Convert.ToUInt16 Convert.ToUInt16 Convert.ToUInt16 Convert.ToUInt16 Method

定義

指定した値を 16 ビット符号なし整数に変換します。Converts a specified value to a 16-bit unsigned integer.

オーバーロード

ToUInt16(String) ToUInt16(String) ToUInt16(String) ToUInt16(String)

指定した数値の文字列形式を等価の 16 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 16-bit unsigned integer.

ToUInt16(UInt16) ToUInt16(UInt16) ToUInt16(UInt16) ToUInt16(UInt16)

指定した 16 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 16-bit unsigned integer; no actual conversion is performed.

ToUInt16(UInt32) ToUInt16(UInt32) ToUInt16(UInt32) ToUInt16(UInt32)

指定した 32 ビット符号なし整数の値を等価の 16 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 16-bit unsigned integer.

ToUInt16(String, Int32) ToUInt16(String, Int32) ToUInt16(String, Int32) ToUInt16(String, Int32)

指定した基数での数値の文字列形式を、等価の 16 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 16-bit unsigned integer.

ToUInt16(Object, IFormatProvider) ToUInt16(Object, IFormatProvider) ToUInt16(Object, IFormatProvider) ToUInt16(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 16 ビット符号なし整数に変換します。Converts the value of the specified object to a 16-bit unsigned integer, using the specified culture-specific formatting information.

ToUInt16(String, IFormatProvider) ToUInt16(String, IFormatProvider) ToUInt16(String, IFormatProvider) ToUInt16(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 16 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 16-bit unsigned integer, using the specified culture-specific formatting information.

ToUInt16(Single) ToUInt16(Single) ToUInt16(Single) ToUInt16(Single)

指定した単精度浮動小数点数値を等価の 16 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 16-bit unsigned integer.

ToUInt16(UInt64) ToUInt16(UInt64) ToUInt16(UInt64) ToUInt16(UInt64)

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

ToUInt16(SByte) ToUInt16(SByte) ToUInt16(SByte) ToUInt16(SByte)

指定した 8 ビット符号付き整数の値を等価の 16 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 16-bit unsigned integer.

ToUInt16(Double) ToUInt16(Double) ToUInt16(Double) ToUInt16(Double)

指定した倍精度浮動小数点数値を等価の 16 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 16-bit unsigned integer.

ToUInt16(Int64) ToUInt16(Int64) ToUInt16(Int64) ToUInt16(Int64)

指定した 64 ビット符号付き整数の値を等価の 16 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 16-bit unsigned integer.

ToUInt16(Object) ToUInt16(Object) ToUInt16(Object) ToUInt16(Object)

指定したオブジェクトの値を 16 ビット符号なし整数に変換します。Converts the value of the specified object to a 16-bit unsigned integer.

ToUInt16(Byte) ToUInt16(Byte) ToUInt16(Byte) ToUInt16(Byte)

指定した 8 ビット符号なし整数の値を等価の 16 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 16-bit unsigned integer.

ToUInt16(Char) ToUInt16(Char) ToUInt16(Char) ToUInt16(Char)

指定した Unicode 文字の値を等価の 16 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 16-bit unsigned integer.

ToUInt16(DateTime) ToUInt16(DateTime) ToUInt16(DateTime) ToUInt16(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.

ToUInt16(Boolean) ToUInt16(Boolean) ToUInt16(Boolean) ToUInt16(Boolean)

指定したブール値を等価の 16 ビット符号なし整数に変換します。Converts the specified Boolean value to the equivalent 16-bit unsigned integer.

ToUInt16(Int16) ToUInt16(Int16) ToUInt16(Int16) ToUInt16(Int16)

指定した 16 ビット符号付き整数の値を等価の 16 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 16-bit unsigned integer.

ToUInt16(Int32) ToUInt16(Int32) ToUInt16(Int32) ToUInt16(Int32)

指定した 32 ビット符号付き整数の値を等価の 16 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 16-bit unsigned integer.

ToUInt16(Decimal) ToUInt16(Decimal) ToUInt16(Decimal) ToUInt16(Decimal)

指定した 10 進数値を等価の 16 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 16-bit unsigned integer.

ToUInt16(String) ToUInt16(String) ToUInt16(String) ToUInt16(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 16 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 16-bit unsigned integer.

public:
 static System::UInt16 ToUInt16(System::String ^ value);
[System.CLSCompliant(false)]
public static ushort ToUInt16 (string value);
static member ToUInt16 : string -> uint16
Public Shared Function ToUInt16 (value As String) As UShort

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 16 ビット符号なし整数。valuenull の場合は 0 (ゼロ)。A 16-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、16 ビット符号なし整数の数値文字列の配列内の各要素を変換しようとしています。The following example attempts to convert each element in a numeric string array to a 16-bit unsigned integer.

string[] values = { "1603", "1,603", "one", "1.6e03", "1.2e-02", 
                    "-1326", "1074122" };
ushort result;

foreach (string value in values)
{
   try {
      result = Convert.ToUInt16(value);
      Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.",
                        value.GetType().Name, value,
                        result.GetType().Name, result);
   }                     
   catch (FormatException) {
      Console.WriteLine("The {0} value {1} is not in a recognizable format.",
                        value.GetType().Name, value);
   }                     
   catch (OverflowException) {
      Console.WriteLine("{0} is outside the range of the UInt16 type.", value);
   }   
}
// The example displays the following output:
//    Converted the String value '1603' to the UInt16 value 1603.
//    The String value 1,603 is not in a recognizable format.
//    The String value one is not in a recognizable format.
//    The String value 1.6e03 is not in a recognizable format.
//    The String value 1.2e-02 is not in a recognizable format.
//    -1326 is outside the range of the UInt16 type.
//    1074122 is outside the range of the UInt16 type.      
Dim values() As String = { "1603", "1,603", "one", "1.6e03", "1.2e-02", _
                           "-1326", "1074122" }
Dim result As UShort

For Each value As String In values
   Try
      result = Convert.ToUInt16(value)
      Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.", _
                        value.GetType().Name, value, _
                        result.GetType().Name, result)
   Catch e As FormatException
      Console.WriteLine("The {0} value {1} is not in a recognizable format.", _
                        value.GetType().Name, value)
   Catch e As OverflowException
      Console.WriteLine("{0} is outside the range of the UInt16 type.", value)
   End Try   
Next
' The example displays the following output:
'    Converted the String value '1603' to the UInt16 value 1603.
'    The String value 1,603 is not in a recognizable format.
'    The String value one is not in a recognizable format.
'    The String value 1.6e03 is not in a recognizable format.
'    The String value 1.2e-02 is not in a recognizable format.
'    -1326 is outside the range of the UInt16 type.
'    1074122 is outside the range of the UInt16 type.      

注釈

使用して、ToUInt16(String)メソッドは渡すvalueUInt16.Parse(String)メソッド。Using the ToUInt16(String) method is equivalent to passing value to the UInt16.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.

呼び出すことができます、変換が失敗した場合に例外を処理しないようにする場合、UInt16.TryParseメソッド代わりにします。If you prefer not to handle an exception if the conversion fails, you can call the UInt16.TryParse method instead. 返します、Boolean変換が成功したか、失敗したかどうかを示す値。It returns a Boolean value that indicates whether the conversion succeeded or failed.

ToUInt16(UInt16) ToUInt16(UInt16) ToUInt16(UInt16) ToUInt16(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が返されます。実際の変換は行われません。Returns the specified 16-bit unsigned integer; no actual conversion is performed.

public:
 static System::UInt16 ToUInt16(System::UInt16 value);
[System.CLSCompliant(false)]
public static ushort ToUInt16 (ushort value);
static member ToUInt16 : uint16 -> uint16
Public Shared Function ToUInt16 (value As UShort) As UShort

パラメーター

value
UInt16 UInt16 UInt16 UInt16

返される 16 ビット符号なし整数。The 16-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.

ToUInt16(UInt32) ToUInt16(UInt32) ToUInt16(UInt32) ToUInt16(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 16 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 16-bit unsigned integer.

public:
 static System::UInt16 ToUInt16(System::UInt32 value);
[System.CLSCompliant(false)]
public static ushort ToUInt16 (uint value);
static member ToUInt16 : uint32 -> uint16
Public Shared Function ToUInt16 (value As UInteger) As UShort

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 16 ビット符号なし整数。A 16-bit unsigned integer that is equivalent to value.

例外

valueMaxValue より大きくなっています。value is greater than MaxValue.

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

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

foreach (uint number in numbers)
{
   try {
      result = Convert.ToUInt16(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 UInt16 type.",
                        number.GetType().Name, number);
   }
}
// The example displays the following output:
//    Converted the UInt32 value '0' to the UInt16 value 0.
//    Converted the UInt32 value '121' to the UInt16 value 121.
//    Converted the UInt32 value '340' to the UInt16 value 340.
//    The UInt32 value 4294967295 is outside the range of the UInt16 type.
Dim numbers() As UInteger = { UInt32.MinValue, 121, 340, UInt32.MaxValue }
Dim result As UShort
For Each number As UInteger In numbers
   Try
      result = Convert.ToUInt16(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 UInt16 type.", _
                        number.GetType().Name, number)
   End Try
Next
' The example displays the following output:
'    Converted the UInt32 value '0' to the UInt16 value 0.
'    Converted the UInt32 value '121' to the UInt16 value 121.
'    Converted the UInt32 value '340' to the UInt16 value 340.
'    The UInt32 value 4294967295 is outside the range of the UInt16 type.

ToUInt16(String, Int32) ToUInt16(String, Int32) ToUInt16(String, Int32) ToUInt16(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 16 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 16-bit unsigned integer.

public:
 static System::UInt16 ToUInt16(System::String ^ value, int fromBase);
[System.CLSCompliant(false)]
public static ushort ToUInt16 (string value, int fromBase);
static member ToUInt16 : string * int -> uint16
Public Shared Function ToUInt16 (value As String, fromBase As Integer) As UShort

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 16 ビット符号なし整数。valuenull の場合は 0 (ゼロ)。A 16-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、16 進数の値として数値文字列の配列内の各要素を解釈して、16 ビット符号なし整数に変換しようとします。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 16-bit integer.

using System;

public class Example
{
   public static void Main()
   {
      string[] hexStrings = { "8000", "0FFF", "f000", "00A30", "D", "-13", 
                              "9AC61", "GAD" };
      foreach (string hexString in hexStrings)
      {
         try {
            ushort number = Convert.ToUInt16(hexString, 16);
            Console.WriteLine("Converted '{0}' to {1:N0}.", hexString, number);
         }
         catch (FormatException) {
            Console.WriteLine("'{0}' is not in the correct format for a hexadecimal number.", 
                              hexString);
         }
         catch (OverflowException) {
            Console.WriteLine("'{0}' is outside the range of an Int16.", hexString);
         }
         catch (ArgumentException) {
            Console.WriteLine("'{0}' is invalid in base 16.", hexString);
         }
      }                                            
   }
}
// The example displays the following output:
//    Converted '8000' to 32,768.
//    Converted '0FFF' to 4,095.
//    Converted 'f000' to 61,440.
//    Converted '00A30' to 2,608.
//    Converted 'D' to 13.
//    '-13' is invalid in base 16.
//    '9AC61' is outside the range of an Int16.
//    'GAD' is not in the correct format for a hexadecimal number.
Module Example
   Public Sub Main()
      Dim hexStrings() As String = { "8000", "0FFF", "f000", "00A30", "D", _
                                     "-13", "9AC61", "GAD" }
      For Each hexString As String In hexStrings
         Try
            Dim number As UShort = Convert.ToUInt16(hexString, 16)
            Console.WriteLine("Converted '{0}' to {1:N0}.", hexString, number)
         Catch e As FormatException
            Console.WriteLine("'{0}' is not in the correct format for a hexadecimal number.", _
                              hexString)
         Catch e As OverflowException
            Console.WriteLine("'{0}' is outside the range of an Int16.", hexString)
         Catch e As ArgumentException
            Console.WriteLine("'{0}' is invalid in base 16.", hexString)
         End Try
      Next                                            
   End Sub
End Module
'    ' The example displays the following output:
'    Converted '8000' to 32,768.
'    Converted '0FFF' to 4,095.
'    Converted 'f000' to 61,440.
'    Converted '00A30' to 2,608.
'    Converted 'D' to 13.
'    '-13' is invalid in base 16.
'    '9AC61' is outside the range of an Int16.
'    'GAD' is not in the correct format for a hexadecimal number.

注釈

場合fromBase16 は、数で指定されたプレフィックスにすることができます、 value "0 x"または「0 X」を持つパラメーター。If fromBase is 16, you can prefix the number specified by the value parameter with "0x" or "0X".

UInt16データ型が符号なしの値のみをサポートしている、ToUInt16(String, Int32)メソッドvalue符号なしのバイナリ表現を使用して表されます。Because the UInt16 data type supports unsigned values only, the ToUInt16(String, Int32) method assumes that value is expressed using unsigned binary representation. つまり、数値の値を表すすべての 16 ビットを使用して、符号ビットが存在しません。In other words, all 16 bits are used to represent the numeric value, and a sign bit is absent. 範囲外を符号付き整数の値をコードが記述することが結果として、UInt16データ型に変換されます、UInt16メソッドの例外がスローされることがなく値。As a result, it is possible to write code in which a signed integer value that is out of the range of the UInt16 data type is converted to a UInt16 value without the method throwing an exception. 次の例では、変換Int16.MinValueの 16 進数文字列形式を呼び出し、その後に、ToUInt16(String, Int32)メソッド。The following example converts Int16.MinValue to its hexadecimal string representation, and then calls the ToUInt16(String, Int32) method. 例外をスローする代わりにこのメソッドは、メッセージを表示します「32768 に 0x8000 変換します」。Instead of throwing an exception, the method displays the message, "0x8000 converts to 32768."

// Create a hexadecimal value out of range of the UInt16 type.
string value = Convert.ToString(Int16.MinValue, 16);
// Convert it back to a number.
try
{
   UInt16 number = Convert.ToUInt16(value, 16);
   Console.WriteLine("0x{0} converts to {1}.", value, number);
}   
catch (OverflowException)
{
   Console.WriteLine("Unable to convert '0x{0}' to an unsigned short integer.", 
                     value);
}   
' Create a hexadecimal value out of range of the UInt16 type.
Dim value As String = Convert.ToString(Short.MinValue, 16)
' Convert it back to a number.
Try
   Dim number As UInt16 = Convert.ToUInt16(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 short integer.", _
                     value)
End Try   

二項演算または数値変換を実行する場合は、常にメソッドまたは演算子を使用している適切な数値表現の特定の値を解釈することを確認する開発者の責任です。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. 次の例では、そのメソッドで不適切な使用されないバイナリ表現の 16 進文字列を変換するときに、2 の補数表現を使用する値を解釈することを確認する方法の 1 つ、UInt16値。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 UInt16 value. 例では、その値の文字列形式に変換される間に、値で、符号付き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. 例が、値を変換するときに、UInt16値、元の値が符号付き整数をしたかどうかが確認します。When the example converts the value to a UInt16 value, it checks whether the original value was a signed integer. そうである場合、およびその上位ビットは (これは、元の値が負の値であることを示します) に設定されている場合、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 UInt16 type.
short sourceNumber = Int16.MinValue;
bool isSigned = Math.Sign((short)sourceNumber.GetType().GetField("MinValue").GetValue(null)) == -1;
string value = Convert.ToString(sourceNumber, 16);
UInt16 targetNumber;
try
{
   targetNumber = Convert.ToUInt16(value, 16);
   if (isSigned && ((targetNumber & 0x8000) != 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 short integer.", value);
} 
// Displays the following to the console:
//    Unable to convert '0x8000' to an unsigned short integer.     
' Create a negative hexadecimal value out of range of the UInt16 type.
Dim sourceNumber As Short = Short.MinValue
Dim isSigned As Boolean = Math.Sign(sourceNumber.MinValue) = -1
Dim value As String = Convert.ToString(sourceNumber, 16)
Dim targetNumber As UInt16
Try
   targetNumber = Convert.ToUInt16(value, 16)
   If isSigned And ((targetNumber And &H8000) <> 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 short integer.", _
                     value)
End Try 
' Displays the following to the console:
'    Unable to convert '0x8000' to an unsigned short integer.     

ToUInt16(Object, IFormatProvider) ToUInt16(Object, IFormatProvider) ToUInt16(Object, IFormatProvider) ToUInt16(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 16 ビット符号なし整数に変換します。Converts the value of the specified object to a 16-bit unsigned integer, using the specified culture-specific formatting information.

public:
 static System::UInt16 ToUInt16(System::Object ^ value, IFormatProvider ^ provider);
[System.CLSCompliant(false)]
public static ushort ToUInt16 (object value, IFormatProvider provider);
static member ToUInt16 : obj * IFormatProvider -> uint16
Public Shared Function ToUInt16 (value As Object, provider As IFormatProvider) As UShort

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 16 ビット符号なし整数。valuenull の場合は 0。A 16-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、定義、HexStringを実装するクラス、IConvertibleインターフェイスとが両方 16 ビット符号付きと 16 ビット符号なしの値の文字列表現を保持するため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 16-bit signed and 16-bit unsigned values. クラスが含まれています、 Sign 16 進値の符号を示すプロパティです。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 > 4)
            throw new ArgumentException("The string representation of a 160bit integer cannot have more than four characters.");
         else if (! Regex.IsMatch(value, "([0-9,A-F]){1,4}", RegexOptions.IgnoreCase))
            throw new ArgumentException("The hexadecimal representation of a 16-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.ToInt16(hexString, 16)));
      else
         try {
            return Convert.ToByte(UInt16.Parse(hexString, NumberStyles.HexNumber));
         }
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is out of range of the UInt16 type.", Convert.ToUInt16(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.ToInt16(hexString, 16)));
      }
      
      UInt16 codePoint = UInt16.Parse(this.hexString, NumberStyles.HexNumber);
      return Convert.ToChar(codePoint);
   } 
   
   public DateTime ToDateTime(IFormatProvider provider)
   {
      throw new InvalidCastException("Hexadecimal to DateTime conversion is not supported.");
   }
   
   public decimal ToDecimal(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative) 
      {
         short hexValue = Int16.Parse(hexString, NumberStyles.HexNumber);
         return Convert.ToDecimal(hexValue);
      }
      else 
      {
         ushort hexValue = UInt16.Parse(hexString, NumberStyles.HexNumber);
         return Convert.ToDecimal(hexValue);
      }
   }
   
   public double ToDouble(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         return Convert.ToDouble(Int16.Parse(hexString, NumberStyles.HexNumber));
      else
         return Convert.ToDouble(UInt16.Parse(hexString, NumberStyles.HexNumber));
   }   
   
   public short ToInt16(IFormatProvider provider) 
   {
      if (signBit == SignBit.Negative)
         return Int16.Parse(hexString, NumberStyles.HexNumber);
      else
         try {
            return Convert.ToInt16(UInt16.Parse(hexString, NumberStyles.HexNumber));
         }
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is out of range of the Int16 type.", 
                                                      Convert.ToUInt16(hexString, 16)), e);
         }
   }
   
   public int ToInt32(IFormatProvider provider) 
   {
      if (signBit == SignBit.Negative)
         return Convert.ToInt32(Int16.Parse(hexString, NumberStyles.HexNumber));
      else
         return Convert.ToInt32(UInt16.Parse(hexString, NumberStyles.HexNumber));
   }
   
   public long ToInt64(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         return Convert.ToInt64(Int16.Parse(hexString, NumberStyles.HexNumber));
      else
         return Int64.Parse(hexString, NumberStyles.HexNumber);
   }
   
   public sbyte ToSByte(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         try {
            return Convert.ToSByte(Int16.Parse(hexString, NumberStyles.HexNumber));
         }
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is outside the range of the SByte type.", 
                                                      Int16.Parse(hexString, NumberStyles.HexNumber), e));
         }
      else
         try {
            return Convert.ToSByte(UInt16.Parse(hexString, NumberStyles.HexNumber));
         }   
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is outside the range of the SByte type.", 
                                                   UInt16.Parse(hexString, NumberStyles.HexNumber)), e);
         } 
   }

   public float ToSingle(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         return Convert.ToSingle(Int16.Parse(hexString, NumberStyles.HexNumber));
      else
         return Convert.ToSingle(UInt16.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 UInt16 ToUInt16(IFormatProvider provider) 
   {
      if (signBit == SignBit.Negative)
         throw new OverflowException(String.Format("{0} is outside the range of the UInt16 type.", 
                                                   Int16.Parse(hexString, NumberStyles.HexNumber)));
      else
         return UInt16.Parse(hexString, NumberStyles.HexNumber);
   }

   public UInt32 ToUInt32(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         throw new OverflowException(String.Format("{0} is outside the range of the UInt32 type.", 
                                                   Int16.Parse(hexString, NumberStyles.HexNumber)));
      else
         return Convert.ToUInt32(hexString, 16);
   }
   
   public UInt64 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 > 4 Then
            Throw New ArgumentException("The string representation of a 16-bit integer cannot have more than four characters.")
         Else If Not Regex.IsMatch(value, "([0-9,A-F]){1,4}", RegexOptions.IgnoreCase) Then
            Throw New ArgumentException("The hexadecimal representation of a 16-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.ToInt16(hexString, 16))) 
      Else
         Try
            Return Convert.ToByte(Int16.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is out of range of the UInt16 type.", Convert.ToUInt16(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.ToInt16(hexString, 16)))
      End If
      
      Dim codePoint As UInt16 = UInt16.Parse(Me.hexString, NumberStyles.HexNumber)
      Return Convert.ToChar(codePoint)
   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 Short = Int16.Parse(hexString, NumberStyles.HexNumber)
         Return Convert.ToDecimal(hexValue)
      Else
         Dim hexValue As UShort = UInt16.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(Int16.Parse(hexString, NumberStyles.HexNumber))
      Else
         Return Convert.ToDouble(UInt16.Parse(hexString, NumberStyles.HexNumber))
      End If   
   End Function   
   
   Public Function ToInt16(provider As IFormatProvider) As Int16 _
                   Implements IConvertible.ToInt16
      If signBit = SignBit.Negative Then
         Return Int16.Parse(hexString, NumberStyles.HexNumber)
      Else
         Try
            Return Convert.ToInt16(UInt16.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is out of range of the Int16 type.", Convert.ToUInt16(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
         Return Convert.ToInt32(Int16.Parse(hexString, NumberStyles.HexNumber))
      Else
         Return Convert.ToInt32(UInt16.Parse(hexString, NumberStyles.HexNumber))
      End If   
   End Function
   
   Public Function ToInt64(provider As IFormatProvider) As Int64 _
                   Implements IConvertible.ToInt64
      If signBit = signBit.Negative Then
         Return Convert.ToInt64(Int16.Parse(hexString, NumberStyles.HexNumber))
      Else
         Return Int64.Parse(hexString, NumberStyles.HexNumber)
      End If   
   End Function
   
   Public Function ToSByte(provider As IFormatProvider) As SByte _
                   Implements IConvertible.ToSByte
      If signBit = signBit.Negative Then
         Try
            Return Convert.ToSByte(Int16.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is outside the range of the SByte type.", _
                                                      Int16.Parse(hexString, NumberStyles.HexNumber), e))
         End Try
      Else
         Try
            Return Convert.ToSByte(UInt16.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is outside the range of the SByte type.", _
                                                    UInt16.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(Int16.Parse(hexString, NumberStyles.HexNumber))
      Else
         Return Convert.ToSingle(UInt16.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.", _
                                                   Int16.Parse(hexString, NumberStyles.HexNumber)))
      Else
         Return Convert.ToUInt16(hexString, 16)
      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.", _
                                                   Int16.Parse(hexString, NumberStyles.HexNumber)))
      Else
         Return Convert.ToUInt32(hexString, 16)
      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.", _
                                                   Int16.Parse(hexString, NumberStyles.HexNumber)))
      Else
         Return Convert.ToUInt64(hexString, 16)
      End If   
   End Function
   
End Structure

例を次に示しますへの呼び出し、ToUInt16(Object, IFormatProvider)を渡すメソッドをHexStringをパラメーターとしてオブジェクトをさらに、呼び出す、IConvertible.ToUInt16の実装、HexStringクラス。The following example shows that a call to the ToUInt16(Object, IFormatProvider) method that passes a HexString object as a parameter, in turn, calls the IConvertible.ToUInt16 implementation of the HexString class.

public class Example
{
   public static void Main()
   {
      ushort positiveValue = 32000;
      short negativeValue = -1;
      
      HexString positiveString = new HexString();
      positiveString.Sign = (SignBit) Math.Sign(positiveValue);
      positiveString.Value = positiveValue.ToString("X2");
      
      HexString negativeString = new HexString();
      negativeString.Sign = (SignBit) Math.Sign(negativeValue);
      negativeString.Value = negativeValue.ToString("X2");
      
      try {
         Console.WriteLine("0x{0} converts to {1}.", positiveString.Value, Convert.ToUInt16(positiveString));
      }
      catch (OverflowException) {
         Console.WriteLine("{0} is outside the range of the UInt16 type.", 
                           Int16.Parse(negativeString.Value, NumberStyles.HexNumber));
      }

      try {
         Console.WriteLine("0x{0} converts to {1}.", negativeString.Value, Convert.ToUInt16(negativeString));
      }
      catch (OverflowException) {
         Console.WriteLine("{0} is outside the range of the UInt16 type.", 
                           Int16.Parse(negativeString.Value, NumberStyles.HexNumber));
      }   
   }
}
// The example displays the following output:
//       0x7D00 converts to 32000.
//       -1 is outside the range of the UInt16 type.
Module Example
   Public Sub Main()
      Dim positiveValue As UInt16 = 32000
      Dim negativeValue As Int16 = -1
      
      
      Dim positiveString As New HexString()
      positiveString.Sign = CType(Math.Sign(positiveValue), SignBit)
      positiveString.Value = positiveValue.ToString("X4")
      
      Dim negativeString As New HexString()
      negativeString.Sign = CType(Math.Sign(negativeValue), SignBit)
      negativeString.Value = negativeValue.ToString("X4")
      
      Try
         Console.WriteLine("0x{0} converts to {1}.", positiveString.Value, Convert.ToUInt16(positiveString))
      Catch e As OverflowException
         Console.WriteLine("{0} is outside the range of the UInt16 type.", _
                           Int16.Parse(positiveString.Value, NumberStyles.HexNumber))
      End Try

      Try
         Console.WriteLine("0x{0} converts to {1}.", negativeString.Value, Convert.ToUInt16(negativeString))
      Catch e As OverflowException
         Console.WriteLine("{0} is outside the range of the UInt16 type.", _
                           Int16.Parse(negativeString.Value, NumberStyles.HexNumber))
      End Try   
   End Sub
End Module
' The example dosplays the following output:
'       0x7D00 converts to 32000.
'       -1 is outside the range of the UInt16 type.

注釈

戻り値は呼び出しの結果、IConvertible.ToUInt16の基になる型のメソッドvalueします。The return value is the result of invoking the IConvertible.ToUInt16 method of the underlying type of value.

provider ユーザーがカルチャに固有の変換についての内容を指定できるようにvalueします。provider enables the user to specify culture-specific conversion information about the contents of value. たとえば場合、valueは、 String 、数値を表しているproviderその数を表すために使用する表記法に関するカルチャ固有の情報を指定できます。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.

基本型を無視するprovider。 ただし、場合に、パラメーターを使用できますvalueユーザー定義の型を実装するには、IConvertibleインターフェイス。The base types ignore provider; however, the parameter may be used if value is a user-defined type that implements the IConvertible interface.

ToUInt16(String, IFormatProvider) ToUInt16(String, IFormatProvider) ToUInt16(String, IFormatProvider) ToUInt16(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 16 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 16-bit unsigned integer, using the specified culture-specific formatting information.

public:
 static System::UInt16 ToUInt16(System::String ^ value, IFormatProvider ^ provider);
[System.CLSCompliant(false)]
public static ushort ToUInt16 (string value, IFormatProvider provider);
static member ToUInt16 : string * IFormatProvider -> uint16
Public Shared Function ToUInt16 (value As String, provider As IFormatProvider) As UShort

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 16 ビット符号なし整数。valuenull の場合は 0 (ゼロ)。A 16-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、カスタムNumberFormatInfo正の符号と負の符号として"neg"の文字列として文字列"pos"を認識するオブジェクト。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. この両方のプロバイダーを使用して整数数値の文字列配列の各要素に変換を試みます、NumberFormatInfoインバリアント カルチャのプロバイダー。It then attempts to convert each element of a numeric string array to an integer using both this 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 of its
      // properties that apply to numbers.
      NumberFormatInfo provider = new NumberFormatInfo();
      provider.PositiveSign = "pos ";
      provider.NegativeSign = "neg ";

      // Define an array of strings to convert to UInt16 values.
      string[] values= { "34567", "+34567", "pos 34567", "34567.", 
                         "34567.", "65535", "65535", "65535" };         

      foreach (string value in values)
      {
         Console.Write("{0,-12:}  -->  ", value);
         try {
            Console.WriteLine("{0,17}", Convert.ToUInt16(value, provider));
         }
         catch (FormatException e) {       
            Console.WriteLine("{0,17}", e.GetType().Name);
         }     
      }
   }
}
// The example displays the following output:
//       34567         -->              34567
//       +34567        -->    FormatException
//       pos 34567     -->              34567
//       34567.        -->    FormatException
//       34567.        -->    FormatException
//       65535         -->              65535
//       65535         -->              65535
//       65535         -->              65535
Imports System.Globalization

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

      ' Define an array of strings to convert to UInt16 values.
      Dim values() As String = { "34567", "+34567", "pos 34567", _
                                 "34567.", "34567.", "65535", _
                                 "65535", "65535" }         

      For Each value As String In values
         Console.Write("{0,-12:}  -->  ", value)
         Try
            Console.WriteLine("{0,17}", Convert.ToUInt16(value, provider))
         Catch e As FormatException       
            Console.WriteLine("{0,17}", e.GetType().Name)
         End Try     
      Next
    End Sub 
End Module 
' The example displays the following output:
'       34567         -->              34567
'       +34567        -->    FormatException
'       pos 34567     -->              34567
'       34567.        -->    FormatException
'       34567.        -->    FormatException
'       65535         -->              65535
'       65535         -->              65535
'       65535         -->              65535

注釈

戻り値は呼び出しの結果UInt16.Parsevalueします。The return value is the result of invoking UInt16.Parse on value.

provider IFormatProviderインスタンスを取得する、NumberFormatInfoオブジェクト。provider is an IFormatProvider instance that obtains a NumberFormatInfo object. NumberFormatInfoオブジェクトの書式設定に関するカルチャ固有の情報を提供valueします。The NumberFormatInfo object provides culture-specific information about the format of value. 場合providernullNumberFormatInfo現在のカルチャが使用されます。If provider is null, the NumberFormatInfo for the current culture is used.

呼び出すことができます、変換が失敗した場合に例外を処理しないようにする場合、UInt16.TryParseメソッド代わりにします。If you prefer not to handle an exception if the conversion fails, you can call the UInt16.TryParse method instead. 返します、Boolean変換が成功したか、失敗したかどうかを示す値。It returns a Boolean value that indicates whether the conversion succeeded or failed.

ToUInt16(Single) ToUInt16(Single) ToUInt16(Single) ToUInt16(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 16 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 16-bit unsigned integer.

public:
 static System::UInt16 ToUInt16(float value);
[System.CLSCompliant(false)]
public static ushort ToUInt16 (float value);
static member ToUInt16 : single -> uint16
Public Shared Function ToUInt16 (value As Single) As UShort

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 16 ビット符号なし整数に丸められた valuevalue, rounded to the nearest 16-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.

次の例の配列内の各要素を変換するStringを符号なし 16 ビット整数値。The following example converts each element in an array of String values to an unsigned 16-bit integer.

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

foreach (float number in numbers)
{
   try {
      result = Convert.ToUInt16(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("{0} is outside the range of the UInt16 type.", number);
   }   
}                                 
// The example displays the following output:
//    -3.402823E+38 is outside the range of the UInt16 type.
//    -1.38E+10 is outside the range of the UInt16 type.
//    -1023.299 is outside the range of the UInt16 type.
//    -12.98 is outside the range of the UInt16 type.
//    Converted the Single value '0' to the UInt16 value 0.
//    Converted the Single value '9.113E-16' to the UInt16 value 0.
//    Converted the Single value '103.919' to the UInt16 value 104.
//    Converted the Single value '17834.19' to the UInt16 value 17834.
//    3.402823E+38 is outside the range of the UInt16 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 UShort

For Each value As Single In values
   Try
      result = Convert.ToUInt16(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 UInt16 type.", value)
   End Try   
Next                                 
' The example displays the following output:
'    -3.402823E+38 is outside the range of the UInt16 type.
'    -1.38E+10 is outside the range of the UInt16 type.
'    -1023.299 is outside the range of the UInt16 type.
'    -12.98 is outside the range of the UInt16 type.
'    Converted the Single value '0' to the UInt16 value 0.
'    Converted the Single value '9.113E-16' to the UInt16 value 0.
'    Converted the Single value '103.919' to the UInt16 value 104.
'    Converted the Single value '17834.19' to the UInt16 value 17834.
'    3.402823E+38 is outside the range of the UInt16 type.
こちらもご覧ください

ToUInt16(UInt64) ToUInt16(UInt64) ToUInt16(UInt64) ToUInt16(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の値を等価の 16 ビット符号なし整数に変換します。Converts the value of the specified 64-bit unsigned integer to an equivalent 16-bit unsigned integer.

public:
 static System::UInt16 ToUInt16(System::UInt64 value);
[System.CLSCompliant(false)]
public static ushort ToUInt16 (ulong value);
static member ToUInt16 : uint64 -> uint16
Public Shared Function ToUInt16 (value As ULong) As UShort

パラメーター

value
UInt64 UInt64 UInt64 UInt64

変換する 64 ビット符号なし整数。The 64-bit unsigned integer to convert.

戻り値

value と等価の 16 ビット符号なし整数。A 16-bit unsigned integer that is equivalent to value.

例外

valueMaxValue より大きくなっています。value is greater than MaxValue.

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

ulong[] numbers = { UInt64.MinValue, 121, 340, UInt64.MaxValue };
ushort result;

foreach (ulong number in numbers)
{
   try {
      result = Convert.ToUInt16(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 UInt16 type.",
                        number.GetType().Name, number);
   }
}
// The example displays the following output:
//    Converted the UInt64 value '0' to the UInt16 value 0.
//    Converted the UInt64 value '121' to the UInt16 value 121.
//    Converted the UInt64 value '340' to the UInt16 value 340.
//    The UInt64 value 18446744073709551615 is outside the range of the UInt16 type.
Dim numbers() As ULong = { UInt64.MinValue, 121, 340, UInt64.MaxValue }
Dim result As UShort
For Each number As ULong In numbers
   Try
      result = Convert.ToUInt16(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 UInt16 type.", _
                        number.GetType().Name, number)
   End Try
Next
' The example displays the following output:
'    Converted the UInt64 value '0' to the UInt16 value 0.
'    Converted the UInt64 value '121' to the UInt16 value 121.
'    Converted the UInt64 value '340' to the UInt16 value 340.
'    The UInt64 value 18446744073709551615 is outside the range of the UInt16 type.

ToUInt16(SByte) ToUInt16(SByte) ToUInt16(SByte) ToUInt16(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 16 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 16-bit unsigned integer.

public:
 static System::UInt16 ToUInt16(System::SByte value);
[System.CLSCompliant(false)]
public static ushort ToUInt16 (sbyte value);
static member ToUInt16 : sbyte -> uint16
Public Shared Function ToUInt16 (value As SByte) As UShort

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 16 ビット符号なし整数。A 16-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、符号なし 16 ビット整数を符号付きバイト配列内の各要素に変換します。The following example converts each element in a signed byte array to an unsigned 16-bit integer.

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

foreach (sbyte number in numbers)
{
   try {
      result = Convert.ToUInt16(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("{0} is outside the range of the UInt16 type.", number);
   }
}
// The example displays the following output:
//    -128 is outside the range of the UInt16 type.
//    -1 is outside the range of the UInt16 type.
//    Converted the SByte value '0' to the UInt16 value 0.
//    Converted the SByte value '10' to the UInt16 value 10.
//    Converted the SByte value '127' to the UInt16 value 127.
Dim numbers() As SByte = { SByte.MinValue, -1, 0, 10, SByte.MaxValue }
Dim result As UShort

For Each number As SByte In numbers
   Try
      result = Convert.ToUInt16(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("{0} is outside the range of the UInt16 type.", number)
   End Try
Next
' The example displays the following output:
'    -128 is outside the range of the UInt16 type.
'    -1 is outside the range of the UInt16 type.
'    Converted the SByte value '0' to the UInt16 value 0.
'    Converted the SByte value '10' to the UInt16 value 10.
'    Converted the SByte value '127' to the UInt16 value 127.

ToUInt16(Double) ToUInt16(Double) ToUInt16(Double) ToUInt16(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 16 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 16-bit unsigned integer.

public:
 static System::UInt16 ToUInt16(double value);
[System.CLSCompliant(false)]
public static ushort ToUInt16 (double value);
static member ToUInt16 : double -> uint16
Public Shared Function ToUInt16 (value As Double) As UShort

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 16 ビット符号なし整数に丸められた valuevalue, rounded to the nearest 16-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.

次の例の配列内の各要素を変換するDoubleを符号なし 16 ビット整数値。The following example converts each element in an array of Double values to an unsigned 16-bit integer.

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

foreach (double number in numbers)
{
   try {
      result = Convert.ToUInt16(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("{0} is outside the range of the UInt16 type.", number);
   }   
}                                 
// The example displays the following output:
//    -1.79769313486232E+308 is outside the range of the UInt16 type.
//    -13800000000 is outside the range of the UInt16 type.
//    -1023.299 is outside the range of the UInt16 type.
//    -12.98 is outside the range of the UInt16 type.
//    Converted the Double value '0' to the UInt16 value 0.
//    Converted the Double value '9.113E-16' to the UInt16 value 0.
//    Converted the Double value '103.919' to the UInt16 value 104.
//    Converted the Double value '17834.191' to the UInt16 value 17834.
//    1.79769313486232E+308 is outside the range of the UInt16 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 UShort

For Each value As Double In values
   Try
      result = Convert.ToUInt16(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 UInt16 type.", value)
   End Try   
Next                                 
' The example displays the following output:
'    -1.79769313486232E+308 is outside the range of the UInt16 type.
'    -13800000000 is outside the range of the UInt16 type.
'    -1023.299 is outside the range of the UInt16 type.
'    -12.98 is outside the range of the UInt16 type.
'    Converted the Double value '0' to the UInt16 value 0.
'    Converted the Double value '9.113E-16' to the UInt16 value 0.
'    Converted the Double value '103.919' to the UInt16 value 104.
'    Converted the Double value '17834.191' to the UInt16 value 17834.
'    1.79769313486232E+308 is outside the range of the UInt16 type.
こちらもご覧ください

ToUInt16(Int64) ToUInt16(Int64) ToUInt16(Int64) ToUInt16(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 16 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 16-bit unsigned integer.

public:
 static System::UInt16 ToUInt16(long value);
[System.CLSCompliant(false)]
public static ushort ToUInt16 (long value);
static member ToUInt16 : int64 -> uint16
Public Shared Function ToUInt16 (value As Long) As UShort

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 16 ビット符号なし整数。A 16-bit unsigned integer that is equivalent to value.

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.

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

long[] numbers = { Int64.MinValue, -1, 0, 121, 340, Int64.MaxValue };
ushort result;

foreach (long number in numbers)
{
   try {
      result = Convert.ToUInt16(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 UInt16 type.",
                        number.GetType().Name, number);
   }
}
// The example displays the following output:
//    The Int64 value -9223372036854775808 is outside the range of the UInt16 type.
//    The Int64 value -1 is outside the range of the UInt16 type.
//    Converted the Int64 value '0' to the UInt16 value 0.
//    Converted the Int64 value '121' to the UInt16 value 121.
//    Converted the Int64 value '340' to the UInt16 value 340.
//    The Int64 value 9223372036854775807 is outside the range of the UInt16 type.
Dim numbers() As Long = { Int64.MinValue, -1, 0, 121, 340, Int64.MaxValue }
Dim result As UShort
For Each number As Long In numbers
   Try
      result = Convert.ToUInt16(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 UInt16 type.", _
                        number.GetType().Name, number)
   End Try
Next
' The example displays the following output:
'    The Int64 value -9223372036854775808 is outside the range of the UInt16 type.
'    The Int64 value -1 is outside the range of the UInt16 type.
'    Converted the Int64 value '0' to the UInt16 value 0.
'    Converted the Int64 value '121' to the UInt16 value 121.
'    Converted the Int64 value '340' to the UInt16 value 340.
'    The Int64 value 9223372036854775807 is outside the range of the UInt16 type.

ToUInt16(Object) ToUInt16(Object) ToUInt16(Object) ToUInt16(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 16 ビット符号なし整数に変換します。Converts the value of the specified object to a 16-bit unsigned integer.

public:
 static System::UInt16 ToUInt16(System::Object ^ value);
[System.CLSCompliant(false)]
public static ushort ToUInt16 (object value);
static member ToUInt16 : obj -> uint16
Public Shared Function ToUInt16 (value As Object) As UShort

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 16 ビット符号なし整数。valuenull の場合は 0。A 16-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.

次の例は、オブジェクト配列内の各要素を符号なし 16 ビット整数に変換しようとします。The following example attempts to convert each element in an object array to an unsigned 16-bit integer.

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

foreach (object value in values)
{
   try {
      result = Convert.ToUInt16(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 UInt16 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 UInt16 exists for the {0} value {1}.",
                        value.GetType().Name, value);
   }
}                           
// The example displays the following output:
//    Converted the Boolean value 'True' to the UInt16 value 1.
//    The Int32 value -12 is outside the range of the UInt16 type.
//    Converted the Int32 value '163' to the UInt16 value 163.
//    Converted the Int32 value '935' to the UInt16 value 935.
//    Converted the Char value 'x' to the UInt16 value 120.
//    No conversion to a UInt16 exists for the DateTime value 5/12/2009 12:00:00 AM.
//    Converted the String value '104' to the UInt16 value 104.
//    The String value 103.0 is not in a recognizable format.
//    The String value -1 is outside the range of the UInt16 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 UInt16 value 100.
   Dim values() As Object = { True, -12, 163, 935, "x"c, #5/12/2009#, _
                              "104", "103.0", "-1", _
                              "1.00e2", "One", 1.00e2}
   Dim result As UShort
   
   For Each value As Object In values
      Try
         result = Convert.ToUInt16(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 UInt16 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 an Int16 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 UInt16 value 1.
'    The Int32 value -12 is outside the range of the UInt16 type.
'    Converted the Int32 value '163' to the UInt16 value 163.
'    Converted the Int32 value '935' to the UInt16 value 935.
'    Converted the Char value 'x' to the UInt16 value 120.
'    No conversion to an Int16 exists for the DateTime value 5/12/2009 12:00:00 AM.
'    Converted the String value '104' to the UInt16 value 104.
'    The String value 103.0 is not in a recognizable format.
'    The String value -1 is outside the range of the UInt16 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 UInt16 value 100.

注釈

戻り値は呼び出しの結果、IConvertible.ToUInt16の基になる型のメソッドvalueします。The return value is the result of invoking the IConvertible.ToUInt16 method of the underlying type of value.

ToUInt16(Byte) ToUInt16(Byte) ToUInt16(Byte) ToUInt16(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 16 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 16-bit unsigned integer.

public:
 static System::UInt16 ToUInt16(System::Byte value);
[System.CLSCompliant(false)]
public static ushort ToUInt16 (byte value);
static member ToUInt16 : byte -> uint16
Public Shared Function ToUInt16 (value As Byte) As UShort

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 16 ビット符号なし整数。A 16-bit unsigned integer that is equivalent to value.

次の例は、バイト配列内の各要素を符号なし 16 ビット整数に変換します。The following example converts each element in a byte array to an unsigned 16-bit integer.

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

foreach (byte byteValue in bytes)
{
   result = Convert.ToUInt16(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 UInt16 value 0.
//       Converted the Byte value '14' to the UInt16 value 14.
//       Converted the Byte value '122' to the UInt16 value 122.
//       Converted the Byte value '255' to the UInt16 value 255.
Dim bytes() As Byte = { Byte.MinValue, 14, 122, Byte.MaxValue}
Dim result As UShort

For Each number As Byte In bytes
   result = Convert.ToUInt16(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 Byte value '0' to the UInt16 value 0.
'    Converted the Byte value '14' to the UInt16 value 14.
'    Converted the Byte value '122' to the UInt16 value 122.
'    Converted the Byte value '255' to the UInt16 value 255.

ToUInt16(Char) ToUInt16(Char) ToUInt16(Char) ToUInt16(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 16 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 16-bit unsigned integer.

public:
 static System::UInt16 ToUInt16(char value);
[System.CLSCompliant(false)]
public static ushort ToUInt16 (char value);
static member ToUInt16 : char -> uint16
Public Shared Function ToUInt16 (value As Char) As UShort

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 と等価な 16 ビット符号なし整数。The 16-bit unsigned integer equivalent to value.

次の例は、文字配列内の各要素を符号なし 16 ビット整数に変換します。The following example converts each element in a character array to an unsigned 16-bit integer.

char[] chars = { 'a', 'z', '\x0007', '\x03FF',
                 '\x7FFF', '\xFFFE' };
ushort result;

foreach (char ch in chars)
{
   try {
      result = Convert.ToUInt16(ch);
      Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.", 
                        ch.GetType().Name, ch, 
                        result.GetType().Name, result);
   }
   catch (OverflowException) {
      Console.WriteLine("Unable to convert u+{0} to a UInt16.",
                        ((int)ch).ToString("X4"));
   }
}   
// The example displays the following output:
//    Converted the Char value 'a' to the UInt16 value 97.
//    Converted the Char value 'z' to the UInt16 value 122.
//    Converted the Char value '' to the UInt16 value 7.
//    Converted the Char value '?' to the UInt16 value 1023.
//    Converted the Char value '?' to the UInt16 value 32767.
//    Converted the Char value '?' to the UInt16 value 65534.
Dim chars() As Char = { "a"c, "z"c, ChrW(7), ChrW(1023), _
                        ChrW(Short.MaxValue), ChrW(&hFFFE) }
Dim result As UShort
                        
For Each ch As Char in chars
   result = Convert.ToUInt16(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 UInt16 value 97.
'    Converted the Char value 'z' to the UInt16 value 122.
'    Converted the Char value '' to the UInt16 value 7.
'    Converted the Char value '?' to the UInt16 value 1023.
'    Converted the Char value '?' to the UInt16 value 32767.
'    Converted the Char value '?' to the UInt16 value 65534.

ToUInt16(DateTime) ToUInt16(DateTime) ToUInt16(DateTime) ToUInt16(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::UInt16 ToUInt16(DateTime value);
[System.CLSCompliant(false)]
public static ushort ToUInt16 (DateTime value);
static member ToUInt16 : DateTime -> uint16
Public Shared Function ToUInt16 (value As DateTime) As UShort

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.

ToUInt16(Boolean) ToUInt16(Boolean) ToUInt16(Boolean) ToUInt16(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 16 ビット符号なし整数に変換します。Converts the specified Boolean value to the equivalent 16-bit unsigned integer.

public:
 static System::UInt16 ToUInt16(bool value);
[System.CLSCompliant(false)]
public static ushort ToUInt16 (bool value);
static member ToUInt16 : bool -> uint16
Public Shared Function ToUInt16 (value As Boolean) As UShort

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、ブール値を変換します。truefalse16 ビットの符号なし整数にします。The following example converts the Boolean values true and false to unsigned 16-bit integers.

bool falseFlag = false;
bool trueFlag = true;

Console.WriteLine("{0} converts to {1}.", falseFlag,
                  Convert.ToInt16(falseFlag));
Console.WriteLine("{0} converts to {1}.", trueFlag,
                  Convert.ToUInt16(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.ToUInt16(falseFlag))
Console.WriteLine("{0} converts to {1}.", trueFlag, _
                  Convert.ToUInt16(trueFlag))
' The example displays the following output:
'       False converts to 0.
'       True converts to 1.

ToUInt16(Int16) ToUInt16(Int16) ToUInt16(Int16) ToUInt16(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 16 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 16-bit unsigned integer.

public:
 static System::UInt16 ToUInt16(short value);
[System.CLSCompliant(false)]
public static ushort ToUInt16 (short value);
static member ToUInt16 : int16 -> uint16
Public Shared Function ToUInt16 (value As Short) As UShort

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 16 ビット符号なし整数。A 16-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、符号なし 16 ビット整数の 16 ビット整数の配列内の各要素を変換しようとしています。The following example attempts to convert each element in a 16-bit integer array to an unsigned 16-bit integer.

short[] numbers = { Int16.MinValue, -132, 0, 121, 16103, Int16.MaxValue  };
ushort result;

foreach (short number in numbers)
{
   try {
      result = Convert.ToUInt16(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 UInt16 type.",
                        number.GetType().Name, number);
   }
}
// The example displays the following output:
//    The Int16 value -32768 is outside the range of the UInt16 type.
//    The Int16 value -132 is outside the range of the UInt16 type.
//    Converted the Int16 value '0' to the UInt16 value 0.
//    Converted the Int16 value '121' to the UInt16 value 121.
//    Converted the Int16 value '16103' to the UInt16 value 16103.
//    Converted the Int16 value '32767' to the UInt16 value 32767.
Dim numbers() As Short = { Int16.MinValue, -132, 0, 121, 16103, Int16.MaxValue }
Dim result As UShort

For Each number As Short In numbers
   Try
      result = Convert.ToUInt16(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 UInt16 type.", _
                        number.GetType().Name, number)
   End Try
Next
' The example displays the following output:
'    The Int16 value -32768 is outside the range of the UInt16 type.
'    The Int16 value -132 is outside the range of the UInt16 type.
'    Converted the Int16 value '0' to the UInt16 value 0.
'    Converted the Int16 value '121' to the UInt16 value 121.
'    Converted the Int16 value '16103' to the UInt16 value 16103.
'    Converted the Int16 value '32767' to the UInt16 value 32767.

ToUInt16(Int32) ToUInt16(Int32) ToUInt16(Int32) ToUInt16(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 16 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 16-bit unsigned integer.

public:
 static System::UInt16 ToUInt16(int value);
[System.CLSCompliant(false)]
public static ushort ToUInt16 (int value);
static member ToUInt16 : int -> uint16
Public Shared Function ToUInt16 (value As Integer) As UShort

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 16 ビット符号なし整数。A 16-bit unsigned integer that is equivalent to value.

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.

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

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

foreach (int number in numbers)
{
   try {
      result = Convert.ToUInt16(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 UInt16 type.",
                        number.GetType().Name, number);
   }
}
// The example displays the following output:
//    The Int32 value -2147483648 is outside the range of the UInt16 type.
//    The Int32 value -1 is outside the range of the UInt16 type.
//    Converted the Int32 value '0' to the UInt16 value 0.
//    Converted the Int32 value '121' to the UInt16 value 121.
//    Converted the Int32 value '340' to the UInt16 value 340.
//    The Int32 value 2147483647 is outside the range of the UInt16 type.
Dim numbers() As Integer = { Int32.MinValue, -1, 0, 121, 340, Int32.MaxValue }
Dim result As UShort

For Each number As Integer In numbers
   Try
      result = Convert.ToUInt16(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 UInt16 type.", _
                        number.GetType().Name, number)
   End Try
Next
' The example displays the following output:
'    The Int32 value -2147483648 is outside the range of the UInt16 type.
'    The Int32 value -1 is outside the range of the UInt16 type.
'    Converted the Int32 value '0' to the UInt16 value 0.
'    Converted the Int32 value '121' to the UInt16 value 121.
'    Converted the Int32 value '340' to the UInt16 value 340.
'    The Int32 value 2147483647 is outside the range of the UInt16 type.

ToUInt16(Decimal) ToUInt16(Decimal) ToUInt16(Decimal) ToUInt16(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 16 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 16-bit unsigned integer.

public:
 static System::UInt16 ToUInt16(System::Decimal value);
[System.CLSCompliant(false)]
public static ushort ToUInt16 (decimal value);
static member ToUInt16 : decimal -> uint16
Public Shared Function ToUInt16 (value As Decimal) As UShort

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 16 ビット符号なし整数に丸められた valuevalue, rounded to the nearest 16-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.

次の例の配列内の各要素を変換するDecimalを符号なし 16 ビット整数値。The following example converts each element in an array of Decimal values to an unsigned 16-bit integer.

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

foreach (decimal number in numbers)
{
   try {
      result = Convert.ToUInt16(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("{0} is outside the range of the UInt16 type.",
                        number);
   }   
}                                  
// The example displays the following output:
//    -79228162514264337593543950335 is outside the range of the UInt16 type.
//    -1034.23 is outside the range of the UInt16 type.
//    -12 is outside the range of the UInt16 type.
//    Converted the Decimal value '0' to the UInt16 value 0.
//    Converted the Decimal value '147' to the UInt16 value 147.
//    Converted the Decimal value '9214.16' to the UInt16 value 9214.
//    79228162514264337593543950335 is outside the range of the UInt16 type.
Dim values() As Decimal = { Decimal.MinValue, -1034.23d, -12d, 0d, 147d, _
                            9214.16d, Decimal.MaxValue }
Dim result As UShort

For Each value As Decimal In values
   Try
      result = Convert.ToUInt16(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 UInt16 type.", _
                        value)
   End Try   
Next                                  
' The example displays the following output:
'    -79228162514264337593543950335 is outside the range of the UInt16 type.
'    -1034.23 is outside the range of the UInt16 type.
'    -12 is outside the range of the UInt16 type.
'    Converted the Decimal value '0' to the UInt16 value 0.
'    Converted the Decimal value '147' to the UInt16 value 147.
'    Converted the Decimal value '9214.16' to the UInt16 value 9214.
'    79228162514264337593543950335 is outside the range of the UInt16 type.
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