Convert.ToUInt64 Convert.ToUInt64 Convert.ToUInt64 Convert.ToUInt64 Method

定義

指定した値を 64 ビット符号なし整数に変換します。Converts a specified value to a 64-bit unsigned integer.

オーバーロード

ToUInt64(String) ToUInt64(String) ToUInt64(String) ToUInt64(String)

指定した数値の文字列形式を等価の 64 ビット符号なし整数に変換します。Converts the specified string representation of a number to an equivalent 64-bit unsigned integer.

ToUInt64(UInt16) ToUInt64(UInt16) ToUInt64(UInt16) ToUInt64(UInt16)

指定した 16 ビット符号なし整数の値を等価の 64 ビット符号なし整数に変換します。Converts the value of the specified 16-bit unsigned integer to the equivalent 64-bit unsigned integer.

ToUInt64(UInt32) ToUInt64(UInt32) ToUInt64(UInt32) ToUInt64(UInt32)

指定した 32 ビット符号なし整数の値を等価の 64 ビット符号なし整数に変換します。Converts the value of the specified 32-bit unsigned integer to an equivalent 64-bit unsigned integer.

ToUInt64(String, Int32) ToUInt64(String, Int32) ToUInt64(String, Int32) ToUInt64(String, Int32)

指定した基数での数値の文字列形式を、等価の 64 ビット符号なし整数に変換します。Converts the string representation of a number in a specified base to an equivalent 64-bit unsigned integer.

ToUInt64(Object, IFormatProvider) ToUInt64(Object, IFormatProvider) ToUInt64(Object, IFormatProvider) ToUInt64(Object, IFormatProvider)

指定したカルチャに固有の書式情報を使用して、指定したオブジェクトの値を 64 ビット符号なし整数に変換します。Converts the value of the specified object to a 64-bit unsigned integer, using the specified culture-specific formatting information.

ToUInt64(String, IFormatProvider) ToUInt64(String, IFormatProvider) ToUInt64(String, IFormatProvider) ToUInt64(String, IFormatProvider)

指定したカルチャに固有の書式情報を使用して、指定した数値の文字列形式を等価の 64 ビット符号なし整数に変換します。Converts the specified string representation of a number to an equivalent 64-bit unsigned integer, using the specified culture-specific formatting information.

ToUInt64(Single) ToUInt64(Single) ToUInt64(Single) ToUInt64(Single)

指定した単精度浮動小数点数値を等価の 64 ビット符号なし整数に変換します。Converts the value of the specified single-precision floating-point number to an equivalent 64-bit unsigned integer.

ToUInt64(UInt64) ToUInt64(UInt64) ToUInt64(UInt64) ToUInt64(UInt64)

指定した 64 ビット符号なし整数が返されます。実際の変換は行われません。Returns the specified 64-bit unsigned integer; no actual conversion is performed.

ToUInt64(SByte) ToUInt64(SByte) ToUInt64(SByte) ToUInt64(SByte)

指定した 8 ビット符号付き整数の値を等価の 64 ビット符号なし整数に変換します。Converts the value of the specified 8-bit signed integer to the equivalent 64-bit unsigned integer.

ToUInt64(Int16) ToUInt64(Int16) ToUInt64(Int16) ToUInt64(Int16)

指定した 16 ビット符号付き整数の値を等価の 64 ビット符号なし整数に変換します。Converts the value of the specified 16-bit signed integer to the equivalent 64-bit unsigned integer.

ToUInt64(Int64) ToUInt64(Int64) ToUInt64(Int64) ToUInt64(Int64)

指定した 64 ビット符号付き整数の値を等価の 64 ビット符号なし整数に変換します。Converts the value of the specified 64-bit signed integer to an equivalent 64-bit unsigned integer.

ToUInt64(Int32) ToUInt64(Int32) ToUInt64(Int32) ToUInt64(Int32)

指定した 32 ビット符号付き整数の値を等価の 64 ビット符号なし整数に変換します。Converts the value of the specified 32-bit signed integer to an equivalent 64-bit unsigned integer.

ToUInt64(Double) ToUInt64(Double) ToUInt64(Double) ToUInt64(Double)

指定した倍精度浮動小数点数値を等価の 64 ビット符号なし整数に変換します。Converts the value of the specified double-precision floating-point number to an equivalent 64-bit unsigned integer.

ToUInt64(Decimal) ToUInt64(Decimal) ToUInt64(Decimal) ToUInt64(Decimal)

指定した 10 進数値を等価の 64 ビット符号なし整数に変換します。Converts the value of the specified decimal number to an equivalent 64-bit unsigned integer.

ToUInt64(DateTime) ToUInt64(DateTime) ToUInt64(DateTime) ToUInt64(DateTime)

このメソッドを呼び出すと、必ず InvalidCastException がスローされます。Calling this method always throws InvalidCastException.

ToUInt64(Char) ToUInt64(Char) ToUInt64(Char) ToUInt64(Char)

指定した Unicode 文字の値を等価の 64 ビット符号なし整数に変換します。Converts the value of the specified Unicode character to the equivalent 64-bit unsigned integer.

ToUInt64(Byte) ToUInt64(Byte) ToUInt64(Byte) ToUInt64(Byte)

指定した 8 ビット符号なし整数の値を等価の 64 ビット符号なし整数に変換します。Converts the value of the specified 8-bit unsigned integer to the equivalent 64-bit unsigned integer.

ToUInt64(Boolean) ToUInt64(Boolean) ToUInt64(Boolean) ToUInt64(Boolean)

指定したブール値を等価の 64 ビット符号なし整数に変換します。Converts the specified Boolean value to the equivalent 64-bit unsigned integer.

ToUInt64(Object) ToUInt64(Object) ToUInt64(Object) ToUInt64(Object)

指定したオブジェクトの値を 64 ビット符号なし整数に変換します。Converts the value of the specified object to a 64-bit unsigned integer.

ToUInt64(String) ToUInt64(String) ToUInt64(String) ToUInt64(String)

重要

この API は CLS 準拠ではありません。

指定した数値の文字列形式を等価の 64 ビット符号なし整数に変換します。Converts the specified string representation of a number to an equivalent 64-bit unsigned integer.

public:
 static System::UInt64 ToUInt64(System::String ^ value);
[System.CLSCompliant(false)]
public static ulong ToUInt64 (string value);
static member ToUInt64 : string -> uint64
Public Shared Function ToUInt64 (value As String) As ULong

パラメーター

value
String String String String

変換する数値を含んだ文字列。A string that contains the number to convert.

戻り値

value の数値と等価の 64 ビット符号付き整数。valuenull の場合は 0 (ゼロ)。A 64-bit signed integer that is equivalent to the number in value, or 0 (zero) if value is null.

例外

value は、オプションの符号とそれに続く数字 (0 ~ 9) のシーケンスで構成されていません。value does not consist of an optional sign followed by a sequence of digits (0 through 9).

valueMinValue 未満の数値か、MaxValue より大きい数値を表します。value represents a number that is less than MinValue or greater than MaxValue.

次の例では、文字列配列の要素を数値文字列として解釈し、それらを符号なし長整数に変換しようとしています。The following example interprets the elements of a string array as numeric strings and attempts to convert them to unsigned long integers.

string[] values = { "One", "1.34e28", "-26.87", "-18", "-6.00",
                    " 0", "137", "1601.9", Int32.MaxValue.ToString() };
ulong result;

foreach (string value in values)
{
   try {
      result = Convert.ToUInt64(value);
      Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.",
                        value.GetType().Name, value, result.GetType().Name, result);
   }
   catch (OverflowException) {
      Console.WriteLine("{0} is outside the range of the UInt64 type.", value);
   }   
   catch (FormatException) {
      Console.WriteLine("The {0} value '{1}' is not in a recognizable format.",
                        value.GetType().Name, value);
   }   
}                                 
// The example displays the following output:
//    The String value 'One' is not in a recognizable format.
//    The String value '1.34e28' is not in a recognizable format.
//    The String value '-26.87' is not in a recognizable format.
//    -18 is outside the range of the UInt64 type.
//    The String value '-6.00' is not in a recognizable format.
//    Converted the String value ' 0' to the UInt64 value 0.
//    Converted the String value '137' to the UInt64 value 137.
//    The String value '1601.9' is not in a recognizable format.
//    Converted the String value '2147483647' to the UInt64 value 2147483647.
Dim values() As String = { "One", "1.34e28", "-26.87", "-18", "-6.00", _
                           " 0", "137", "1601.9", Int32.MaxValue.ToString() }
Dim result As ULong

For Each value As String In values
   Try
      result = Convert.ToUInt64(value)
      Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.", _
                        value.GetType().Name, value, result.GetType().Name, result)
   Catch e As OverflowException
      Console.WriteLine("{0} is outside the range of the UInt64 type.", value)
   Catch e As FormatException
      Console.WriteLine("The {0} value '{1}' is not in a recognizable format.", _
                        value.GetType().Name, value)
   End Try   
Next                                 
' The example displays the following output:
'    The String value 'One' is not in a recognizable format.
'    The String value '1.34e28' is not in a recognizable format.
'    The String value '-26.87' is not in a recognizable format.
'    -18 is outside the range of the UInt64 type.
'    The String value '-6.00' is not in a recognizable format.
'    Converted the String value ' 0' to the UInt64 value 0.
'    Converted the String value '137' to the UInt64 value 137.
'    The String value '1601.9' is not in a recognizable format.
'    Converted the String value '2147483647' to the UInt64 value 2147483647.

注釈

メソッドを使用することは、 value Int64.Parse(String)メソッドに渡すことと同じです。 ToInt64(String)Using the ToInt64(String) method is equivalent to passing value to the Int64.Parse(String) method. value は、現在のスレッド カルチャの書式規則を使用して解釈されます。value is interpreted by using the formatting conventions of the current thread culture.

変換に失敗した場合に例外を処理したくない場合は、代わりにUInt64.TryParseメソッドを呼び出すことができます。If you prefer not to handle an exception if the conversion fails, you can call the UInt64.TryParse method instead. 変換が成功Booleanしたか失敗したかを示す値を返します。It returns a Boolean value that indicates whether the conversion succeeded or failed.

ToUInt64(UInt16) ToUInt64(UInt16) ToUInt64(UInt16) ToUInt64(UInt16)

重要

この API は CLS 準拠ではありません。

指定した 16 ビット符号なし整数の値を等価の 64 ビット符号なし整数に変換します。Converts the value of the specified 16-bit unsigned integer to the equivalent 64-bit unsigned integer.

public:
 static System::UInt64 ToUInt64(System::UInt16 value);
[System.CLSCompliant(false)]
public static ulong ToUInt64 (ushort value);
static member ToUInt64 : uint16 -> uint64
Public Shared Function ToUInt64 (value As UShort) As ULong

パラメーター

value
UInt16 UInt16 UInt16 UInt16

変換する 16 ビット符号なし整数。The 16-bit unsigned integer to convert.

戻り値

value と等価の 64 ビット符号なし整数。A 64-bit unsigned integer that is equivalent to value.

次の例では、符号なし16ビット整数の配列内の各要素を符号なし長整数に変換します。The following example converts each element in an array of unsigned 16-bit integers to an unsigned long integer.

ushort[] numbers = { UInt16.MinValue, 121, 340, UInt16.MaxValue };
ulong result;

foreach (ushort number in numbers)
{
   try {
      result = Convert.ToUInt64(number);
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                        number.GetType().Name, number,
                        result.GetType().Name, result);
   }
   catch (OverflowException) {
      Console.WriteLine("The {0} value {1} is outside the range of the UInt64 type.",
                        number.GetType().Name, number);
   }
}
// The example displays the following output:
//    Converted the UInt16 value 0 to the UInt64 value 0.
//    Converted the UInt16 value 121 to the UInt64 value 121.
//    Converted the UInt16 value 340 to the UInt64 value 340.
//    Converted the UInt16 value 65535 to the UInt64 value 65535.
Dim numbers() As UShort = { UInt16.MinValue, 121, 340, UInt16.MaxValue }
Dim result As ULong

For Each number As UShort In numbers
   result = Convert.ToUInt64(number)
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                     number.GetType().Name, number, _
                     result.GetType().Name, result)
Next
' The example displays the following output:
'    Converted the UInt16 value 0 to the UInt64 value 0.
'    Converted the UInt16 value 121 to the UInt64 value 121.
'    Converted the UInt16 value 340 to the UInt64 value 340.
'    Converted the UInt16 value 65535 to the UInt64 value 65535.

ToUInt64(UInt32) ToUInt64(UInt32) ToUInt64(UInt32) ToUInt64(UInt32)

重要

この API は CLS 準拠ではありません。

指定した 32 ビット符号なし整数の値を等価の 64 ビット符号なし整数に変換します。Converts the value of the specified 32-bit unsigned integer to an equivalent 64-bit unsigned integer.

public:
 static System::UInt64 ToUInt64(System::UInt32 value);
[System.CLSCompliant(false)]
public static ulong ToUInt64 (uint value);
static member ToUInt64 : uint32 -> uint64
Public Shared Function ToUInt64 (value As UInteger) As ULong

パラメーター

value
UInt32 UInt32 UInt32 UInt32

変換する 32 ビット符号なし整数。The 32-bit unsigned integer to convert.

戻り値

value と等価の 64 ビット符号なし整数。A 64-bit unsigned integer that is equivalent to value.

次の例では、符号なし整数配列の各要素を符号なし長整数に変換します。The following example converts each element in an unsigned integer array to an unsigned long integer.

uint[] numbers = { UInt32.MinValue, 121, 340, UInt32.MaxValue };
ulong result;

foreach (uint number in numbers)
{
   try {
      result = Convert.ToUInt64(number);
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                        number.GetType().Name, number,
                        result.GetType().Name, result);
   }
   catch (OverflowException) {
      Console.WriteLine("The {0} value {1} is outside the range of the UInt64 type.",
                        number.GetType().Name, number);
   }
}
// The example displays the following output:
//    Converted the UInt32 value 0 to the UInt64 value 0.
//    Converted the UInt32 value 121 to the UInt64 value 121.
//    Converted the UInt32 value 340 to the UInt64 value 340.
//    Converted the UInt32 value 4294967295 to the UInt64 value 4294967295.
Dim numbers() As UInteger = { UInt32.MinValue, 121, 340, UInt32.MaxValue }
Dim result As ULong

For Each number As UInteger In numbers
   result = Convert.ToUInt64(number)
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                     number.GetType().Name, number, _
                     result.GetType().Name, result)
Next
' The example displays the following output:
'    Converted the UInt32 value 0 to the UInt64 value 0.
'    Converted the UInt32 value 121 to the UInt64 value 121.
'    Converted the UInt32 value 340 to the UInt64 value 340.
'    Converted the UInt32 value 4294967295 to the UInt64 value 4294967295.

ToUInt64(String, Int32) ToUInt64(String, Int32) ToUInt64(String, Int32) ToUInt64(String, Int32)

重要

この API は CLS 準拠ではありません。

指定した基数での数値の文字列形式を、等価の 64 ビット符号なし整数に変換します。Converts the string representation of a number in a specified base to an equivalent 64-bit unsigned integer.

public:
 static System::UInt64 ToUInt64(System::String ^ value, int fromBase);
[System.CLSCompliant(false)]
public static ulong ToUInt64 (string value, int fromBase);
static member ToUInt64 : string * int -> uint64
Public Shared Function ToUInt64 (value As String, fromBase As Integer) As ULong

パラメーター

value
String String String String

変換する数値を含んだ文字列。A string that contains the number to convert.

fromBase
Int32 Int32 Int32 Int32

value 内の数値の基数。これは 2、8、10、または 16 である必要があります。The base of the number in value, which must be 2, 8, 10, or 16.

戻り値

value の数値と等価の 64 ビット符号なし整数。valuenull の場合は 0 (ゼロ)。A 64-bit unsigned integer that is equivalent to the number in value, or 0 (zero) if value is null.

例外

fromBase が 2、8、10、16 のどれでもありません。fromBase is not 2, 8, 10, or 16.

- または --or- value は 10 進法でない符号なし数値を表しますが、前に負の符号が付いています。value, which represents a non-base 10 unsigned number, is prefixed with a negative sign.

value に、fromBase で指定された進法では使用できない数字である文字が含まれています。value contains a character that is not a valid digit in the base specified by fromBase. value 内の最初の文字が正しくない場合は、例外メッセージは、変換する数字がないことを示します。それ以外の場合は、このメッセージは、 value に正しくない末尾文字が含まれていることを示します。The exception message indicates that there are no digits to convert if the first character in value is invalid; otherwise, the message indicates that value contains invalid trailing characters.

valueは 10 進法でない符号なし数値を表しますが、前に負の符号が付いています。value, which represents a non-base 10 unsigned number, is prefixed with a negative sign.

- または --or- valueMinValue 未満の数値か、MaxValue より大きい数値を表します。value represents a number that is less than MinValue or greater than MaxValue.

次の例では、数値文字列の配列内の各要素を16進値として解釈し、符号なし長整数に変換しようとしています。The following example attempts to interpret each element in an array of numeric strings as a hexadecimal value and to convert it to an unsigned long integer.

using System;

public class Example
{
   public static void Main()
   {
      string[] hexStrings = { "8000000000000000", "0FFFFFFFFFFFFFFF",
                              "F000000000000000", "00A3000000000000",
                              "D", "-13", "9AC61", "GAD",
                              "FFFFFFFFFFFFFFFFF" };
      
      foreach (string hexString in hexStrings)
      {
         Console.Write("{0,-18}  -->  ", hexString);
         try {
            ulong number = Convert.ToUInt64(hexString, 16);
            Console.WriteLine("{0,26:N0}", number);
         }   
         catch (FormatException) {
            Console.WriteLine("{0,26}", "Bad Format");
         }   
         catch (OverflowException) {
            Console.WriteLine("{0,26}", "Numeric Overflow");
         }   
         catch (ArgumentException) {
            Console.WriteLine("{0,26}", "Invalid in Base 16");
         }
      }                                            
   }
}
// The example displays the following output:
//    8000000000000000    -->   9,223,372,036,854,775,808
//    0FFFFFFFFFFFFFFF    -->   1,152,921,504,606,846,975
//    F000000000000000    -->  17,293,822,569,102,704,640
//    00A3000000000000    -->      45,880,421,203,836,928
//    D                   -->                          13
//    -13                 -->          Invalid in Base 16
//    9AC61               -->                     633,953
//    GAD                 -->                  Bad Format
//    FFFFFFFFFFFFFFFFF   -->            Numeric Overflow
Module Example
   Public Sub Main()
      Dim hexStrings() As String = { "8000000000000000", "0FFFFFFFFFFFFFFF", _
                                     "F000000000000000", "00A3000000000000", _
                                     "D", "-13", "9AC61", "GAD", _
                                     "FFFFFFFFFFFFFFFFF" }
      For Each hexString As String In hexStrings
         Console.Write("{0,-18}  -->  ", hexString)
         Try
            Dim number As ULong = Convert.ToUInt64(hexString, 16)
            Console.WriteLine("{0,26:N0}", number)
         Catch e As FormatException
            Console.WriteLine("{0,26}", "Bad Format")
         Catch e As OverflowException
            Console.WriteLine("{0,26}", "Numeric Overflow")
         Catch e As ArgumentException
            Console.WriteLine("{0,26}", "Invalid in Base 16")
         End Try
      Next                                            
   End Sub
End Module
' The example displays the following output:
'    8000000000000000    -->   9,223,372,036,854,775,808
'    0FFFFFFFFFFFFFFF    -->   1,152,921,504,606,846,975
'    F000000000000000    -->  17,293,822,569,102,704,640
'    00A3000000000000    -->      45,880,421,203,836,928
'    D                   -->                          13
'    -13                 -->          Invalid in Base 16
'    9AC61               -->                     633,953
'    GAD                 -->                  Bad Format
'    FFFFFFFFFFFFFFFFF   -->            Numeric Overflow

注釈

fromBase 16 の場合は、 valueパラメーターで指定された数値の先頭に "0x" または "0x" を付けることができます。If fromBase is 16, you can prefix the number specified by the value parameter with "0x" or "0X".

データ型UInt64は符号なしの値のみをサポートToUInt64(String, Int32)するため、 valueメソッドは、が符号なしのバイナリ表現を使用して表現されることを前提としています。Because the UInt64 data type supports unsigned values only, the ToUInt64(String, Int32) method assumes that value is expressed using unsigned binary representation. つまり、64ビットはすべて、数値を表すために使用され、符号ビットは存在しません。In other words, all 64 bits are used to represent the numeric value, and a sign bit is absent. その結果、メソッドが例外をスローすることなく、 UInt64データ型の範囲外にある符号付き長整数値がUInt64値に変換されるコードを記述することができます。As a result, it is possible to write code in which a signed long integer value that is out of the range of the UInt64 data type is converted to a UInt64 value without the method throwing an exception. 次の例でMinValueは、を16進数の文字列形式に変換ToUInt64(String, Int32)してから、メソッドを呼び出します。The following example converts MinValue to its hexadecimal string representation, and then calls the ToUInt64(String, Int32) method. メソッドでは、例外をスローする代わりに、"0x8000000000000000 から9223372036854775808に変換" というメッセージが表示されます。Instead of throwing an exception, the method displays the message, "0x8000000000000000 converts to 9223372036854775808."

// Create a hexadecimal value out of range of the UInt64 type.
string value = Convert.ToString(Int64.MinValue, 16);
// Convert it back to a number.
try
{
   UInt64 number = Convert.ToUInt64(value, 16);
   Console.WriteLine("0x{0} converts to {1}.", value, number);
}   
catch (OverflowException)
{
   Console.WriteLine("Unable to convert '0x{0}' to an unsigned long integer.", 
                     value);
}   
' Create a hexadecimal value out of range of the UInt64 type.
Dim value As String = Convert.ToString(Long.MinValue, 16)
' Convert it back to a number.
Try
   Dim number As UInt64 = Convert.ToUInt64(value, 16)
   Console.WriteLine("0x{0} converts to {1}.", value, number)
Catch e As OverflowException
   Console.WriteLine("Unable to convert '0x{0}' to an unsigned long integer.", _
                     value)
End Try   

バイナリ演算または数値変換を実行する場合、メソッドまたは演算子が特定の値を解釈するために適切な数値表現を使用しているかどうかを確認するのは常に開発者の責任です。When performing binary operations or numeric conversions, it is always the responsibility of the developer to verify that a method or operator is using the appropriate numeric representation to interpret a particular value. 次の例は、16進数文字列をUInt64値に変換するときに、メソッドがバイナリ表現を不適切に使用して、2つの補数表現を使用する値を解釈しないようにするための1つの方法を示しています。The following example illustrates one technique for ensuring that the method does not inappropriately use binary representation to interpret a value that uses two's complement representation when converting a hexadecimal string to a UInt64 value. この例では、値がその値を文字列形式に変換している間に、符号付き整数または符号なし整数を表すかどうかを判断します。The example determines whether a value represents a signed or an unsigned integer while it is converting that value to its string representation. この例で値をUInt64値に変換すると、元の値が符号付き整数であるかどうかがチェックされます。When the example converts the value to a UInt64 value, it checks whether the original value was a signed integer. その場合、上位ビットが設定されている (元の値が負の値であることを示す) 場合、メソッドは例外をスローします。If so, and if its high-order bit is set (which indicates that the original value was negative), the method throws an exception.

// Create a negative hexadecimal value out of range of the UInt64 type.
long sourceNumber = Int64.MinValue;
bool isSigned = Math.Sign((long)sourceNumber.GetType().GetField("MinValue").GetValue(null)) == -1;
string value = Convert.ToString(sourceNumber, 16);
UInt64 targetNumber;
try
{
   targetNumber = Convert.ToUInt64(value, 16);
   if (isSigned && ((targetNumber & 0x8000000000000000) != 0))
      throw new OverflowException();
   else 
      Console.WriteLine("0x{0} converts to {1}.", value, targetNumber);
}
catch (OverflowException)
{
   Console.WriteLine("Unable to convert '0x{0}' to an unsigned long integer.", 
                     value);
} 
// Displays the following to the console:
//    Unable to convert '0x8000000000000000' to an unsigned long integer.     
' Create a negative hexadecimal value out of range of the UInt64 type.
Dim sourceNumber As Long = Long.MinValue
Dim isSigned As Boolean = Math.Sign(sourceNumber.MinValue) = -1
Dim value As String = Convert.ToString(sourceNumber, 16)
Dim targetNumber As UInt64
Try
   targetNumber = Convert.ToUInt64(value, 16)
   If isSigned And ((targetNumber And &H8000000000000000ul) <> 0) Then
      Throw New OverflowException()
   Else 
      Console.WriteLine("0x{0} converts to {1}.", value, targetNumber)
   End If    
Catch e As OverflowException
   Console.WriteLine("Unable to convert '0x{0}' to an unsigned long integer.", _
                     value)
End Try 
' Displays the following to the console:
'    Unable to convert '0x8000' to an unsigned long integer.     

ToUInt64(Object, IFormatProvider) ToUInt64(Object, IFormatProvider) ToUInt64(Object, IFormatProvider) ToUInt64(Object, IFormatProvider)

重要

この API は CLS 準拠ではありません。

指定したカルチャに固有の書式情報を使用して、指定したオブジェクトの値を 64 ビット符号なし整数に変換します。Converts the value of the specified object to a 64-bit unsigned integer, using the specified culture-specific formatting information.

public:
 static System::UInt64 ToUInt64(System::Object ^ value, IFormatProvider ^ provider);
[System.CLSCompliant(false)]
public static ulong ToUInt64 (object value, IFormatProvider provider);
static member ToUInt64 : obj * IFormatProvider -> uint64
Public Shared Function ToUInt64 (value As Object, provider As IFormatProvider) As ULong

パラメーター

value
Object Object Object Object

IConvertible インターフェイスを実装するオブジェクト。An object that implements the IConvertible interface.

provider
IFormatProvider IFormatProvider IFormatProvider IFormatProvider

カルチャ固有の書式情報を提供するオブジェクト。An object that supplies culture-specific formatting information.

戻り値

value と等価の 64 ビット符号なし整数。valuenull の場合は 0。A 64-bit unsigned integer that is equivalent to value, or zero if value is null.

例外

value が適切な形式ではありません。value is not in an appropriate format.

valueIConvertible インターフェイスを実装していません。value does not implement the IConvertible interface.

または-or- この変換はサポートされていません。The conversion is not supported.

valueMinValue 未満の数値か、MaxValue より大きい数値を表します。value represents a number that is less than MinValue or greater than MaxValue.

次の例ではHexStringIConvertibleインターフェイスを実装するクラスを定義しています。このクラスは、64ビットの符号なしの値と64ビットの符号なしの値の両方の文字列形式を保持するように設計されています。The following example defines a HexString class that implements the IConvertible interface and that is designed to hold the string representation of both 64-bit signed and 64-bit unsigned values. クラスには、 Sign 16 進値の符号を示すプロパティが含まれています。The class includes a Sign property that indicates the sign of its hexadecimal value.

using System;
using System.Globalization;
using System.Text.RegularExpressions;

public enum SignBit { Negative=-1, Zero=0, Positive=1 };

public struct HexString : IConvertible
{
   private SignBit signBit;
   private string hexString;
   
   public SignBit Sign
   {
      set { signBit = value; }
      get { return signBit; }
   }
   
   public string Value
   {
      set 
      { 
         if (value.Trim().Length > 16)
            throw new ArgumentException("The hexadecimal representation of a 64-bit integer cannot have more than 16 characters.");
         else if (! Regex.IsMatch(value, "([0-9,A-F]){1,8}", RegexOptions.IgnoreCase))
            throw new ArgumentException("The hexadecimal representation of a 64-bit integer contains invalid characters.");             
         else
            hexString = value;
      } 
      get { return hexString; }
   }
   
   // IConvertible implementations.
   public TypeCode GetTypeCode() 
   {
      return TypeCode.Object;
   }
   
   public bool ToBoolean(IFormatProvider provider)
   {
      return signBit != SignBit.Zero;
   } 
   
   public byte ToByte(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         throw new OverflowException(String.Format("{0} is out of range of the Byte type.", Convert.ToInt64(hexString, 16))); 
      else
         try {
            return Byte.Parse(hexString, NumberStyles.HexNumber);
         }   
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is out of range of the Byte type.", Convert.ToUInt64(hexString, 16)), e);
         }   
   }
   
   public char ToChar(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative) 
         throw new OverflowException(String.Format("{0} is out of range of the Char type.", Convert.ToInt64(hexString, 16)));
      
      try {
         ushort codePoint = UInt16.Parse(this.hexString, NumberStyles.HexNumber);
         return Convert.ToChar(codePoint);
      }   
      catch (OverflowException) {
         throw new OverflowException(String.Format("{0} is out of range of the Char type.", Convert.ToUInt64(hexString, 16)));
      }      
   } 
   
   public DateTime ToDateTime(IFormatProvider provider)
   {
      throw new InvalidCastException("Hexadecimal to DateTime conversion is not supported.");
   }
   
   public decimal ToDecimal(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
      {
         long hexValue = Int64.Parse(hexString, NumberStyles.HexNumber);
         return Convert.ToDecimal(hexValue);
      }   
      else
      {
         ulong hexValue = UInt64.Parse(hexString, NumberStyles.HexNumber);
         return Convert.ToDecimal(hexValue);
      }
   }
   
   public double ToDouble(IFormatProvider provider) 
   {
      if (signBit == SignBit.Negative)
         return Convert.ToDouble(Int64.Parse(hexString, NumberStyles.HexNumber));
      else
         return Convert.ToDouble(UInt64.Parse(hexString, NumberStyles.HexNumber));
   }   
   
   public short ToInt16(IFormatProvider provider) 
   {
      if (signBit == SignBit.Negative)
         try {
            return Convert.ToInt16(Int64.Parse(hexString, NumberStyles.HexNumber));
         }   
         catch (OverflowException e) { 
            throw new OverflowException(String.Format("{0} is out of range of the Int16 type.", Convert.ToInt64(hexString, 16)), e);
         }
      else
         try {
            return Convert.ToInt16(UInt64.Parse(hexString, NumberStyles.HexNumber));
         }
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is out of range of the Int16 type.", Convert.ToUInt64(hexString, 16)), e);
         }
   }
   
   public int ToInt32(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         try {
            return Convert.ToInt32(Int64.Parse(hexString, NumberStyles.HexNumber));
         }
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is out of range of the Int32 type.", Convert.ToUInt64(hexString, 16)), e);
         }   
      else
         try {
            return Convert.ToInt32(UInt64.Parse(hexString, NumberStyles.HexNumber));
         }   
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is out of range of the Int32 type.", Convert.ToUInt64(hexString, 16)), e);
         }   
   }
   
   public long ToInt64(IFormatProvider provider) 
   {
      if (signBit == SignBit.Negative)
         return Int64.Parse(hexString, NumberStyles.HexNumber);
      else
         try {
            return Convert.ToInt64(UInt64.Parse(hexString, NumberStyles.HexNumber));
         }   
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is out of range of the Int64 type.", Convert.ToUInt64(hexString, 16)), e);
         }
   }
   
   public sbyte ToSByte(IFormatProvider provider) 
   {
      if (signBit == SignBit.Negative)
         try {
            return Convert.ToSByte(Int64.Parse(hexString, NumberStyles.HexNumber));
         }   
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is outside the range of the SByte type.", 
                                                      Int64.Parse(hexString, NumberStyles.HexNumber), e));
         }
      else
         try {
            return Convert.ToSByte(UInt64.Parse(hexString, NumberStyles.HexNumber));
         }   
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is outside the range of the SByte type.", 
                                                    UInt64.Parse(hexString, NumberStyles.HexNumber)), e);
         }   
   }

   public float ToSingle(IFormatProvider provider) 
   {
      if (signBit == SignBit.Negative)
         return Convert.ToSingle(Int64.Parse(hexString, NumberStyles.HexNumber));
      else
         return Convert.ToSingle(UInt64.Parse(hexString, NumberStyles.HexNumber));
   }

   public string ToString(IFormatProvider provider)
   {
      return "0x" + this.hexString;
   }
   
   public object ToType(Type conversionType, IFormatProvider provider)
   {
      switch (Type.GetTypeCode(conversionType))
      {
         case TypeCode.Boolean: 
            return this.ToBoolean(null);
         case TypeCode.Byte:
            return this.ToByte(null);
         case TypeCode.Char:
            return this.ToChar(null);
         case TypeCode.DateTime:
            return this.ToDateTime(null);
         case TypeCode.Decimal:
            return this.ToDecimal(null);
         case TypeCode.Double:
            return this.ToDouble(null);
         case TypeCode.Int16:
            return this.ToInt16(null);
         case TypeCode.Int32:
            return this.ToInt32(null);
         case TypeCode.Int64:
            return this.ToInt64(null);
         case TypeCode.Object:
            if (typeof(HexString).Equals(conversionType))
               return this;
            else
               throw new InvalidCastException(String.Format("Conversion to a {0} is not supported.", conversionType.Name));
         case TypeCode.SByte:
            return this.ToSByte(null);
         case TypeCode.Single:
            return this.ToSingle(null);
         case TypeCode.String:
            return this.ToString(null);
         case TypeCode.UInt16:
            return this.ToUInt16(null);
         case TypeCode.UInt32:
            return this.ToUInt32(null);
         case TypeCode.UInt64:
            return this.ToUInt64(null);   
         default:
            throw new InvalidCastException(String.Format("Conversion to {0} is not supported.", conversionType.Name));   
      }
   }
   
   public ushort ToUInt16(IFormatProvider provider) 
   {
      if (signBit == SignBit.Negative)
         throw new OverflowException(String.Format("{0} is outside the range of the UInt16 type.", 
                                                   Int64.Parse(hexString, NumberStyles.HexNumber)));
      else
         try {
            return Convert.ToUInt16(UInt64.Parse(hexString, NumberStyles.HexNumber));
         }
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is out of range of the UInt16 type.", Convert.ToUInt64(hexString, 16)), e);
         }            
   }

   public uint ToUInt32(IFormatProvider provider) 
   {
      if (signBit == SignBit.Negative)
         throw new OverflowException(String.Format("{0} is outside the range of the UInt32 type.", 
                                                   Int64.Parse(hexString, NumberStyles.HexNumber)));
      else
         try {
            return Convert.ToUInt32(UInt64.Parse(hexString, NumberStyles.HexNumber));
         }
         catch (OverflowException) {
            throw new OverflowException(String.Format("{0} is outside the range of the UInt32 type.", 
                                                      UInt64.Parse(hexString, NumberStyles.HexNumber)));
         }   
   }
   
   public ulong ToUInt64(IFormatProvider provider) 
   {
      if (signBit == SignBit.Negative)
         throw new OverflowException(String.Format("{0} is outside the range of the UInt64 type.", 
                                                   Int64.Parse(hexString, NumberStyles.HexNumber)));
      else
         return Convert.ToUInt64(hexString, 16);
   }
}
Imports System.Globalization
Imports System.Text.RegularExpressions

Public Enum SignBit As Integer
   Positive = 1
   Zero = 0
   Negative = -1
End Enum

Public Structure HexString : Implements IConvertible
   Private signBit As SignBit
   Private hexString As String
   
   Public Property Sign As SignBit
      Set
         signBit = value
      End Set
      Get
         Return signBit
      End Get
   End Property
   
   Public Property Value As String
      Set
         If value.Trim().Length > 16 Then
            Throw New ArgumentException("The hexadecimal representation of a 64-bit integer cannot have more than 16 characters.")
         ElseIf Not Regex.IsMatch(value, "([0-9,A-F]){1,8}", RegexOptions.IgnoreCase) Then
            Throw New ArgumentException("The hexadecimal representation of a 64-bit integer contains invalid characters.")             
         Else
            hexString = value
         End If   
      End Set
      Get
         Return hexString
      End Get
   End Property
   
   ' IConvertible implementations.
   Public Function GetTypeCode() As TypeCode _
                   Implements IConvertible.GetTypeCode
      Return TypeCode.Object
   End Function
   
   Public Function ToBoolean(provider As IFormatProvider) As Boolean _
                   Implements IConvertible.ToBoolean
      Return signBit <> SignBit.Zero
   End Function 
   
   Public Function ToByte(provider As IFormatProvider) As Byte _
                   Implements IConvertible.ToByte
      If signBit = SignBit.Negative Then
         Throw New OverflowException(String.Format("{0} is out of range of the Byte type.", Convert.ToInt64(hexString, 16))) 
      Else
         Try
            Return Byte.Parse(hexString, NumberStyles.HexNumber)
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is out of range of the Byte type.", Convert.ToUInt64(hexString, 16)), e)
         End Try   
      End If       
   End Function
   
   Public Function ToChar(provider As IFormatProvider) As Char _
                   Implements IConvertible.ToChar
      If signBit = SignBit.Negative Then 
         Throw New OverflowException(String.Format("{0} is out of range of the Char type.", Convert.ToInt64(hexString, 16)))
      End If
      
      Try
         Dim codePoint As UInt16 = UInt16.Parse(Me.hexString, NumberStyles.HexNumber)
         Return Convert.ToChar(codePoint)
      Catch e As OverflowException
         Throw New OverflowException(String.Format("{0} is out of range of the Char type.", Convert.ToUInt64(hexString, 16)))
      End Try      
   End Function 
   
   Public Function ToDateTime(provider As IFormatProvider) As Date _
                   Implements IConvertible.ToDateTime
      Throw New InvalidCastException("Hexadecimal to DateTime conversion is not supported.")
   End Function
   
   Public Function ToDecimal(provider As IFormatProvider) As Decimal _
                   Implements IConvertible.ToDecimal
      If signBit = SignBit.Negative Then
         Dim hexValue As Long = Int64.Parse(hexString, NumberStyles.HexNumber)
         Return Convert.ToDecimal(hexValue)
      Else
         Dim hexValue As ULong = UInt64.Parse(hexString, NumberStyles.HexNumber)
         Return Convert.ToDecimal(hexValue)
      End If
   End Function
   
   Public Function ToDouble(provider As IFormatProvider) As Double _
                   Implements IConvertible.ToDouble
      If signBit = SignBit.Negative Then
         Return Convert.ToDouble(Int64.Parse(hexString, NumberStyles.HexNumber))
      Else
         Return Convert.ToDouble(UInt64.Parse(hexString, NumberStyles.HexNumber))
      End If   
   End Function   
   
   Public Function ToInt16(provider As IFormatProvider) As Int16 _
                   Implements IConvertible.ToInt16
      If signBit = SignBit.Negative Then
         Try
            Return Convert.ToInt16(Int64.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is out of range of the Int16 type.", Convert.ToInt64(hexString, 16)), e)
         End Try
      Else
         Try
            Return Convert.ToInt16(UInt64.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is out of range of the Int16 type.", Convert.ToUInt64(hexString, 16)), e)
         End Try
      End If   
   End Function
   
   Public Function ToInt32(provider As IFormatProvider) As Int32 _
                   Implements IConvertible.ToInt32
      If signBit = SignBit.Negative Then
         Try
            Return Convert.ToInt32(Int64.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is out of range of the Int32 type.", Convert.ToUInt64(hexString, 16)), e)
         End Try
      Else
         Try
            Return Convert.ToInt32(UInt64.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is out of range of the Int32 type.", Convert.ToUInt64(hexString, 16)), e)
         End Try   
      End If   
   End Function
   
   Public Function ToInt64(provider As IFormatProvider) As Int64 _
                   Implements IConvertible.ToInt64
      If signBit = SignBit.Negative Then
         Return Int64.Parse(hexString, NumberStyles.HexNumber)
      Else
         Try
            Return Convert.ToInt64(UInt64.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is out of range of the Int64 type.", Convert.ToUInt64(hexString, 16)), e)
         End Try
      End If   
   End Function
   
   Public Function ToSByte(provider As IFormatProvider) As SByte _
                   Implements IConvertible.ToSByte
      If signBit = SignBit.Negative Then
         Try
            Return Convert.ToSByte(Int64.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is outside the range of the SByte type.", _
                                                      Int64.Parse(hexString, NumberStyles.HexNumber), e))
         End Try
      Else
         Try
            Return Convert.ToSByte(UInt64.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is outside the range of the SByte type.", _
                                                    UInt64.Parse(hexString, NumberStyles.HexNumber)), e)
         End Try   
      End If
   End Function

   Public Function ToSingle(provider As IFormatProvider) As Single _
                   Implements IConvertible.ToSingle
      If signBit = SignBit.Negative Then
         Return Convert.ToSingle(Int64.Parse(hexString, NumberStyles.HexNumber))
      Else
         Return Convert.ToSingle(UInt64.Parse(hexString, NumberStyles.HexNumber))
      End If   
   End Function

   Public Overloads Function ToString(provider As IFormatProvider) As String _
                   Implements IConvertible.ToString
      Return "0x" & Me.hexString
   End Function
   
   Public Function ToType(conversionType As Type, provider As IFormatProvider) As Object _
                   Implements IConvertible.ToType
      Select Case Type.GetTypeCode(conversionType)
         Case TypeCode.Boolean 
            Return Me.ToBoolean(Nothing)
         Case TypeCode.Byte
            Return Me.ToByte(Nothing)
         Case TypeCode.Char
            Return Me.ToChar(Nothing)
         Case TypeCode.DateTime
            Return Me.ToDateTime(Nothing)
         Case TypeCode.Decimal
            Return Me.ToDecimal(Nothing)
         Case TypeCode.Double
            Return Me.ToDouble(Nothing)
         Case TypeCode.Int16
            Return Me.ToInt16(Nothing)
         Case TypeCode.Int32
            Return Me.ToInt32(Nothing)
         Case TypeCode.Int64
            Return Me.ToInt64(Nothing)
         Case TypeCode.Object
            If GetType(HexString).Equals(conversionType) Then
               Return Me
            Else
               Throw New InvalidCastException(String.Format("Conversion to a {0} is not supported.", conversionType.Name))
            End If 
         Case TypeCode.SByte
            Return Me.ToSByte(Nothing)
         Case TypeCode.Single
            Return Me.ToSingle(Nothing)
         Case TypeCode.String
            Return Me.ToString(Nothing)
         Case TypeCode.UInt16
            Return Me.ToUInt16(Nothing)
         Case TypeCode.UInt32
            Return Me.ToUInt32(Nothing)
         Case TypeCode.UInt64
            Return Me.ToUInt64(Nothing)   
         Case Else
            Throw New InvalidCastException(String.Format("Conversion to {0} is not supported.", conversionType.Name))   
      End Select
   End Function
   
   Public Function ToUInt16(provider As IFormatProvider) As UInt16 _
                   Implements IConvertible.ToUInt16
      If signBit = SignBit.Negative Then
         Throw New OverflowException(String.Format("{0} is outside the range of the UInt16 type.", _
                                                   Int64.Parse(hexString, NumberStyles.HexNumber)))
      Else
         Try
            Return Convert.ToUInt16(UInt64.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is out of range of the UInt16 type.", Convert.ToUInt64(hexString, 16)), e)
         End Try            
      End If   
   End Function

   Public Function ToUInt32(provider As IFormatProvider) As UInt32 _
                   Implements IConvertible.ToUInt32
      If signBit = SignBit.Negative Then
         Throw New OverflowException(String.Format("{0} is outside the range of the UInt32 type.", _
                                                   Int64.Parse(hexString, NumberStyles.HexNumber)))
      Else
         Try
            Return Convert.ToUInt32(UInt64.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
         Throw New OverflowException(String.Format("{0} is outside the range of the UInt32 type.", _
                                                   UInt64.Parse(hexString, NumberStyles.HexNumber)))
         End Try   
      End If   
   End Function
   
   Public Function ToUInt64(provider As IFormatProvider) As UInt64 _
                   Implements IConvertible.ToUInt64
      If signBit = SignBit.Negative Then
         Throw New OverflowException(String.Format("{0} is outside the range of the UInt64 type.", _
                                                   Int64.Parse(hexString, NumberStyles.HexNumber)))
      Else
         Return Convert.ToUInt64(hexString, 16)
      End If   
   End Function
End Structure

次のToUInt64(Object, IFormatProvider)例では、 HexStringオブジェクトをパラメーターとして渡すメソッドを呼び出すと、 HexStringクラスの実装がIConvertible.ToUInt64呼び出されることを示しています。The following example shows that a call to the ToUInt64(Object, IFormatProvider) method that passes a HexString object as a parameter, in turn, calls the IConvertible.ToUInt64 implementation of the HexString class.

public class Example
{
   public static void Main()
   {
      ulong positiveValue = UInt64.MaxValue - 100000;
      long negativeValue = -1;
      
      
      HexString positiveString = new HexString();
      positiveString.Sign = (SignBit) Math.Sign((decimal)positiveValue);
      positiveString.Value = positiveValue.ToString("X");
      
      HexString negativeString = new HexString();
      negativeString.Sign = (SignBit) Math.Sign(negativeValue);
      negativeString.Value = negativeValue.ToString("X");
      
      try {
         Console.WriteLine("0x{0} converts to {1}.", positiveString.Value, Convert.ToUInt64(positiveString));
      }
      catch (OverflowException) {
         Console.WriteLine("{0} is outside the range of the UInt64 type.", 
                           Int64.Parse(positiveString.Value, NumberStyles.HexNumber));
      }                     

      try {
         Console.WriteLine("0x{0} converts to {1}.", negativeString.Value, Convert.ToUInt64(negativeString));
      }   
      catch (OverflowException) {
         Console.WriteLine("{0} is outside the range of the UInt64 type.", 
                           Int64.Parse(negativeString.Value, NumberStyles.HexNumber));
      }                           
   }
}
// The example displays the following output:
//       0xFFFFFFFFFFFE795F converts to 18446744073709451615.
//       -1 is outside the range of the UInt64 type.
Module Example
   Public Sub Main()
      Dim positiveValue As UInt64 = CULng(UInt64.MaxValue - 100000)
      Dim negativeValue As Int64 = -1
      
      
      Dim positiveString As New HexString()
      positiveString.Sign = CType(Math.Sign(positiveValue), SignBit)
      positiveString.Value = positiveValue.ToString("X")
      
      Dim negativeString As New HexString()
      negativeString.Sign = CType(Math.Sign(negativeValue), SignBit)
      negativeString.Value = negativeValue.ToString("X")
      
      Try
         Console.WriteLine("0x{0} converts to {1}.", positiveString.Value, Convert.ToUInt64(positiveString))
      Catch e As OverflowException
         Console.WriteLine("{0} is outside the range of the UInt64 type.", _
                           Int64.Parse(positiveString.Value, NumberStyles.HexNumber))
      End Try

      Try
         Console.WriteLine("0x{0} converts to {1}.", negativeString.Value, Convert.ToUInt64(negativeString))
      Catch e As OverflowException
         Console.WriteLine("{0} is outside the range of the UInt64 type.", _
                           Int64.Parse(negativeString.Value, NumberStyles.HexNumber))
      End Try   
   End Sub
End Module
' The example dosplays the following output:
'       0xFFFFFFFFFFFE795F converts to 18446744073709451615.
'       -1 is outside the range of the UInt64 type.

注釈

戻り値は、のIConvertible.ToUInt64 value基になる型のメソッドを呼び出した結果です。The return value is the result of invoking the IConvertible.ToUInt64 method of the underlying type of value.

providerユーザーがのvalueコンテンツに関するカルチャ固有の変換情報を指定できるようにします。provider enables the user to specify culture-specific conversion information about the contents of value. たとえば、 value Stringが数値providerを表すである場合、はその数値を表すために使用される表記法に関するカルチャ固有の情報を提供できます。For example, if value is a String that represents a number, provider could supply culture-specific information about the notation used to represent that number.

基本型ではprovider無視されます。ただし、がIConvertibleインターフェイスvalueを実装するユーザー定義型である場合は、パラメーターを使用できます。The base types ignore provider; however, the parameter may be used if value is a user-defined type that implements the IConvertible interface.

ToUInt64(String, IFormatProvider) ToUInt64(String, IFormatProvider) ToUInt64(String, IFormatProvider) ToUInt64(String, IFormatProvider)

重要

この API は CLS 準拠ではありません。

指定したカルチャに固有の書式情報を使用して、指定した数値の文字列形式を等価の 64 ビット符号なし整数に変換します。Converts the specified string representation of a number to an equivalent 64-bit unsigned integer, using the specified culture-specific formatting information.

public:
 static System::UInt64 ToUInt64(System::String ^ value, IFormatProvider ^ provider);
[System.CLSCompliant(false)]
public static ulong ToUInt64 (string value, IFormatProvider provider);
static member ToUInt64 : string * IFormatProvider -> uint64
Public Shared Function ToUInt64 (value As String, provider As IFormatProvider) As ULong

パラメーター

value
String String String String

変換する数値を含んだ文字列。A string that contains the number to convert.

provider
IFormatProvider IFormatProvider IFormatProvider IFormatProvider

カルチャ固有の書式情報を提供するオブジェクト。An object that supplies culture-specific formatting information.

戻り値

value の数値と等価の 64 ビット符号なし整数。valuenull の場合は 0 (ゼロ)。A 64-bit unsigned integer that is equivalent to the number in value, or 0 (zero) if value is null.

例外

value は、オプションの符号とそれに続く数字 (0 ~ 9) のシーケンスで構成されていません。value does not consist of an optional sign followed by a sequence of digits (0 through 9).

valueMinValue 未満の数値か、MaxValue より大きい数値を表します。value represents a number that is less than MinValue or greater than MaxValue.

次の例では、 NumberFormatInfo文字列 "pos" を正符号として認識し、文字列 "neg" を負の符号として認識するカスタムオブジェクトを定義します。The following example defines a custom NumberFormatInfo object that recognizes the string "pos" as the positive sign and the string "neg" as the negative sign. 次に、数値文字列配列の各要素を符号なし長整数に変換しようとします。It then attempts to convert each element of a numeric string array to an unsigned long integer. 変換では、インバリアントカルチャに対しNumberFormatInfoてカスタムプロバイダーとプロバイダーの両方が使用されます。The conversion uses both the custom provider and the NumberFormatInfo provider for the invariant culture.

using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      // Create a NumberFormatInfo object and set several properties.
      NumberFormatInfo provider = new NumberFormatInfo();
      provider.PositiveSign = "pos ";
      provider.NegativeSign = "neg ";

      // Define an array of numeric strings.
      string[] values = { "123456789012", "+123456789012",
                          "pos 123456789012", "123456789012.",
                          "123,456,789,012", "18446744073709551615",
                          "18446744073709551616", "neg 1", "-1" };
      //  Convert the strings using the format provider.
      foreach (string value in values)
      {
         Console.Write("{0,-20}  -->  ", value);
         try {
            Console.WriteLine("{0,20}", Convert.ToUInt64(value, provider));
         }
         catch (FormatException) {
            Console.WriteLine("{0,20}", "Invalid Format");
         }   
         catch (OverflowException) {
            Console.WriteLine("{0,20}", "Numeric Overflow");
         }               
      }
   }
}
// The example displays the following output:
//    123456789012          -->          123456789012
//    +123456789012         -->        Invalid Format
//    pos 123456789012      -->          123456789012
//    123456789012.         -->        Invalid Format
//    123,456,789,012       -->        Invalid Format
//    18446744073709551615  -->  18446744073709551615
//    18446744073709551616  -->      Numeric Overflow
//    neg 1                 -->      Numeric Overflow
//    -1                    -->        Invalid Format
Imports System.Globalization

Module Example
   Public Sub Main()
      ' Create a NumberFormatInfo object and set several properties.
      Dim provider As New NumberFormatInfo()
      provider.PositiveSign = "pos "
      provider.NegativeSign = "neg "

      ' Define an array of numeric strings.
      Dim values() As String = { "123456789012", "+123456789012", _
                                 "pos 123456789012", "123456789012.", _
                                 "123,456,789,012", "18446744073709551615", _
                                 "18446744073709551616", "neg 1", "-1" }
      '  Convert the strings using the format provider.
      For Each value As String In values
         Console.Write("{0,-20}  -->  ", value)
         Try
            Console.WriteLine("{0,20}", Convert.ToUInt64(value, provider))
         Catch e As FormatException
            Console.WriteLine("{0,20}", "Invalid Format")
         Catch e As OverflowException
            Console.WriteLine("{0,20}", "Numeric Overflow")
         End Try               
      Next
    End Sub 
End Module 
' The example displays the following output:
'    123456789012          -->          123456789012
'    +123456789012         -->        Invalid Format
'    pos 123456789012      -->          123456789012
'    123456789012.         -->        Invalid Format
'    123,456,789,012       -->        Invalid Format
'    18446744073709551615  -->  18446744073709551615
'    18446744073709551616  -->      Numeric Overflow
'    neg 1                 -->      Numeric Overflow
'    -1                    -->        Invalid Format

注釈

戻り値は、でをUInt64.Parse value呼び出した結果です。The return value is the result of invoking UInt64.Parse on value.

providerは、オブジェクトをNumberFormatInfo取得する実装です。IFormatProviderprovider is an IFormatProvider implementation that obtains a NumberFormatInfo object. オブジェクトNumberFormatInfoは、の書式に関するカルチャ固有のvalue情報を提供します。The NumberFormatInfo object provides culture-specific information about the format of value. NumberFormatInfoprovider の場合は、現在のカルチャのオブジェクトが使用されます。nullIf provider is null, the NumberFormatInfo object for the current culture is used.

変換に失敗した場合に例外を処理したくない場合は、代わりにUInt64.TryParseメソッドを呼び出すことができます。If you prefer not to handle an exception if the conversion fails, you can call the UInt64.TryParse method instead. 変換が成功Booleanしたか失敗したかを示す値を返します。It returns a Boolean value that indicates whether the conversion succeeded or failed.

ToUInt64(Single) ToUInt64(Single) ToUInt64(Single) ToUInt64(Single)

重要

この API は CLS 準拠ではありません。

指定した単精度浮動小数点数値を等価の 64 ビット符号なし整数に変換します。Converts the value of the specified single-precision floating-point number to an equivalent 64-bit unsigned integer.

public:
 static System::UInt64 ToUInt64(float value);
[System.CLSCompliant(false)]
public static ulong ToUInt64 (float value);
static member ToUInt64 : single -> uint64
Public Shared Function ToUInt64 (value As Single) As ULong

パラメーター

value
Single Single Single Single

変換する単精度浮動小数点数。The single-precision floating-point number to convert.

戻り値

近似値の 64 ビット符号なし整数に丸められた valuevalue, rounded to the nearest 64-bit unsigned integer. value が 2 つの整数のちょうど中間にある場合は、偶数が返されます。つまり、4.5 は 4 に変換され、5.5 は 6 に変換されます。If value is halfway between two whole numbers, the even number is returned; that is, 4.5 is converted to 4, and 5.5 is converted to 6.

例外

value が 0 未満であるか、MaxValue を超えています。value is less than zero or greater than MaxValue.

次の例では、値のSingle配列内の各要素を符号なし長整数に変換しようとしています。The following example attempts to convert each element in an array of Single values to an unsigned long integer. 出力には、変換が実行される前に小数部の値が丸められることが示されています。The output shows that fractional values are rounded before the conversion is performed.

float[] values= { Single.MinValue, -1.38e10f, -1023.299f, -12.98f,
                  0f, 9.113e-16f, 103.919f, 17834.191f, Single.MaxValue };
ulong result;

foreach (float value in values)
{
   try {
      result = Convert.ToUInt64(value);
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                        value.GetType().Name, value, result.GetType().Name, result);
   }
   catch (OverflowException) {
      Console.WriteLine("{0} is outside the range of the UInt64 type.", value);
   }   
}                                 
// The example displays the following output:
//    -3.402823E+38 is outside the range of the UInt64 type.
//    -1.38E+10 is outside the range of the UInt64 type.
//    -1023.299 is outside the range of the UInt64 type.
//    -12.98 is outside the range of the UInt64 type.
//    Converted the Single value 0 to the UInt64 value 0.
//    Converted the Single value 9.113E-16 to the UInt64 value 0.
//    Converted the Single value 103.919 to the UInt64 value 104.
//    Converted the Single value 17834.19 to the UInt64 value 17834.
//    3.402823E+38 is outside the range of the UInt64 type.
   Dim values() As Single = { Single.MinValue, -1.38e10, -1023.299, -12.98, _
                              0, 9.113e-16, 103.919, 17834.191, Single.MaxValue }
   Dim result As ULong
   
   For Each value As Single In values
      Try
         result = Convert.ToUInt64(value)
         Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                           value.GetType().Name, value, result.GetType().Name, result)
      Catch e As OverflowException
         Console.WriteLine("The {0} value {1} is outside the range of the UInt64 type.", _
                           value.GetType().Name, value)
      End Try   
   Next                                 
   ' The example displays the following output:
'    The Single value -3.402823E+38 is outside the range of the UInt64 type.
'    The Single value -1.38E+10 is outside the range of the UInt64 type.
'    The Single value -1023.299 is outside the range of the UInt64 type.
'    The Single value -12.98 is outside the range of the UInt64 type.
'    Converted the Single value 0 to the UInt64 value 0.
'    Converted the Single value 9.113E-16 to the UInt64 value 0.
'    Converted the Single value 103.919 to the UInt64 value 104.
'    Converted the Single value 17834.19 to the UInt64 value 17834.
'    The Single value 3.402823E+38 is outside the range of the UInt64 type.
こちらもご覧ください

ToUInt64(UInt64) ToUInt64(UInt64) ToUInt64(UInt64) ToUInt64(UInt64)

重要

この API は CLS 準拠ではありません。

指定した 64 ビット符号なし整数が返されます。実際の変換は行われません。Returns the specified 64-bit unsigned integer; no actual conversion is performed.

public:
 static System::UInt64 ToUInt64(System::UInt64 value);
[System.CLSCompliant(false)]
public static ulong ToUInt64 (ulong value);
static member ToUInt64 : uint64 -> uint64
Public Shared Function ToUInt64 (value As ULong) As ULong

パラメーター

value
UInt64 UInt64 UInt64 UInt64

返される 64 ビット符号なし整数。The 64-bit unsigned integer to return.

戻り値

value は変更されずに返されます。value is returned unchanged.

ToUInt64(SByte) ToUInt64(SByte) ToUInt64(SByte) ToUInt64(SByte)

重要

この API は CLS 準拠ではありません。

指定した 8 ビット符号付き整数の値を等価の 64 ビット符号なし整数に変換します。Converts the value of the specified 8-bit signed integer to the equivalent 64-bit unsigned integer.

public:
 static System::UInt64 ToUInt64(System::SByte value);
[System.CLSCompliant(false)]
public static ulong ToUInt64 (sbyte value);
static member ToUInt64 : sbyte -> uint64
Public Shared Function ToUInt64 (value As SByte) As ULong

パラメーター

value
SByte SByte SByte SByte

変換する 8 ビット符号付き整数。The 8-bit signed integer to convert.

戻り値

value と等価の 64 ビット符号なし整数。A 64-bit unsigned integer that is equivalent to value.

例外

value が 0 未満です。value is less than zero.

次の例では、符号付きバイト配列の各要素を符号なし長整数に変換しようとしています。The following example attempts to convert each element in a signed byte array to an unsigned long integer.

sbyte[] numbers = { SByte.MinValue, -1, 0, 10, SByte.MaxValue };
ulong result;

foreach (sbyte number in numbers)
{
   try {
      result = Convert.ToUInt64(number);
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                        number.GetType().Name, number,
                        result.GetType().Name, result);
   }
   catch (OverflowException) {
      Console.WriteLine("The {0} value {1} is outside the range of the UInt64 type.",
                        number.GetType().Name, number);
   }   
}
// The example displays the following output:
//    The SByte value -128 is outside the range of the UInt64 type.
//    The SByte value -1 is outside the range of the UInt64 type.
//    Converted the SByte value 0 to the UInt64 value 0.
//    Converted the SByte value 10 to the UInt64 value 10.
//    Converted the SByte value 127 to the UInt64 value 127.
Dim numbers() As SByte = { SByte.MinValue, -1, 0, 10, SByte.MaxValue }
Dim result As ULong

For Each number As SByte In numbers
   Try
      result = Convert.ToUInt64(number)
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                        number.GetType().Name, number, _
                        result.GetType().Name, result)
   Catch e As OverflowException
      Console.WriteLine("The {0} value {1} is outside the range of the UInt64 type.", _
                        number.GetType().Name, number)
   End Try
Next
' The example displays the following output:
'    The SByte value -128 is outside the range of the UInt64 type.
'    The SByte value -1 is outside the range of the UInt64 type.
'    Converted the SByte value 0 to the UInt64 value 0.
'    Converted the SByte value 10 to the UInt64 value 10.
'    Converted the SByte value 127 to the UInt64 value 127.

ToUInt64(Int16) ToUInt64(Int16) ToUInt64(Int16) ToUInt64(Int16)

重要

この API は CLS 準拠ではありません。

指定した 16 ビット符号付き整数の値を等価の 64 ビット符号なし整数に変換します。Converts the value of the specified 16-bit signed integer to the equivalent 64-bit unsigned integer.

public:
 static System::UInt64 ToUInt64(short value);
[System.CLSCompliant(false)]
public static ulong ToUInt64 (short value);
static member ToUInt64 : int16 -> uint64
Public Shared Function ToUInt64 (value As Short) As ULong

パラメーター

value
Int16 Int16 Int16 Int16

変換する 16 ビット符号付き整数。The 16-bit signed integer to convert.

戻り値

value と等価の 64 ビット符号なし整数。A 64-bit unsigned integer that is equivalent to value.

例外

value が 0 未満です。value is less than zero.

次の例では、16ビット整数の配列内の各要素を符号なし長整数に変換しようとしています。The following example attempts to convert each element in an array of 16-bit integers to an unsigned long integer.

short[] numbers= { Int16.MinValue, -1, 0, 121, 340, Int16.MaxValue };
ulong result;

foreach (short number in numbers)
{
   try {
      result = Convert.ToUInt64(number);
      Console.WriteLine("Converted the {0} value {1} to a {2} value {3}.",
                           number.GetType().Name, number,
                           result.GetType().Name, result);
   }
   catch (OverflowException) {
      Console.WriteLine("{0} is outside the range of the UInt64 type.", number);
   }   

}
// The example displays the following output:
//    -32768 is outside the range of the UInt64 type.
//    -1 is outside the range of the UInt64 type.
//    Converted the Int16 value 0 to a UInt64 value 0.
//    Converted the Int16 value 121 to a UInt64 value 121.
//    Converted the Int16 value 340 to a UInt64 value 340.
//    Converted the Int16 value 32767 to a UInt64 value 32767.
Dim numbers() As Short = { Int16.MinValue, -1, 0, 121, 340, Int16.MaxValue }
Dim result As ULong

For Each number As Short In numbers
   Try
      result = Convert.ToUInt64(number)
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                           number.GetType().Name, number, _
                           result.GetType().Name, result)
   Catch e As OverflowException
      Console.WriteLine("The {0} value {1} is outside the range of the UInt64 type.", _
                        number.GetType().Name, number)
   End Try   
Next
' The example displays the following output:
'    The Int16 value -32768 is outside the range of the UInt64 type.
'    The Int16 value -1 is outside the range of the UInt64 type.
'    Converted the Int16 value 0 to the UInt64 value 0.
'    Converted the Int16 value 121 to the UInt64 value 121.
'    Converted the Int16 value 340 to the UInt64 value 340.
'    Converted the Int16 value 32767 to the UInt64 value 32767.

ToUInt64(Int64) ToUInt64(Int64) ToUInt64(Int64) ToUInt64(Int64)

重要

この API は CLS 準拠ではありません。

指定した 64 ビット符号付き整数の値を等価の 64 ビット符号なし整数に変換します。Converts the value of the specified 64-bit signed integer to an equivalent 64-bit unsigned integer.

public:
 static System::UInt64 ToUInt64(long value);
[System.CLSCompliant(false)]
public static ulong ToUInt64 (long value);
static member ToUInt64 : int64 -> uint64
Public Shared Function ToUInt64 (value As Long) As ULong

パラメーター

value
Int64 Int64 Int64 Int64

変換する 64 ビット符号付き整数。The 64-bit signed integer to convert.

戻り値

value と等価の 64 ビット符号なし整数。A 64-bit unsigned integer that is equivalent to value.

例外

value が 0 未満です。value is less than zero.

次の例では、long 整数の配列内の各要素を符号なし長整数に変換しようとしています。The following example attempts to convert each element in an array of long integers to an unsigned long integer.

long[] numbers = { Int64.MinValue, -19432, -18, 0, 121, 340, Int64.MaxValue };
ulong result;
foreach (long number in numbers)
{
   try {
      result = Convert.ToUInt64(number);
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                        number.GetType().Name, number,
                        result.GetType().Name, result);
   }
   catch (OverflowException) {
      Console.WriteLine("The {0} value {1} is outside the range of the UInt64 type.",
                        number.GetType().Name, number);
   }
}
// The example displays the following output:
//    The Int64 value -9223372036854775808 is outside the range of the UInt64 type.
//    The Int64 value -19432 is outside the range of the UInt64 type.
//    The Int64 value -18 is outside the range of the UInt64 type.
//    Converted the Int64 value 0 to the UInt64 value 0.
//    Converted the Int64 value 121 to the UInt64 value 121.
//    Converted the Int64 value 340 to the UInt64 value 340.
//    Converted the Int64 value 9223372036854775807 to a UInt64 value 9223372036854775807.
Dim numbers() As Long = { Int64.MinValue, -19432, -18, 0, 121, 340, Int64.MaxValue }
Dim result As ULong

For Each number As Long In numbers
   Try
      result = Convert.ToUInt64(number)
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                        number.GetType().Name, number, _
                        result.GetType().Name, result)
   Catch e As OverflowException
      Console.WriteLine("The {0} value {1} is outside the range of the UInt64 type.", _
                        number.GetType().Name, number)
   End Try
Next
' The example displays the following output:
'    The Int64 value -9223372036854775808 is outside the range of the UInt64 type.
'    The Int64 value -19432 is outside the range of the UInt64 type.
'    The Int64 value -18 is outside the range of the UInt64 type.
'    Converted the Int64 value 0 to the UInt64 value 0.
'    Converted the Int64 value 121 to the UInt64 value 121.
'    Converted the Int64 value 340 to the UInt64 value 340.
'    Converted the Int64 value 9223372036854775807 to the UInt64 value 9223372036854775807.

ToUInt64(Int32) ToUInt64(Int32) ToUInt64(Int32) ToUInt64(Int32)

重要

この API は CLS 準拠ではありません。

指定した 32 ビット符号付き整数の値を等価の 64 ビット符号なし整数に変換します。Converts the value of the specified 32-bit signed integer to an equivalent 64-bit unsigned integer.

public:
 static System::UInt64 ToUInt64(int value);
[System.CLSCompliant(false)]
public static ulong ToUInt64 (int value);
static member ToUInt64 : int -> uint64
Public Shared Function ToUInt64 (value As Integer) As ULong

パラメーター

value
Int32 Int32 Int32 Int32

変換する 32 ビット符号付き整数。The 32-bit signed integer to convert.

戻り値

value と等価の 64 ビット符号なし整数。A 64-bit unsigned integer that is equivalent to value.

例外

value が 0 未満です。value is less than zero.

次の例では、整数の配列内の各要素を符号なし長整数に変換しようとしています。The following example attempts to convert each element in an array of integers to an unsigned long integer.

int[] numbers = { Int32.MinValue, -1, 0, 121, 340, Int32.MaxValue };
ulong result;

foreach (int number in numbers)
{
   try {
      result = Convert.ToUInt64(number);
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                        number.GetType().Name, number,
                        result.GetType().Name, result);
   } 
   catch (OverflowException) {
      Console.WriteLine("The {0} value {1} is outside the range of the UInt64 type.",
                        number.GetType().Name, number);
   }   
}
// The example displays the following output:
//    The Int32 value -2147483648 is outside the range of the UInt64 type.
//    The Int32 value -1 is outside the range of the UInt64 type.
//    Converted the Int32 value 0 to the UInt64 value 0.
//    Converted the Int32 value 121 to the UInt64 value 121.
//    Converted the Int32 value 340 to the UInt64 value 340.
//    Converted the Int32 value 2147483647 to the UInt64 value 2147483647.
Dim numbers() As Integer = { Int32.MinValue, -1, 0, 121, 340, Int32.MaxValue }
Dim result As ULong

For Each number As Integer In numbers
   Try
      result = Convert.ToUInt64(number)
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                        number.GetType().Name, number, _
                        result.GetType().Name, result)
   Catch e As OverflowException
      Console.WriteLine("The {0} value {1} is outside the range of the UInt64 type.", _
                        number.GetType().Name, number)
   End Try   
Next
' The example displays the following output:
'    The Int32 value -2147483648 is outside the range of the UInt64 type.
'    The Int32 value -1 is outside the range of the UInt64 type.
'    Converted the Int32 value 0 to the UInt64 value 0.
'    Converted the Int32 value 121 to the UInt64 value 121.
'    Converted the Int32 value 340 to the UInt64 value 340.
'    Converted the Int32 value 2147483647 to the UInt64 value 2147483647.

ToUInt64(Double) ToUInt64(Double) ToUInt64(Double) ToUInt64(Double)

重要

この API は CLS 準拠ではありません。

指定した倍精度浮動小数点数値を等価の 64 ビット符号なし整数に変換します。Converts the value of the specified double-precision floating-point number to an equivalent 64-bit unsigned integer.

public:
 static System::UInt64 ToUInt64(double value);
[System.CLSCompliant(false)]
public static ulong ToUInt64 (double value);
static member ToUInt64 : double -> uint64
Public Shared Function ToUInt64 (value As Double) As ULong

パラメーター

value
Double Double Double Double

変換する倍精度浮動小数点数。The double-precision floating-point number to convert.

戻り値

近似値の 64 ビット符号なし整数に丸められた valuevalue, rounded to the nearest 64-bit unsigned integer. value が 2 つの整数のちょうど中間にある場合は、偶数が返されます。つまり、4.5 は 4 に変換され、5.5 は 6 に変換されます。If value is halfway between two whole numbers, the even number is returned; that is, 4.5 is converted to 4, and 5.5 is converted to 6.

例外

value が 0 未満であるか、MaxValue を超えています。value is less than zero or greater than MaxValue.

次の例では、値のDouble配列内の各要素を符号なし長整数に変換しようとしています。The following example attempts to convert each element in an array of Double values to an unsigned long integer.

double[] values= { Double.MinValue, -1.38e10, -1023.299, -12.98,
                   0, 9.113e-16, 103.919, 17834.191, Double.MaxValue };
ulong result;

foreach (double value in values)
{
   try {
      result = Convert.ToUInt64(value);
      Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.",
                        value.GetType().Name, value,
                        result.GetType().Name, result);
   }
   catch (OverflowException) {
      Console.WriteLine("{0} is outside the range of the UInt64 type.", value);
   }   
}                                 
// The example displays the following output:
//    -1.79769313486232E+308 is outside the range of the UInt64 type.
//    -13800000000 is outside the range of the UInt64 type.
//    -1023.299 is outside the range of the UInt64 type.
//    -12.98 is outside the range of the UInt64 type.
//    Converted the Double value '0' to the UInt64 value 0.
//    Converted the Double value '9.113E-16' to the UInt64 value 0.
//    Converted the Double value '103.919' to the UInt64 value 104.
//    Converted the Double value '17834.191' to the UInt64 value 17834.
//    1.79769313486232E+308 is outside the range of the UInt64 type.
Dim values() As Double = { Double.MinValue, -1.38e10, -1023.299, -12.98, _
                           0, 9.113e-16, 103.919, 17834.191, Double.MaxValue }
Dim result As ULong

For Each value As Double In values
   Try
      result = Convert.ToUInt64(value)
      Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.", _
                        value.GetType().Name, value, _
                        result.GetType().Name, result)
   Catch e As OverflowException
      Console.WriteLine("The {0} value {1} is outside the range of the UInt64 type.", _
                        value.GetType().Name, value)
   End Try   
Next                                 
' The example displays the following output:
'    The Double value -1.79769313486232E+308 is outside the range of the UInt64 type.
'    The Double value -13800000000 is outside the range of the UInt64 type.
'    The Double value -1023.299 is outside the range of the UInt64 type.
'    The Double value -12.98 is outside the range of the UInt64 type.
'    Converted the Double value '0' to the UInt64 value 0.
'    Converted the Double value '9.113E-16' to the UInt64 value 0.
'    Converted the Double value '103.919' to the UInt64 value 104.
'    Converted the Double value '17834.191' to the UInt64 value 17834.
'    The Double value 1.79769313486232E+308 is outside the range of the UInt64 type.
こちらもご覧ください

ToUInt64(Decimal) ToUInt64(Decimal) ToUInt64(Decimal) ToUInt64(Decimal)

重要

この API は CLS 準拠ではありません。

指定した 10 進数値を等価の 64 ビット符号なし整数に変換します。Converts the value of the specified decimal number to an equivalent 64-bit unsigned integer.

public:
 static System::UInt64 ToUInt64(System::Decimal value);
[System.CLSCompliant(false)]
public static ulong ToUInt64 (decimal value);
static member ToUInt64 : decimal -> uint64
Public Shared Function ToUInt64 (value As Decimal) As ULong

パラメーター

value
Decimal Decimal Decimal Decimal

変換する 10 進数。The decimal number to convert.

戻り値

近似値の 64 ビット符号なし整数に丸められた valuevalue, rounded to the nearest 64-bit unsigned integer. value が 2 つの整数のちょうど中間にある場合は、偶数が返されます。つまり、4.5 は 4 に変換され、5.5 は 6 に変換されます。If value is halfway between two whole numbers, the even number is returned; that is, 4.5 is converted to 4, and 5.5 is converted to 6.

例外

value が 0 未満であるか、MaxValue を超えています。value is less than zero or greater than MaxValue.

次の例では、値のDecimal配列内の各要素を符号なし長整数に変換しようとしています。The following example attempts to convert each element in an array of Decimal values to an unsigned long integer.

decimal[] values= { Decimal.MinValue, -1034.23m, -12m, 0m, 147m,
                    199.55m, 9214.16m, Decimal.MaxValue };
ulong result;

foreach (decimal value in values)
{
   try {
      result = Convert.ToUInt64(value);
      Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.",
                        value.GetType().Name, value,
                        result.GetType().Name, result);
   }
   catch (OverflowException) {
      Console.WriteLine("{0} is outside the range of the UInt64 type.",
                        value);
   }   
}                                  
// The example displays the following output:
//    -79228162514264337593543950335 is outside the range of the UInt64 type.
//    -1034.23 is outside the range of the UInt64 type.
//    -12 is outside the range of the UInt64 type.
//    Converted the Decimal value '0' to the UInt64 value 0.
//    Converted the Decimal value '147' to the UInt64 value 147.
//    Converted the Decimal value '199.55' to the UInt64 value 200.
//    Converted the Decimal value '9214.16' to the UInt64 value 9214.
//    79228162514264337593543950335 is outside the range of the UInt64 type.
Dim values() As Decimal = { Decimal.MinValue, -1034.23d, -12d, 0d, 147d, _
                            199.55d, 9214.16d, Decimal.MaxValue }
Dim result As ULong

For Each value As Decimal In values
   Try
      result = Convert.ToUInt64(value)
      Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.", _
                        value.GetType().Name, value, _
                        result.GetType().Name, result)
   Catch e As OverflowException
      Console.WriteLine("The {0} value {1} is outside the range of the UInt64 type.", _
                        value.GetType().Name, value)
   End Try   
Next                                  
' The example displays the following output:
'    The Decimal value -79228162514264337593543950335 is outside the range of the UInt64 type.
'    The Decimal value -1034.23 is outside the range of the UInt64 type.
'    The Decimal value -12 is outside the range of the UInt64 type.
'    Converted the Decimal value '0' to the UInt64 value 0.
'    Converted the Decimal value '147' to the UInt64 value 147.
'    Converted the Decimal value '199.55' to the UInt64 value 200.
'    Converted the Decimal value '9214.16' to the UInt64 value 9214.
'    The Decimal value 79228162514264337593543950335 is outside the range of the UInt64 type.
こちらもご覧ください

ToUInt64(DateTime) ToUInt64(DateTime) ToUInt64(DateTime) ToUInt64(DateTime)

重要

この API は CLS 準拠ではありません。

このメソッドを呼び出すと、必ず InvalidCastException がスローされます。Calling this method always throws InvalidCastException.

public:
 static System::UInt64 ToUInt64(DateTime value);
[System.CLSCompliant(false)]
public static ulong ToUInt64 (DateTime value);
static member ToUInt64 : DateTime -> uint64
Public Shared Function ToUInt64 (value As DateTime) As ULong

パラメーター

value
DateTime DateTime DateTime DateTime

変換する日時の値。The date and time value to convert.

戻り値

この変換はサポートされていません。This conversion is not supported. 値は返されません。No value is returned.

例外

この変換はサポートされていません。This conversion is not supported.

ToUInt64(Char) ToUInt64(Char) ToUInt64(Char) ToUInt64(Char)

重要

この API は CLS 準拠ではありません。

指定した Unicode 文字の値を等価の 64 ビット符号なし整数に変換します。Converts the value of the specified Unicode character to the equivalent 64-bit unsigned integer.

public:
 static System::UInt64 ToUInt64(char value);
[System.CLSCompliant(false)]
public static ulong ToUInt64 (char value);
static member ToUInt64 : char -> uint64
Public Shared Function ToUInt64 (value As Char) As ULong

パラメーター

value
Char Char Char Char

変換する Unicode 文字。The Unicode character to convert.

戻り値

value と等価の 64 ビット符号なし整数。A 64-bit unsigned integer that is equivalent to value.

次の例では、文字配列内の各要素を符号なし長整数に変換します。The following example converts each element in a character array to an unsigned long integer.

char[] chars = { 'a', 'z', '\u0007', '\u03FF',
                 '\u7FFF', '\uFFFE' };
ulong result;
                        
foreach (char ch in chars)
{
   result = Convert.ToUInt64(ch);
   Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.",
                     ch.GetType().Name, ch,
                     result.GetType().Name, result);
}   
// The example displays the following output:
//    Converted the Char value 'a' to the UInt64 value 97.
//    Converted the Char value 'z' to the UInt64 value 122.
//    Converted the Char value '' to the UInt64 value 7.
//    Converted the Char value '?' to the UInt64 value 1023.
//    Converted the Char value '?' to the UInt64 value 32767.
//    Converted the Char value '?' to the UInt64 value 65534.
Dim chars() As Char = { "a"c, "z"c, ChrW(7), ChrW(1023), _
                        ChrW(Short.MaxValue), ChrW(&hFFFE) }
Dim result As ULong
                        
For Each ch As Char in chars
   result = Convert.ToUInt64(ch)
   Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.", _
                     ch.GetType().Name, ch, _
                     result.GetType().Name, result)
Next   
' The example displays the following output:
'    Converted the Char value 'a' to the UInt64 value 97.
'    Converted the Char value 'z' to the UInt64 value 122.
'    Converted the Char value '' to the UInt64 value 7.
'    Converted the Char value '?' to the UInt64 value 1023.
'    Converted the Char value '?' to the UInt64 value 32767.
'    Converted the Char value '?' to the UInt64 value 65534.

ToUInt64(Byte) ToUInt64(Byte) ToUInt64(Byte) ToUInt64(Byte)

重要

この API は CLS 準拠ではありません。

指定した 8 ビット符号なし整数の値を等価の 64 ビット符号なし整数に変換します。Converts the value of the specified 8-bit unsigned integer to the equivalent 64-bit unsigned integer.

public:
 static System::UInt64 ToUInt64(System::Byte value);
[System.CLSCompliant(false)]
public static ulong ToUInt64 (byte value);
static member ToUInt64 : byte -> uint64
Public Shared Function ToUInt64 (value As Byte) As ULong

パラメーター

value
Byte Byte Byte Byte

変換する 8 ビット符号なし整数。The 8-bit unsigned integer to convert.

戻り値

value と等価の 64 ビット符号付き整数。A 64-bit signed integer that is equivalent to value.

次の例では、バイト配列の各要素を符号なし長整数に変換します。The following example converts each element in a byte array to an unsigned long integer.

byte[] bytes = { Byte.MinValue, 14, 122, Byte.MaxValue};
ulong result;

foreach (byte byteValue in bytes)
{
   result = Convert.ToUInt64(byteValue);
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                     byteValue.GetType().Name, byteValue,
                     result.GetType().Name, result);
}
// The example displays the following output:
//    Converted the Byte value 0 to the UInt64 value 0.
//    Converted the Byte value 14 to the UInt64 value 14.
//    Converted the Byte value 122 to the UInt64 value 122.
//    Converted the Byte value 255 to the UInt64 value 255.
Dim bytes() As Byte = { Byte.MinValue, 14, 122, Byte.MaxValue}
Dim result As ULong

For Each byteValue As Byte In bytes
   result = Convert.ToUInt64(byteValue)
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                     byteValue.GetType().Name, byteValue, _
                     result.GetType().Name, result)
Next
' The example displays the following output:
'    Converted the Byte value 0 to the UInt64 value 0.
'    Converted the Byte value 14 to the UInt64 value 14.
'    Converted the Byte value 122 to the UInt64 value 122.
'    Converted the Byte value 255 to the UInt64 value 255.

ToUInt64(Boolean) ToUInt64(Boolean) ToUInt64(Boolean) ToUInt64(Boolean)

重要

この API は CLS 準拠ではありません。

指定したブール値を等価の 64 ビット符号なし整数に変換します。Converts the specified Boolean value to the equivalent 64-bit unsigned integer.

public:
 static System::UInt64 ToUInt64(bool value);
[System.CLSCompliant(false)]
public static ulong ToUInt64 (bool value);
static member ToUInt64 : bool -> uint64
Public Shared Function ToUInt64 (value As Boolean) As ULong

パラメーター

value
Boolean Boolean Boolean Boolean

変換するブール値。The Boolean value to convert.

戻り値

valuetrue の場合は数値の 1。それ以外の場合は 0。The number 1 if value is true; otherwise, 0.

次の例ではtruefalseブール値と値を符号なし長整数に変換します。The following example converts Boolean true and false values to unsigned long integers.

bool falseFlag = false;
bool trueFlag = true;

Console.WriteLine("{0} converts to {1}.", falseFlag,
                  Convert.ToUInt64(falseFlag));
Console.WriteLine("{0} converts to {1}.", trueFlag,
                  Convert.ToUInt64(trueFlag));
// The example displays the following output:
//       False converts to 0.
//       True converts to 1.
Dim falseFlag As Boolean = False
Dim trueFlag As Boolean = True

Console.WriteLine("{0} converts to {1}.", falseFlag, _
                  Convert.ToUInt64(falseFlag))
Console.WriteLine("{0} converts to {1}.", trueFlag, _
                  Convert.ToUInt64(trueFlag))
' The example displays the following output:
'       False converts to 0.
'       True converts to 1.

ToUInt64(Object) ToUInt64(Object) ToUInt64(Object) ToUInt64(Object)

重要

この API は CLS 準拠ではありません。

指定したオブジェクトの値を 64 ビット符号なし整数に変換します。Converts the value of the specified object to a 64-bit unsigned integer.

public:
 static System::UInt64 ToUInt64(System::Object ^ value);
[System.CLSCompliant(false)]
public static ulong ToUInt64 (object value);
static member ToUInt64 : obj -> uint64
Public Shared Function ToUInt64 (value As Object) As ULong

パラメーター

value
Object Object Object Object

IConvertible インターフェイスを実装するオブジェクトか、または nullAn object that implements the IConvertible interface, or null.

戻り値

value と等価の 64 ビット符号なし整数。valuenull の場合は 0。A 64-bit unsigned integer that is equivalent to value, or zero if value is null.

例外

value が適切な形式ではありません。value is not in an appropriate format.

valueIConvertible インターフェイスを実装していません。value does not implement the IConvertible interface.

- または --or- この変換はサポートされていません。The conversion is not supported.

valueMinValue 未満の数値か、MaxValue より大きい数値を表します。value represents a number that is less than MinValue or greater than MaxValue.

次の例では、オブジェクト配列内の各要素を符号なし長整数に変換しようとしています。The following example attempts to convert each element in an object array to an unsigned long integer.

object[] values = { true, -12, 163, 935, 'x', new DateTime(2009, 5, 12),
                    "104", "103.0", "-1",
                    "1.00e2", "One", 1.00e2, 16.3e42};
ulong result;

foreach (object value in values)
{
   try {
      result = Convert.ToUInt64(value);
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                        value.GetType().Name, value,
                        result.GetType().Name, result);
   }
   catch (OverflowException) {
      Console.WriteLine("The {0} value {1} is outside the range of the UInt64 type.",
                        value.GetType().Name, value);
   }                     
   catch (FormatException) {
      Console.WriteLine("The {0} value {1} is not in a recognizable format.",
                        value.GetType().Name, value);
   }
   catch (InvalidCastException) {
      Console.WriteLine("No conversion to a UInt64 exists for the {0} value {1}.",
                        value.GetType().Name, value);
                        
   }
}                           
// The example displays the following output:
//    Converted the Boolean value True to the UInt64 value 1.
//    The Int32 value -12 is outside the range of the UInt64 type.
//    Converted the Int32 value 163 to the UInt64 value 163.
//    Converted the Int32 value 935 to the UInt64 value 935.
//    Converted the Char value x to the UInt64 value 120.
//    No conversion to a UInt64 exists for the DateTime value 5/12/2009 12:00:00 AM.
//    Converted the String value 104 to the UInt64 value 104.
//    The String value 103.0 is not in a recognizable format.
//    The String value -1 is outside the range of the UInt64 type.
//    The String value 1.00e2 is not in a recognizable format.
//    The String value One is not in a recognizable format.
//    Converted the Double value 100 to the UInt64 value 100.
//    The Double value 1.63E+43 is outside the range of the UInt64 type.
Dim values() As Object = { True, -12, 163, 935, "x"c, #5/12/2009#, _
                           "104", "103.0", "-1", _
                           "1.00e2", "One", 1.00e2, 16.3e42}
Dim result As ULong

For Each value As Object In values
   Try
      result = Convert.ToUInt64(value)
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                        value.GetType().Name, value, _
                        result.GetType().Name, result)
   Catch e As OverflowException
      Console.WriteLine("The {0} value {1} is outside the range of the UInt64 type.", _
                        value.GetType().Name, value)
   Catch e As FormatException
      Console.WriteLine("The {0} value {1} is not in a recognizable format.", _
                        value.GetType().Name, value)
   Catch e As InvalidCastException
      Console.WriteLine("No conversion to a UInt64 exists for the {0} value {1}.", _
                        value.GetType().Name, value)
                        
   End Try
Next                           
' The example displays the following output:
'    Converted the Boolean value True to the UInt64 value 1.
'    The Int32 value -12 is outside the range of the UInt64 type.
'    Converted the Int32 value 163 to the UInt64 value 163.
'    Converted the Int32 value 935 to the UInt64 value 935.
'    Converted the Char value x to the UInt64 value 120.
'    No conversion to a UInt64 exists for the DateTime value 5/12/2009 12:00:00 AM.
'    Converted the String value 104 to the UInt64 value 104.
'    The String value 103.0 is not in a recognizable format.
'    The String value -1 is outside the range of the UInt64 type.
'    The String value 1.00e2 is not in a recognizable format.
'    The String value One is not in a recognizable format.
'    Converted the Double value 100 to the UInt64 value 100.
'    The Double value 1.63E+43 is outside the range of the UInt64 type.

注釈

戻り値は、のIConvertible.ToUInt64 value基になる型のメソッドを呼び出した結果です。The return value is the result of invoking the IConvertible.ToUInt64 method of the underlying type of value.

適用対象