Convert.ToByte Convert.ToByte Convert.ToByte Convert.ToByte Method

정의

지정된 값을 8비트 부호 없는 정수로 변환합니다.Converts a specified value to an 8-bit unsigned integer.

오버로드

ToByte(String) ToByte(String) ToByte(String) ToByte(String)

숫자의 지정된 문자열 표현을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the specified string representation of a number to an equivalent 8-bit unsigned integer.

ToByte(UInt16) ToByte(UInt16) ToByte(UInt16) ToByte(UInt16)

지정된 16비트 부호 없는 정수의 값을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified 16-bit unsigned integer to an equivalent 8-bit unsigned integer.

ToByte(UInt32) ToByte(UInt32) ToByte(UInt32) ToByte(UInt32)

지정된 32비트 부호 없는 정수의 값을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified 32-bit unsigned integer to an equivalent 8-bit unsigned integer.

ToByte(String, Int32) ToByte(String, Int32) ToByte(String, Int32) ToByte(String, Int32)

지정된 기수로 나타낸 숫자의 문자열 표현을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the string representation of a number in a specified base to an equivalent 8-bit unsigned integer.

ToByte(Object, IFormatProvider) ToByte(Object, IFormatProvider) ToByte(Object, IFormatProvider) ToByte(Object, IFormatProvider)

지정된 문화권별 서식 지정 정보를 사용하여, 지정된 개체의 값을 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified object to an 8-bit unsigned integer, using the specified culture-specific formatting information.

ToByte(String, IFormatProvider) ToByte(String, IFormatProvider) ToByte(String, IFormatProvider) ToByte(String, IFormatProvider)

지정된 문화권별 서식 지정 정보를 사용하여, 숫자의 지정된 문자열 표현을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the specified string representation of a number to an equivalent 8-bit unsigned integer, using specified culture-specific formatting information.

ToByte(Single) ToByte(Single) ToByte(Single) ToByte(Single)

지정된 단정밀도 부동 소수점 숫자 값을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified single-precision floating-point number to an equivalent 8-bit unsigned integer.

ToByte(UInt64) ToByte(UInt64) ToByte(UInt64) ToByte(UInt64)

지정된 64비트 부호 없는 정수의 값을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified 64-bit unsigned integer to an equivalent 8-bit unsigned integer.

ToByte(SByte) ToByte(SByte) ToByte(SByte) ToByte(SByte)

지정된 8비트 부호 있는 정수의 값을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified 8-bit signed integer to an equivalent 8-bit unsigned integer.

ToByte(Double) ToByte(Double) ToByte(Double) ToByte(Double)

지정된 배정밀도 부동 소수점 숫자 값을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified double-precision floating-point number to an equivalent 8-bit unsigned integer.

ToByte(Int64) ToByte(Int64) ToByte(Int64) ToByte(Int64)

지정된 64비트 부호 있는 정수의 값을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified 64-bit signed integer to an equivalent 8-bit unsigned integer.

ToByte(Byte) ToByte(Byte) ToByte(Byte) ToByte(Byte)

지정된 8비트 부호 없는 정수를 실제 변환 작업 없이 반환합니다.Returns the specified 8-bit unsigned integer; no actual conversion is performed.

ToByte(Char) ToByte(Char) ToByte(Char) ToByte(Char)

지정된 유니코드 문자의 값을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified Unicode character to the equivalent 8-bit unsigned integer.

ToByte(DateTime) ToByte(DateTime) ToByte(DateTime) ToByte(DateTime)

이 메서드를 호출하면 InvalidCastException이 항상 throw됩니다.Calling this method always throws InvalidCastException.

ToByte(Boolean) ToByte(Boolean) ToByte(Boolean) ToByte(Boolean)

지정된 부울 값을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the specified Boolean value to the equivalent 8-bit unsigned integer.

ToByte(Int16) ToByte(Int16) ToByte(Int16) ToByte(Int16)

지정된 16비트 부호 있는 정수의 값을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified 16-bit signed integer to an equivalent 8-bit unsigned integer.

ToByte(Int32) ToByte(Int32) ToByte(Int32) ToByte(Int32)

지정된 32비트 부호 있는 정수의 값을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified 32-bit signed integer to an equivalent 8-bit unsigned integer.

ToByte(Decimal) ToByte(Decimal) ToByte(Decimal) ToByte(Decimal)

지정된 10진수 값을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified decimal number to an equivalent 8-bit unsigned integer.

ToByte(Object) ToByte(Object) ToByte(Object) ToByte(Object)

지정된 개체의 값을 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified object to an 8-bit unsigned integer.

ToByte(String) ToByte(String) ToByte(String) ToByte(String)

숫자의 지정된 문자열 표현을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the specified string representation of a number to an equivalent 8-bit unsigned integer.

public:
 static System::Byte ToByte(System::String ^ value);
public static byte ToByte (string value);
static member ToByte : string -> byte
Public Shared Function ToByte (value As String) As Byte

매개 변수

value
String String String String

변환할 숫자가 포함된 문자열입니다.A string that contains the number to convert.

반환

value에 해당하는 8비트 부호 없는 정수이거나, valuenull이면 0입니다.An 8-bit unsigned integer that is equivalent to value, or zero if value is null.

예외

value가 선택적 부호와 숫자 시퀀스(0~9)로 구성되어 있지 않습니다.value does not consist of an optional sign followed by a sequence of digits (0 through 9).

valueMinValue보다 작거나 MaxValue보다 큰 숫자를 나타냅니다.value represents a number that is less than MinValue or greater than MaxValue.

예제

다음 예제에서는 문자열 배열을 정의 하 고 각 문자열을 변환 하려고 시도 Byte합니다.The following example defines a string array and attempts to convert each string to a Byte. 있는 동안을 null 문자열을 0으로 구문 분석 String.Empty throw를 FormatException입니다.Note that while a null string parses to zero, String.Empty throws a FormatException. 선행 및 후행 공백을 성공적으로 구문 분석, 기호, 통화 기호, 같은 서식 지정 하는 동안 그룹 구분 기호 또는 소수 구분 기호 하지 note도 합니다.Also note that while leading and trailing spaces parse successfully, formatting symbols, such as currency symbols, group separators, or decimal separators, do not.

using System;

public class Example
{
   public static void Main()
   {
      String[] values = { null, "", "0xC9", "C9", "101", "16.3", 
                          "$12", "$12.01", "-4", "1,032", "255",
                          "   16  " };
      foreach (var value in values) {
         try {
            byte number = Convert.ToByte(value);
            Console.WriteLine("'{0}' --> {1}", 
                              value == null ? "<null>" : value, number);
         }
         catch (FormatException) {
            Console.WriteLine("Bad Format: '{0}'", 
                              value == null ? "<null>" : value);
         }
         catch (OverflowException) {
            Console.WriteLine("OverflowException: '{0}'", value);
         }
      }
   }
}
// The example displays the following output:
//     '<null>' --> 0
//     Bad Format: ''
//     Bad Format: '0xC9'
//     Bad Format: 'C9'
//     '101' --> 101
//     Bad Format: '16.3'
//     Bad Format: '$12'
//     Bad Format: '$12.01'
//     OverflowException: '-4'
//     Bad Format: '1,032'
//     '255' --> 255
//     '   16  ' --> 16
Module Example
   Public Sub Main()
      Dim values() As String = { Nothing, "", "0xC9", "C9", "101", 
                                 "16.3", "$12", "$12.01", "-4", 
                                 "1,032", "255", "   16  " }
      For Each value In values
         Try 
            Dim number As Byte = Convert.ToByte(value)
            Console.WriteLine("'{0}' --> {1}", 
                              If(value Is Nothing, "<null>", value), number)
         Catch e As FormatException
            Console.WriteLine("Bad Format: '{0}'", 
                              If(value Is Nothing, "<null>", value))
         Catch e As OverflowException
            Console.WriteLine("OverflowException: '{0}'", value)
         End Try
      Next
   End Sub
End Module
' The example displays the following output:
'     '<null>' --> 0
'     Bad Format: ''
'     Bad Format: '0xC9'
'     Bad Format: 'C9'
'     '101' --> 101
'     Bad Format: '16.3'
'     Bad Format: '$12'
'     Bad Format: '$12.01'
'     OverflowException: '-4'
'     Bad Format: '1,032'
'     '255' --> 255
'     '   16  ' --> 16

설명

사용 하는 ToByte(String) 에 전달 하는 것과 같습니다 valueByte.Parse(String) 메서드.Using the ToByte(String) method is equivalent to passing value to the Byte.Parse(String) method. value는 현재 스레드 문화권의 서식 지정 규칙을 사용하여 해석됩니다.value is interpreted by using the formatting conventions of the current thread culture.

변환에 실패 하면 예외를 처리 하지 않으려는 경우 호출할 수 있습니다는 Byte.TryParse 메서드 대신 합니다.If you prefer not to handle an exception if the conversion fails, you can call the Byte.TryParse method instead. 반환 된 Boolean 변환이 성공 또는 실패 여부를 나타내는 값입니다.It returns a Boolean value that indicates whether the conversion succeeded or failed.

추가 정보

ToByte(UInt16) ToByte(UInt16) ToByte(UInt16) ToByte(UInt16)

중요

이 API는 CLS 규격이 아닙니다.

지정된 16비트 부호 없는 정수의 값을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified 16-bit unsigned integer to an equivalent 8-bit unsigned integer.

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

매개 변수

value
UInt16 UInt16 UInt16 UInt16

변환할 16비트 부호 없는 정수입니다.The 16-bit unsigned integer to convert.

반환

value에 해당하는 8비트 부호 없는 정수입니다.An 8-bit unsigned integer that is equivalent to value.

예외

예제

다음 예제에서는 부호 없는 16 비트 정수 배열로 변환 Byte 값입니다.The following example converts an array of unsigned 16-bit integers to Byte values.

ushort[] numbers = { UInt16.MinValue, 121, 340, UInt16.MaxValue };
byte result;
foreach (ushort number in numbers)
{
   try {
      result = Convert.ToByte(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 Byte type.", 
                        number.GetType().Name, number);
   }
}
// The example displays the following output:
//       Converted the UInt16 value 0 to the Byte value 0.
//       Converted the UInt16 value 121 to the Byte value 121.
//       The UInt16 value 340 is outside the range of the Byte type.
//       The UInt16 value 65535 is outside the range of the Byte type.
Dim numbers() As UShort = { UInt16.MinValue, 121, 340, UInt16.MaxValue }
Dim result As Byte
For Each number As UShort In numbers
   Try
      result = Convert.ToByte(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 Byte type.", _
                        number.GetType().Name, number)
   End Try
Next
' The example displays the following output:
'       Converted the UInt16 value 0 to the Byte value 0.
'       Converted the UInt16 value 121 to the Byte value 121.
'       The UInt16 value 340 is outside the range of the Byte type.
'       The UInt16 value 65535 is outside the range of the Byte type.

ToByte(UInt32) ToByte(UInt32) ToByte(UInt32) ToByte(UInt32)

중요

이 API는 CLS 규격이 아닙니다.

지정된 32비트 부호 없는 정수의 값을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified 32-bit unsigned integer to an equivalent 8-bit unsigned integer.

public:
 static System::Byte ToByte(System::UInt32 value);
[System.CLSCompliant(false)]
public static byte ToByte (uint value);
static member ToByte : uint32 -> byte
Public Shared Function ToByte (value As UInteger) As Byte

매개 변수

value
UInt32 UInt32 UInt32 UInt32

변환할 32비트 부호 없는 정수입니다.The 32-bit unsigned integer to convert.

반환

value에 해당하는 8비트 부호 없는 정수입니다.An 8-bit unsigned integer that is equivalent to value.

예외

예제

다음 예제에서는 부호 없는 정수의 배열을 변환 Byte 값입니다.The following example converts an array of unsigned integers to Byte values.

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

ToByte(String, Int32) ToByte(String, Int32) ToByte(String, Int32) ToByte(String, Int32)

지정된 기수로 나타낸 숫자의 문자열 표현을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the string representation of a number in a specified base to an equivalent 8-bit unsigned integer.

public:
 static System::Byte ToByte(System::String ^ value, int fromBase);
public static byte ToByte (string value, int fromBase);
static member ToByte : string * int -> byte
Public Shared Function ToByte (value As String, fromBase As Integer) As Byte

매개 변수

value
String String String String

변환할 숫자가 포함된 문자열입니다.A string that contains the number to convert.

fromBase
Int32 Int32 Int32 Int32

value에 지정된 숫자의 기수로서 2, 8, 10 또는 16이어야 합니다.The base of the number in value, which must be 2, 8, 10, or 16.

반환

value의 숫자에 해당하는 8비트 부호 없는 정수이거나, valuenull이면 0입니다.An 8-bit unsigned integer that is equivalent to the number in value, or 0 (zero) if value is null.

예외

fromBase가 2, 8, 10 또는 16이 아닙니다.fromBase is not 2, 8, 10, or 16.

또는-or- 밑수가 10이 아닌 부호 없는 숫자를 나타내고 음수 기호가 앞에 붙는 value입니다.value, which represents a non-base 10 unsigned number, is prefixed with a negative sign.

valuefromBase에 지정된 밑에서 유효한 숫자가 아닌 문자를 포함합니다.value contains a character that is not a valid digit in the base specified by fromBase. 예외 메시지는 value의 첫 문자가 유효하지 않은 경우 변환할 숫자가 없음을 나타내고, 유효한 경우 value에 잘못된 후행 문자가 있다고 나타냅니다.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.

기수가 10인 부호 없는 숫자를 나타내는 value의 접두사가 음수 기호인 경우value, which represents a base 10 unsigned number, is prefixed with a negative sign.

또는-or- valueMinValue보다 작거나 MaxValue보다 큰 숫자를 나타냅니다.value represents a number that is less than MinValue or greater than MaxValue.

예제

또는 다음 예제에서는 문자열의 배열을 이진, 8 진수, 10 진수 및 16 진수 값의 표현으로 해석 하려고 합니다.The following example alternately attempts to interpret an array of strings as the representation of binary, octal, decimal, and hexadecimal values.

using System;

public class Example
{
   public static void Main()
   {
      int[] bases = { 2, 8, 10, 16 };
      string[] values = { "-1", "1", "08", "0F", "11" , "12", "30",                
                          "101", "255", "FF", "10000000", "80" };
      byte number;
      foreach (int numBase in bases)
      {
         Console.WriteLine("Base {0}:", numBase);
         foreach (string value in values)
         {
            try {
               number = Convert.ToByte(value, numBase);
               Console.WriteLine("   Converted '{0}' to {1}.", value, number);
            }   
            catch (FormatException) {
               Console.WriteLine("   '{0}' is not in the correct format for a base {1} byte value.", 
                                 value, numBase);
            }                     
            catch (OverflowException) {
               Console.WriteLine("   '{0}' is outside the range of the Byte type.", value);
            }   
            catch (ArgumentException) {
               Console.WriteLine("   '{0}' is invalid in base {1}.", value, numBase);
            }
         }                                 
      } 
   }
}
// The example displays the following output:
//    Base 2:
//       '-1' is invalid in base 2.
//       Converted '1' to 1.
//       '08' is not in the correct format for a base 2 conversion.
//       '0F' is not in the correct format for a base 2 conversion.
//       Converted '11' to 3.
//       '12' is not in the correct format for a base 2 conversion.
//       '30' is not in the correct format for a base 2 conversion.
//       Converted '101' to 5.
//       '255' is not in the correct format for a base 2 conversion.
//       'FF' is not in the correct format for a base 2 conversion.
//       Converted '10000000' to 128.
//       '80' is not in the correct format for a base 2 conversion.
//    Base 8:
//       '-1' is invalid in base 8.
//       Converted '1' to 1.
//       '08' is not in the correct format for a base 8 conversion.
//       '0F' is not in the correct format for a base 8 conversion.
//       Converted '11' to 9.
//       Converted '12' to 10.
//       Converted '30' to 24.
//       Converted '101' to 65.
//       Converted '255' to 173.
//       'FF' is not in the correct format for a base 8 conversion.
//       '10000000' is outside the range of the Byte type.
//       '80' is not in the correct format for a base 8 conversion.
//    Base 10:
//       '-1' is outside the range of the Byte type.
//       Converted '1' to 1.
//       Converted '08' to 8.
//       '0F' is not in the correct format for a base 10 conversion.
//       Converted '11' to 11.
//       Converted '12' to 12.
//       Converted '30' to 30.
//       Converted '101' to 101.
//       Converted '255' to 255.
//       'FF' is not in the correct format for a base 10 conversion.
//       '10000000' is outside the range of the Byte type.
//       Converted '80' to 80.
//    Base 16:
//       '-1' is invalid in base 16.
//       Converted '1' to 1.
//       Converted '08' to 8.
//       Converted '0F' to 15.
//       Converted '11' to 17.
//       Converted '12' to 18.
//       Converted '30' to 48.
//       '101' is outside the range of the Byte type.
//       '255' is outside the range of the Byte type.
//       Converted 'FF' to 255.
//       '10000000' is outside the range of the Byte type.
//       Converted '80' to 128.
Module Example
   Public Sub Main()
      Dim bases() As Integer = { 2, 8, 10, 16 }
      Dim values() As String = { "-1", "1", "08", "0F", "11" , "12", "30", _                
                                  "101", "255", "FF", "10000000", "80" }
      Dim number As Byte
      For Each base As Integer In bases
         Console.WriteLine("Base {0}:", base)
         For Each value As String In values
            Try
               number = Convert.ToByte(value, base)
               Console.WriteLine("   Converted '{0}' to {1}.", value, number)
            Catch e As FormatException
               Console.WriteLine("   '{0}' is not in the correct format for a base {1} conversion.", _
                                 value, base)
            Catch e As OverflowException
               Console.WriteLine("   '{0}' is outside the range of the Byte type.", value)
            Catch e As ArgumentException
               Console.WriteLine("   '{0}' is invalid in base {1}.", value, base)
            End Try   
         Next                                 
      Next 
   End Sub
End Module
' The example displays the following output:
'    Base 2:
'       '-1' is invalid in base 2.
'       Converted '1' to 1.
'       '08' is not in the correct format for a base 2 conversion.
'       '0F' is not in the correct format for a base 2 conversion.
'       Converted '11' to 3.
'       '12' is not in the correct format for a base 2 conversion.
'       '30' is not in the correct format for a base 2 conversion.
'       Converted '101' to 5.
'       '255' is not in the correct format for a base 2 conversion.
'       'FF' is not in the correct format for a base 2 conversion.
'       Converted '10000000' to 128.
'       '80' is not in the correct format for a base 2 conversion.
'    Base 8:
'       '-1' is invalid in base 8.
'       Converted '1' to 1.
'       '08' is not in the correct format for a base 8 conversion.
'       '0F' is not in the correct format for a base 8 conversion.
'       Converted '11' to 9.
'       Converted '12' to 10.
'       Converted '30' to 24.
'       Converted '101' to 65.
'       Converted '255' to 173.
'       'FF' is not in the correct format for a base 8 conversion.
'       '10000000' is outside the range of the Byte type.
'       '80' is not in the correct format for a base 8 conversion.
'    Base 10:
'       '-1' is outside the range of the Byte type.
'       Converted '1' to 1.
'       Converted '08' to 8.
'       '0F' is not in the correct format for a base 10 conversion.
'       Converted '11' to 11.
'       Converted '12' to 12.
'       Converted '30' to 30.
'       Converted '101' to 101.
'       Converted '255' to 255.
'       'FF' is not in the correct format for a base 10 conversion.
'       '10000000' is outside the range of the Byte type.
'       Converted '80' to 80.
'    Base 16:
'       '-1' is invalid in base 16.
'       Converted '1' to 1.
'       Converted '08' to 8.
'       Converted '0F' to 15.
'       Converted '11' to 17.
'       Converted '12' to 18.
'       Converted '30' to 48.
'       '101' is outside the range of the Byte type.
'       '255' is outside the range of the Byte type.
'       Converted 'FF' to 255.
'       '10000000' is outside the range of the Byte type.
'       Converted '80' to 128.

설명

하는 경우 fromBase 16 이면로 지정한 숫자를 붙일 수 있습니다는 value "0x" 또는 "0x"를 사용 하 여 매개 변수입니다.If fromBase is 16, you can prefix the number specified by the value parameter with "0x" or "0X".

때문에 합니다 Byte 데이터 형식은 부호 없는 값만 지원 합니다 ToByte(String, Int32) 가정 메서드 value 서명 되지 않은 이진 표현을 사용 하 여 표현 됩니다.Because the Byte data type supports unsigned values only, the ToByte(String, Int32) method assumes that value is expressed using unsigned binary representation. 즉, 모든 8 비트 숫자 값을 나타내는 데 사용 되며 및 부호 비트를 사용할 수 없는 합니다.In other words, all eight bits are used to represent the numeric value, and a sign bit is absent. 결과적으로, 것이 코드는 부호 있는 바이트 값의 범위를 벗어났습니다. 쓸 수는 Byte 데이터 형식을 변환할는 Byte 메서드에서 예외를 throw 하지 않고 값입니다.As a result, it is possible to write code in which a signed byte value that is out of the range of the Byte data type is converted to a Byte value without the method throwing an exception. 다음 예제에서는 변환 MinValue 해당 16 진수 문자열 표현으로 변환한 다음 호출 하는 ToByte(String, Int32) 메서드.The following example converts MinValue to its hexadecimal string representation, and then calls the ToByte(String, Int32) method. 메서드는 예외를 throw 하는 대신 메시지를 표시 "128 0x80 변환 합니다."Instead of throwing an exception, the method displays the message, "0x80 converts to 128."

// Create a hexadecimal value out of range of the Byte type.
string value = SByte.MinValue.ToString("X");
// Convert it back to a number.
try
{
   byte number = Convert.ToByte(value, 16);
   Console.WriteLine("0x{0} converts to {1}.", value, number);
}   
catch (OverflowException)
{
   Console.WriteLine("Unable to convert '0x{0}' to a byte.", value);
}   
' Create a hexadecimal value out of range of the Byte type.
Dim value As String = SByte.MinValue.ToString("X")
' Convert it back to a number.
Try
   Dim number As Byte = Convert.ToByte(value, 16)
   Console.WriteLine("0x{0} converts to {1}.", value, number)
Catch e As OverflowException
   Console.WriteLine("Unable to convert '0x{0}' to a byte.", value)
End Try   

이항 연산 또는 숫자 변환을 수행할 때 항상 특정 값을 해석 하는 메서드 또는 연산자가 적절 한 숫자 표현이 사용 되는 확인 하려면 개발자의 책임입니다.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. 다음 예제에서는 16 진수 문자열 표현으로 변환할 때 이진 표현을 서명 되지 않은 메서드를 잘못 사용 되지 않게에 대 한 기술 중 하나를 보여 줍니다는 Byte 값입니다.The following example illustrates one technique for ensuring that the method does not inappropriately use unsigned binary representation when it converts a hexadecimal string representation to a Byte value. 예제 값을 나타내는지 부호 있는 또는 부호 없는 정수 값을 문자열 표현으로 변환 하는 동안 결정 합니다.The example determines whether a value represents a signed or an unsigned integer while it is converting that value to its string representation. 값을 다시로 변환 하는 경우는 Byte 원래 값을 부호 있는 정수 했는지를 확인할 값입니다.When the example converts the value back to a Byte value, it checks whether the original value was a signed integer. 따라서 및 (나타내는 값이 음수 부호 없는 이진 표현 하는 대신 보수인 두는)의 상위 비트가 설정 된 경우 메서드는 예외를 throw 합니다.If so, and if its high-order bit is set (which indicates that the value is negative and that it uses two's complement instead of unsigned binary representation), the method throws an exception.

// Create a negative hexadecimal value out of range of the Byte type.
sbyte sourceNumber = SByte.MinValue;
bool isSigned = Math.Sign((sbyte)sourceNumber.GetType().GetField("MinValue").GetValue(null)) == -1;
string value = sourceNumber.ToString("X");
byte targetNumber;
try
{
   targetNumber = Convert.ToByte(value, 16);
   if (isSigned && ((targetNumber & 0x80) != 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 byte.", value);
} 
// Displays the following to the console:
//    Unable to convert '0x80' to an unsigned byte.     
' Create a negative hexadecimal value out of range of the Byte type.
Dim sourceNumber As SByte = SByte.MinValue
Dim isSigned As Boolean = Math.Sign(sourceNumber.MinValue) = -1
Dim value As String = sourceNumber.ToString("X")
Dim targetNumber As Byte
Try
   targetNumber = Convert.ToByte(value, 16)
   If isSigned And ((targetNumber And &H80) <> 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 byte.", value)
End Try 
' Displays the following to the console:
'    Unable to convert '0x80' to an unsigned byte.     

ToByte(Object, IFormatProvider) ToByte(Object, IFormatProvider) ToByte(Object, IFormatProvider) ToByte(Object, IFormatProvider)

지정된 문화권별 서식 지정 정보를 사용하여, 지정된 개체의 값을 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified object to an 8-bit unsigned integer, using the specified culture-specific formatting information.

public:
 static System::Byte ToByte(System::Object ^ value, IFormatProvider ^ provider);
public static byte ToByte (object value, IFormatProvider provider);
static member ToByte : obj * IFormatProvider -> byte
Public Shared Function ToByte (value As Object, provider As IFormatProvider) As Byte

매개 변수

value
Object Object Object Object

IConvertible 인터페이스를 구현하는 개체An object that implements the IConvertible interface.

provider
IFormatProvider IFormatProvider IFormatProvider IFormatProvider

문화권별 서식 지정 정보를 제공하는 개체입니다.An object that supplies culture-specific formatting information.

반환

value에 해당하는 8비트 부호 없는 정수이거나, valuenull이면 0입니다.An 8-bit unsigned integer that is equivalent to value, or zero if value is null.

예외

valueByte 값에 대한 속성 형식이 아닙니다.value is not in the property format for a Byte value.

valueIConvertible를 구현하지 않습니다.value does not implement IConvertible.

또는-or- value에서 Byte 형식으로의 변환은 지원되지 않습니다.Conversion from value to the Byte type is not supported.

valueMinValue보다 작거나 MaxValue보다 큰 숫자를 나타냅니다.value represents a number that is less than MinValue or greater than MaxValue.

예제

다음 예제에서는 ByteString 인터페이스를 구현하는 IConvertible 클래스를 정의합니다.The following example defines a ByteString class that implements the IConvertible interface. 클래스 모두 부호 있는 정수와 부호 없는 바이트 값을 나타낼 수 있도록 로그인 필드와 함께 하는 바이트 값의 문자열 표현을 저장 합니다.The class stores the string representation of a byte value along with a sign field, so that it is able to represent both signed and unsigned byte values.

using System;
using System.Globalization;

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

public struct ByteString : IConvertible
{
   private SignBit signBit;
   private string byteString;
   
   public SignBit Sign
   { 
      set { signBit = value; }
      get { return signBit; }
   }

   public string Value
   { 
      set {
         if (value.Trim().Length > 2)
            throw new ArgumentException("The string representation of a byte cannot have more than two characters.");
         else
            byteString = value;
      }
      get { return byteString; }
   }
   
   // IConvertible implementations.
   public TypeCode GetTypeCode() {
      return TypeCode.Object;
   }
   
   public bool ToBoolean(IFormatProvider provider)
   {
      if (signBit == SignBit.Zero)
         return false;
      else
         return true;
   } 
   
   public byte ToByte(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         throw new OverflowException(String.Format("{0} is out of range of the Byte type.", Convert.ToSByte(byteString, 16)));
      else
         return Byte.Parse(byteString, NumberStyles.HexNumber);
   }
   
   public char ToChar(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative) { 
         throw new OverflowException(String.Format("{0} is out of range of the Char type.", Convert.ToSByte(byteString, 16)));
      }
      else {
         byte byteValue = Byte.Parse(this.byteString, NumberStyles.HexNumber);
         return Convert.ToChar(byteValue);
      }                
   } 
   
   public DateTime ToDateTime(IFormatProvider provider)
   {
      throw new InvalidCastException("ByteString to DateTime conversion is not supported.");
   }
   
   public decimal ToDecimal(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative) 
      {
         sbyte byteValue = SByte.Parse(byteString, NumberStyles.HexNumber);
         return Convert.ToDecimal(byteValue);
      }
      else 
      {
         byte byteValue = Byte.Parse(byteString, NumberStyles.HexNumber);
         return Convert.ToDecimal(byteValue);
      }
   }
   
   public double ToDouble(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         return Convert.ToDouble(SByte.Parse(byteString, NumberStyles.HexNumber));
      else
         return Convert.ToDouble(Byte.Parse(byteString, NumberStyles.HexNumber));
   }   
   
   public short ToInt16(IFormatProvider provider) 
   {
      if (signBit == SignBit.Negative)
         return Convert.ToInt16(SByte.Parse(byteString, NumberStyles.HexNumber));
      else
         return Convert.ToInt16(Byte.Parse(byteString, NumberStyles.HexNumber));
   }
   
   public int ToInt32(IFormatProvider provider) 
   {
      if (signBit == SignBit.Negative)
         return Convert.ToInt32(SByte.Parse(byteString, NumberStyles.HexNumber));
      else
         return Convert.ToInt32(Byte.Parse(byteString, NumberStyles.HexNumber));
   }
   
   public long ToInt64(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         return Convert.ToInt64(SByte.Parse(byteString, NumberStyles.HexNumber));
      else
         return Convert.ToInt64(Byte.Parse(byteString, NumberStyles.HexNumber));
   }
   
   public sbyte ToSByte(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         try {
            return Convert.ToSByte(Byte.Parse(byteString, NumberStyles.HexNumber));
         }
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is outside the range of the SByte type.", 
                                                   Byte.Parse(byteString, NumberStyles.HexNumber)), e);
         }
      else   
         return SByte.Parse(byteString, NumberStyles.HexNumber);
   }

   public float ToSingle(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         return Convert.ToSingle(SByte.Parse(byteString, NumberStyles.HexNumber));
      else
         return Convert.ToSingle(Byte.Parse(byteString, NumberStyles.HexNumber));
   }

   public string ToString(IFormatProvider provider)
   {
      return "0x" + this.byteString;
   }
   
   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(ByteString).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.", 
                                                   SByte.Parse(byteString, NumberStyles.HexNumber)));
      else
         return Convert.ToUInt16(Byte.Parse(byteString, 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.", 
                                                   SByte.Parse(byteString, NumberStyles.HexNumber)));
      else
         return Convert.ToUInt32(Byte.Parse(byteString, NumberStyles.HexNumber));
   }
   
   public UInt64 ToUInt64(IFormatProvider provider) 
   {
      if (signBit == SignBit.Negative)
         throw new OverflowException(String.Format("{0} is outside the range of the UInt64 type.", 
                                                   SByte.Parse(byteString, NumberStyles.HexNumber)));
      else
         return Convert.ToUInt64(Byte.Parse(byteString, NumberStyles.HexNumber));
   }
}
Imports System.Globalization

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

Public Structure ByteString : Implements IConvertible
   Private signBit As SignBit
   Private byteString 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 > 2 Then
            Throw New ArgumentException("The string representation of a byte cannot have more than two characters.")
         Else
            byteString = value
         End If   
      End Set
      Get
         Return byteString
      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
      If signBit = SignBit.Zero Then
         Return False
      Else
         Return True
      End If
   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.ToSByte(byteString, 16))) 
      Else
         Return Byte.Parse(byteString, NumberStyles.HexNumber)
      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.ToSByte(byteString, 16)))
      Else
         Dim byteValue As Byte = Byte.Parse(Me.byteString, NumberStyles.HexNumber)
         Return Convert.ToChar(byteValue)
      End If                
   End Function 
   
   Public Function ToDateTime(provider As IFormatProvider) As Date _
                   Implements IConvertible.ToDateTime
      Throw New InvalidCastException("ByteString 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 byteValue As SByte = SByte.Parse(byteString, NumberStyles.HexNumber)
         Return Convert.ToDecimal(byteValue)
      Else
         Dim byteValue As Byte = Byte.Parse(byteString, NumberStyles.HexNumber)
         Return Convert.ToDecimal(byteValue)
      End If
   End Function
   
   Public Function ToDouble(provider As IFormatProvider) As Double _
                   Implements IConvertible.ToDouble
      If signBit = signBit.Negative Then
         Return Convert.ToDouble(SByte.Parse(byteString, NumberStyles.HexNumber))
      Else
         Return Convert.ToDouble(Byte.Parse(byteString, NumberStyles.HexNumber))
      End If   
   End Function   
   
   Public Function ToInt16(provider As IFormatProvider) As Int16 _
                   Implements IConvertible.ToInt16
      If signBit = signBit.Negative Then
         Return Convert.ToInt16(SByte.Parse(byteString, NumberStyles.HexNumber))
      Else
         Return Convert.ToInt16(Byte.Parse(byteString, NumberStyles.HexNumber))
      End If   
   End Function
   
   Public Function ToInt32(provider As IFormatProvider) As Int32 _
                   Implements IConvertible.ToInt32
      If signBit = signBit.Negative Then
         Return Convert.ToInt32(SByte.Parse(byteString, NumberStyles.HexNumber))
      Else
         Return Convert.ToInt32(Byte.Parse(byteString, 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(SByte.Parse(byteString, NumberStyles.HexNumber))
      Else
         Return Convert.ToInt64(Byte.Parse(byteString, NumberStyles.HexNumber))
      End If   
   End Function
   
   Public Function ToSByte(provider As IFormatProvider) As SByte _
                   Implements IConvertible.ToSByte
      If signBit = SignBit.Positive Then
         Try
            Return Convert.ToSByte(Byte.Parse(byteString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is outside the range of the SByte type.", _
                                                   Byte.Parse(byteString, NumberStyles.HexNumber)), e)   
         End Try
      Else
         Return SByte.Parse(byteString, NumberStyles.HexNumber)
      End If
   End Function

   Public Function ToSingle(provider As IFormatProvider) As Single _
                   Implements IConvertible.ToSingle
      If signBit = signBit.Negative Then
         Return Convert.ToSingle(SByte.Parse(byteString, NumberStyles.HexNumber))
      Else
         Return Convert.ToSingle(Byte.Parse(byteString, NumberStyles.HexNumber))
      End If   
   End Function

   Public Overloads Function ToString(provider As IFormatProvider) As String _
                   Implements IConvertible.ToString
      Return Me.byteString
   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(ByteString).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.", _
                                                   SByte.Parse(byteString, NumberStyles.HexNumber)))
      Else
         Return Convert.ToUInt16(Byte.Parse(byteString, NumberStyles.HexNumber))
      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.", _
                                                   SByte.Parse(byteString, NumberStyles.HexNumber)))
      Else
         Return Convert.ToUInt32(Byte.Parse(byteString, NumberStyles.HexNumber))
      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.", _
                                                   SByte.Parse(byteString, NumberStyles.HexNumber)))
      Else
         Return Convert.ToUInt64(Byte.Parse(byteString, NumberStyles.HexNumber))
      End If   
   End Function
   
End Structure

다음 예제에서는 여러 인스턴스화합니다 ByteString 개체와 호출 된 ToByte(Object, IFormatProvider) 바이트 값으로 변환 하는 방법.The following example instantiates several ByteString objects and calls the ToByte(Object, IFormatProvider) method to convert them to byte values. 하는 방법을 보여 줍니다 합니다 ToByte(Object, IFormatProvider) 메서드 호출을 래핑한는 IConvertible.ToByte 변환할 개체의 메서드.It illustrates that the ToByte(Object, IFormatProvider) method wraps a call to the IConvertible.ToByte method of the object to be converted.

public class Class1
{
   public static void Main()
   {
      byte positiveByte = 216;
      sbyte negativeByte = -101;
      
      
      ByteString positiveString = new ByteString();
      positiveString.Sign = (SignBit) Math.Sign(positiveByte);
      positiveString.Value = positiveByte.ToString("X2");
      
      ByteString negativeString = new ByteString();
      negativeString.Sign = (SignBit) Math.Sign(negativeByte);
      negativeString.Value = negativeByte.ToString("X2");
      
      try {
         Console.WriteLine("'{0}' converts to {1}.", positiveString.Value, Convert.ToByte(positiveString));
      }
      catch (OverflowException) {
         Console.WriteLine("0x{0} is outside the range of the Byte type.", positiveString.Value);
      }

      try {
         Console.WriteLine("'{0}' converts to {1}.", negativeString.Value, Convert.ToByte(negativeString));
      }
      catch (OverflowException) {
         Console.WriteLine("0x{0} is outside the range of the Byte type.", negativeString.Value);
      }   
   }
}
// The example displays the following output:
//       'D8' converts to 216.
//       0x9B is outside the range of the Byte type.
Module modMain
   Public Sub Main()
      Dim positiveByte As Byte = 216
      Dim negativeByte As SByte = -101
      
      
      Dim positiveString As New ByteString()
      positiveString.Sign = CType(Math.Sign(positiveByte), SignBit)
      positiveString.Value = positiveByte.ToString("X2")
      
      Dim negativeString As New ByteString()
      negativeString.Sign = CType(Math.Sign(negativeByte), SignBit)
      negativeString.Value = negativeByte.ToString("X2")
      
      Try
         Console.WriteLine("'{0}' converts to {1}.", positiveString.Value, Convert.ToByte(positiveString))
      Catch e As OverflowException
         Console.WriteLine("0x{0} is outside the range of the Byte type.", positiveString.Value)
      End Try

      Try
         Console.WriteLine("'{0}' converts to {1}.", negativeString.Value, Convert.ToByte(negativeString))
      Catch e As OverflowException
         Console.WriteLine("0x{0} is outside the range of the Byte type.", negativeString.Value)
      End Try   
   End Sub
End Module
' The example dosplays the following output:
'       'D8' converts to 216.
'       0x9B is outside the range of the Byte type.

설명

provider 사용자의 내용에 대 한 문화권별 형식 변환 정보를 지정할 수 있게 value합니다.provider enables the user to specify culture-specific conversion information about the contents of value. 기본 형식을 무시 provider하지만 경우에 매개 변수를 사용할 수 있습니다 value 구현 하는 사용자 정의 형식인는 IConvertible 인터페이스입니다.The base types ignore provider; however, the parameter may be used if value is a user-defined type that implements the IConvertible interface.

ToByte(String, IFormatProvider) ToByte(String, IFormatProvider) ToByte(String, IFormatProvider) ToByte(String, IFormatProvider)

지정된 문화권별 서식 지정 정보를 사용하여, 숫자의 지정된 문자열 표현을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the specified string representation of a number to an equivalent 8-bit unsigned integer, using specified culture-specific formatting information.

public:
 static System::Byte ToByte(System::String ^ value, IFormatProvider ^ provider);
public static byte ToByte (string value, IFormatProvider provider);
static member ToByte : string * IFormatProvider -> byte
Public Shared Function ToByte (value As String, provider As IFormatProvider) As Byte

매개 변수

value
String String String String

변환할 숫자가 포함된 문자열입니다.A string that contains the number to convert.

provider
IFormatProvider IFormatProvider IFormatProvider IFormatProvider

문화권별 서식 지정 정보를 제공하는 개체입니다.An object that supplies culture-specific formatting information.

반환

value에 해당하는 8비트 부호 없는 정수이거나, valuenull이면 0입니다.An 8-bit unsigned integer that is equivalent to value, or zero if value is null.

예외

value가 선택적 부호와 숫자 시퀀스(0~9)로 구성되어 있지 않습니다.value does not consist of an optional sign followed by a sequence of digits (0 through 9).

valueMinValue보다 작거나 MaxValue보다 큰 숫자를 나타냅니다.value represents a number that is less than MinValue or greater than MaxValue.

예제

다음 예제에서는 사용자 지정 NumberFormatInfo 양수 부호 "neg"에 대 한 호출에서는 "pos"와 음수 기호를 정의 하는 개체는 ToByte(String, IFormatProvider) 메서드.The following example creates a custom NumberFormatInfo object that defines the positive sign as "pos" and the negative sign as "neg", which it uses in calls to the ToByte(String, IFormatProvider) method. 그런 다음 호출 하는 ToByte(String, IFormatProvider) 메서드는 문자열 배열의 각 요소를 반복 해 서는 Byte 값입니다.It then calls the ToByte(String, IFormatProvider) method repeatedly to convert each element in a string array to a Byte value.

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 unsigned bytes.
      NumberFormatInfo provider = new NumberFormatInfo();

      // These properties affect the conversion.
      provider.PositiveSign = "pos ";
      provider.NegativeSign = "neg ";

      // This property does not affect the conversion.
      // The input string cannot have a decimal separator.
      provider.NumberDecimalSeparator = ".";
      
      // Define an array of numeric strings.
      string[] numericStrings = { "234", "+234", "pos 234", "234.", "255", 
                                  "256", "-1" };

      foreach (string numericString in numericStrings)
      {
         Console.Write("'{0,-8}' ->   ", numericString);
         try {
            byte number = Convert.ToByte(numericString, provider);
            Console.WriteLine(number);
         }   
         catch (FormatException) {
            Console.WriteLine("Incorrect Format");
         }                             
         catch (OverflowException) {
            Console.WriteLine("Overflows a Byte");
         }   
      }
   }
}
// The example displays the following output:
//       '234     ' ->   234
//       '+234    ' ->   Incorrect Format
//       'pos 234 ' ->   234
//       '234.    ' ->   Incorrect Format
//       '255     ' ->   255
//       '256     ' ->   Overflows a Byte
//       '-1      ' ->   Incorrect Format
Imports System.Globalization

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

         ' This property does not affect the conversion.
         ' The input string cannot have a decimal separator.
         .NumberDecimalSeparator = "."
      End With
      
      ' Define an array of numeric strings.
      Dim numericStrings() As String = { "234", "+234", "pos 234", "234.", _
                                         "255", "256", "-1" }

      For Each numericString As String In numericStrings
         Console.Write("'{0,-8}' ->   ", numericString)
         Try
            Dim number As Byte = Convert.ToByte(numericString, provider)
            Console.WriteLine(number)
         Catch ex As FormatException
            Console.WriteLine("Incorrect Format")                          
         Catch ex As OverflowException
            Console.WriteLine("Overflows a Byte")
         End Try   
      Next
   End Sub   
End Module 
' The example displays the following output:
'       '234     ' ->   234
'       '+234    ' ->   Incorrect Format
'       'pos 234 ' ->   234
'       '234.    ' ->   Incorrect Format
'       '255     ' ->   255
'       '256     ' ->   Overflows a Byte
'       '-1      ' ->   Incorrect Format

설명

provider IFormatProvider 인스턴스를 가져오는 NumberFormatInfo 개체입니다.provider is an IFormatProvider instance that obtains a NumberFormatInfo object. 합니다 NumberFormatInfo 개체의 형식에 대 한 문화권별 형식 정보를 제공 value합니다.The NumberFormatInfo object provides culture-specific information about the format of value. 하는 경우 provider 됩니다 nullNumberFormatInfo 개체가 현재 문화권이 사용 됩니다.If provider is null, the NumberFormatInfo object for the current culture is used.

변환에 실패 하면 예외를 처리 하지 않으려는 경우 호출할 수 있습니다는 Byte.TryParse 메서드 대신 합니다.If you prefer not to handle an exception if the conversion fails, you can call the Byte.TryParse method instead. 반환 된 Boolean 변환이 성공 또는 실패 여부를 나타내는 값입니다.It returns a Boolean value that indicates whether the conversion succeeded or failed.

추가 정보

ToByte(Single) ToByte(Single) ToByte(Single) ToByte(Single)

지정된 단정밀도 부동 소수점 숫자 값을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified single-precision floating-point number to an equivalent 8-bit unsigned integer.

public:
 static System::Byte ToByte(float value);
public static byte ToByte (float value);
static member ToByte : single -> byte
Public Shared Function ToByte (value As Single) As Byte

매개 변수

value
Single Single Single Single

단정밀도 부동 소수점 숫자입니다.A single-precision floating-point number.

반환

가장 가까운 8비트 부호 없는 정수로 반올림된 value입니다.value, rounded to the nearest 8-bit unsigned integer. value가 두 정수 사이의 값이면 짝수 값을 반환합니다. 예를 들어 4.5는 4로, 5.5는 6으로 변환됩니다.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.

예외

valueMaxValue보다 크거나 MinValue보다 작습니다.value is greater than MaxValue or less than MinValue.

예제

다음 예제는 Single 값을 Byte입니다.The following example converts a Single value to a Byte.

public:
   void ConvertByteSingle( Byte byteVal )
   {
      float floatVal;
      
      // Byte to float conversion will not overflow.
      floatVal = System::Convert::ToSingle( byteVal );
      System::Console::WriteLine( "The Byte as a float is {0}.",
         floatVal );
      
      // Float to Byte conversion can overflow.
      try
      {
         byteVal = System::Convert::ToByte( floatVal );
         System::Console::WriteLine( "The float as a Byte is {0}.",
         byteVal );
      }
      catch ( System::OverflowException^ ) 
      {
         System::Console::WriteLine(
            "The float value is too large for a Byte." );
      }
   }
public void ConvertByteSingle(byte byteVal) {
	float floatVal;

	// Byte to float conversion will not overflow.
	floatVal = System.Convert.ToSingle(byteVal);
	System.Console.WriteLine("The byte as a float is {0}.",
		floatVal);

	// Float to byte conversion can overflow.
	try {
		byteVal = System.Convert.ToByte(floatVal);
		System.Console.WriteLine("The float as a byte is {0}.",
			byteVal);
	}
	catch (System.OverflowException) {
		System.Console.WriteLine(
			"The float value is too large for a byte.");
	}
}
Public Sub ConvertByteSingle(ByVal byteVal As Byte)
    Dim singleVal As Single

    ' Byte to float conversion will not overflow.
    singleVal = System.Convert.ToSingle(byteVal)
    System.Console.WriteLine("The byte as a single is {0}.", _
                              singleVal)

    ' Single to byte conversion can overflow.
    Try
        byteVal = System.Convert.ToByte(singleVal)
        System.Console.WriteLine("The single as a byte is {0}.", _
                                  byteVal)
    Catch exception As System.OverflowException
        System.Console.WriteLine( _
            "Overflow in single-to-byte conversion.")
    End Try
End Sub
추가 정보

ToByte(UInt64) ToByte(UInt64) ToByte(UInt64) ToByte(UInt64)

중요

이 API는 CLS 규격이 아닙니다.

지정된 64비트 부호 없는 정수의 값을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified 64-bit unsigned integer to an equivalent 8-bit unsigned integer.

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

매개 변수

value
UInt64 UInt64 UInt64 UInt64

변환할 64비트 부호 없는 정수입니다.The 64-bit unsigned integer to convert.

반환

value에 해당하는 8비트 부호 없는 정수입니다.An 8-bit unsigned integer that is equivalent to value.

예외

예제

다음 예제에서는 부호 없는 정수 (long)의 배열을 변환 Byte 값입니다.The following example converts an array of unsigned long integers to Byte values.

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

ToByte(SByte) ToByte(SByte) ToByte(SByte) ToByte(SByte)

중요

이 API는 CLS 규격이 아닙니다.

지정된 8비트 부호 있는 정수의 값을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified 8-bit signed integer to an equivalent 8-bit unsigned integer.

public:
 static System::Byte ToByte(System::SByte value);
[System.CLSCompliant(false)]
public static byte ToByte (sbyte value);
static member ToByte : sbyte -> byte
Public Shared Function ToByte (value As SByte) As Byte

매개 변수

value
SByte SByte SByte SByte

변환될 8비트 부호 있는 정수입니다.The 8-bit signed integer to be converted.

반환

value에 해당하는 8비트 부호 없는 정수입니다.An 8-bit unsigned integer that is equivalent to value.

예외

예제

다음 예제에서는 배열을 변환 SByte 값을 Byte 값입니다.The following example converts an array of SByte values to Byte values.

sbyte[] numbers = { SByte.MinValue, -1, 0, 10, SByte.MaxValue };
byte result;
foreach (sbyte number in numbers)
{
   try {
      result = Convert.ToByte(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 Byte type.", 
                        number.GetType().Name, number);
   }
}
// The example displays the following output:
//       The SByte value -128 is outside the range of the Byte type.
//       The SByte value -1 is outside the range of the Byte type.
//       Converted the SByte value 0 to the Byte value 0.
//       Converted the SByte value 10 to the Byte value 10.
//       Converted the SByte value 127 to the Byte value 127.
Dim numbers() As SByte = { SByte.MinValue, -1, 0, 10, SByte.MaxValue }
Dim result As Byte
For Each number As SByte In numbers
   Try
      result = Convert.ToByte(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 Byte type.", _
                        number.GetType().Name, number)
   End Try
Next
' The example displays the following output:
'       The SByte value -128 is outside the range of the Byte type.
'       The SByte value -1 is outside the range of the Byte type.
'       Converted the SByte value 0 to the Byte value 0.
'       Converted the SByte value 10 to the Byte value 10.
'       Converted the SByte value 127 to the Byte value 127.

ToByte(Double) ToByte(Double) ToByte(Double) ToByte(Double)

지정된 배정밀도 부동 소수점 숫자 값을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified double-precision floating-point number to an equivalent 8-bit unsigned integer.

public:
 static System::Byte ToByte(double value);
public static byte ToByte (double value);
static member ToByte : double -> byte
Public Shared Function ToByte (value As Double) As Byte

매개 변수

value
Double Double Double Double

변환할 배정밀도 부동 소수점 숫자입니다.The double-precision floating-point number to convert.

반환

가장 가까운 8비트 부호 없는 정수로 반올림된 value입니다.value, rounded to the nearest 8-bit unsigned integer. value가 두 정수 사이의 값이면 짝수 값을 반환합니다. 예를 들어 4.5는 4로, 5.5는 6으로 변환됩니다.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.

예외

valueMaxValue보다 크거나 MinValue보다 작습니다.value is greater than MaxValue or less than MinValue.

예제

변환 하는 다음 예제는 Byte 값을 DoubleDouble 값을 Byte합니다.The following example converts a Byte value to a Double and a Double value to a Byte.

public:
   void ConvertDoubleByte( double doubleVal )
   {
      Byte byteVal = 0;
      
      // Double to Byte conversion can overflow.
      try
      {
         byteVal = System::Convert::ToByte( doubleVal );
         System::Console::WriteLine( " {0} as a Byte is: {1}.",
         doubleVal, byteVal );
      }
      catch ( System::OverflowException^ ) 
      {
         System::Console::WriteLine( "Overflow in double-to-Byte conversion." );
      }
      
      // Byte to double conversion cannot overflow.
      doubleVal = System::Convert::ToDouble( byteVal );
      System::Console::WriteLine( " {0} as a double is: {1}.",
         byteVal, doubleVal );
   }
public void ConvertDoubleByte(double doubleVal) {
	byte	byteVal = 0;

	// Double to byte conversion can overflow.
	try {
		byteVal = System.Convert.ToByte(doubleVal);
		System.Console.WriteLine("{0} as a byte is: {1}.",
			doubleVal, byteVal);
	} 
	catch (System.OverflowException) {
		System.Console.WriteLine(
			"Overflow in double-to-byte conversion.");
	}

	// Byte to double conversion cannot overflow.
	doubleVal = System.Convert.ToDouble(byteVal);
	System.Console.WriteLine("{0} as a double is: {1}.",
		byteVal, doubleVal);
}
Public Sub ConvertDoubleByte(ByVal doubleVal As Double)
    Dim byteVal As Byte = 0

    ' Double to Byte conversion can overflow.
    Try
        byteVal = System.Convert.ToByte(doubleVal)
        System.Console.WriteLine("{0} as a Byte is: {1}.", _
            doubleVal, byteVal)
    Catch exception As System.OverflowException
        System.Console.WriteLine( _
            "Overflow in Double-to-Byte conversion.")
    End Try

    ' Byte to Double conversion cannot overflow.
    doubleVal = System.Convert.ToDouble(byteVal)
    System.Console.WriteLine("{0} as a Double is: {1}.", _
                              byteVal, doubleVal)
End Sub

ToByte(Int64) ToByte(Int64) ToByte(Int64) ToByte(Int64)

지정된 64비트 부호 있는 정수의 값을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified 64-bit signed integer to an equivalent 8-bit unsigned integer.

public:
 static System::Byte ToByte(long value);
public static byte ToByte (long value);
static member ToByte : int64 -> byte
Public Shared Function ToByte (value As Long) As Byte

매개 변수

value
Int64 Int64 Int64 Int64

변환할 64비트 부호 있는 정수입니다.The 64-bit signed integer to convert.

반환

value에 해당하는 8비트 부호 없는 정수입니다.An 8-bit unsigned integer that is equivalent to value.

예외

valueMinValue보다 작거나 MaxValue보다 큽니다.value is less than MinValue or greater than MaxValue.

예제

다음 예제에서는 배열을 변환 Int64 값을 Byte 값입니다.The following example converts an array of Int64 values to Byte values.

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

ToByte(Byte) ToByte(Byte) ToByte(Byte) ToByte(Byte)

지정된 8비트 부호 없는 정수를 실제 변환 작업 없이 반환합니다.Returns the specified 8-bit unsigned integer; no actual conversion is performed.

public:
 static System::Byte ToByte(System::Byte value);
public static byte ToByte (byte value);
static member ToByte : byte -> byte
Public Shared Function ToByte (value As Byte) As Byte

매개 변수

value
Byte Byte Byte Byte

반환할 8비트 부호 없는 정수입니다.The 8-bit unsigned integer to return.

반환

value를 변경하지 않고 반환합니다.value is returned unchanged.

ToByte(Char) ToByte(Char) ToByte(Char) ToByte(Char)

지정된 유니코드 문자의 값을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified Unicode character to the equivalent 8-bit unsigned integer.

public:
 static System::Byte ToByte(char value);
public static byte ToByte (char value);
static member ToByte : char -> byte
Public Shared Function ToByte (value As Char) As Byte

매개 변수

value
Char Char Char Char

변환할 유니코드 문자입니다.The Unicode character to convert.

반환

value에 해당하는 8비트 부호 없는 정수입니다.An 8-bit unsigned integer that is equivalent to value.

예외

valueMaxValue보다 큰 숫자를 나타냅니다.value represents a number that is greater than MaxValue.

예제

다음 예제에서는 배열을 변환 Char 값을 Byte 값입니다.The following example converts an array of Char values to Byte values.

char[] chars = { 'a', 'z', '\x0007', '\x03FF' };
foreach (char ch in chars)
{
   try {
      byte result = Convert.ToByte(ch);
      Console.WriteLine("{0} is converted to {1}.", ch, result);
   }   
   catch (OverflowException) {
      Console.WriteLine("Unable to convert u+{0} to a byte.", 
                        Convert.ToInt16(ch).ToString("X4"));
   }
}   
// The example displays the following output:
//       a is converted to 97.
//       z is converted to 122.
//        is converted to 7.
//       Unable to convert u+03FF to a byte.      
Dim chars() As Char = { "a"c, "z"c, ChrW(7), ChrW(1023) }
For Each ch As Char in chars
   Try
      Dim result As Byte = Convert.ToByte(ch)
      Console.WriteLine("{0} is converted to {1}.", ch, result)
   Catch e As OverflowException
      Console.WriteLIne("Unable to convert u+{0} to a byte.", _
                        AscW(ch).ToString("X4"))
   End Try
Next   
' The example displays the following output:
'       a is converted to 97.
'       z is converted to 122.
'        is converted to 7.
'       Unable to convert u+03FF to a byte.      

설명

숫자 코드를 나타내는 부호 없는 바이트 값을 반환 하는이 메서드는 Char 개체를 전달 합니다.This method returns an unsigned byte value that represents the numeric code of the Char object passed to it. .NET Framework에는 Char 개체는 16 비트 값입니다.In the .NET Framework, a Char object is a 16-bit value. 이 메서드는 ASCII 문자 범위 또는 유니코드 C0 컨트롤과 및 기본 라틴어, C1 제어 및 라틴어-1 보충 범위 u+0000 ~ U + 00FF에서에서 문자의 숫자 코드를 반환 하는 데 적합 한 것을 의미 합니다.This means that the method is suitable for returning the numeric codes of characters in the ASCII character range or in the Unicode C0 Controls and Basic Latin, and C1 Controls and Latin-1 Supplement ranges, from U+0000 to U+00FF.

ToByte(DateTime) ToByte(DateTime) ToByte(DateTime) ToByte(DateTime)

이 메서드를 호출하면 InvalidCastException이 항상 throw됩니다.Calling this method always throws InvalidCastException.

public:
 static System::Byte ToByte(DateTime value);
public static byte ToByte (DateTime value);
static member ToByte : DateTime -> byte
Public Shared Function ToByte (value As DateTime) As Byte

매개 변수

value
DateTime DateTime DateTime DateTime

변환할 날짜 및 시간 값입니다.The date and time value to convert.

반환

이 변환은 지원되지 않습니다.This conversion is not supported. 값이 반환되지 않습니다.No value is returned.

예외

이 변환은 지원되지 않습니다.This conversion is not supported.

ToByte(Boolean) ToByte(Boolean) ToByte(Boolean) ToByte(Boolean)

지정된 부울 값을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the specified Boolean value to the equivalent 8-bit unsigned integer.

public:
 static System::Byte ToByte(bool value);
public static byte ToByte (bool value);
static member ToByte : bool -> byte
Public Shared Function ToByte (value As Boolean) As Byte

매개 변수

value
Boolean Boolean Boolean Boolean

변환할 부울 값입니다.The Boolean value to convert.

반환

valuetrue이면 숫자 1을 반환하고, 그렇지 않으면 0을 반환합니다.The number 1 if value is true; otherwise, 0.

예제

다음 예제에서는 변환을 BooleanByte 값입니다.The following example illustrates the conversion of Boolean to Byte values.

using namespace System;

void main()
{
   bool falseFlag = false;
   bool trueFlag = true;

   Console::WriteLine("{0} converts to {1}.", falseFlag,
                      Convert::ToByte(falseFlag));
   Console::WriteLine("{0} converts to {1}.", trueFlag, 
                      Convert::ToByte(trueFlag));
}
// The example displays the following output:
//       False converts to 0.
//       True converts to 1.
bool falseFlag = false;
bool trueFlag = true;

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

ToByte(Int16) ToByte(Int16) ToByte(Int16) ToByte(Int16)

지정된 16비트 부호 있는 정수의 값을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified 16-bit signed integer to an equivalent 8-bit unsigned integer.

public:
 static System::Byte ToByte(short value);
public static byte ToByte (short value);
static member ToByte : int16 -> byte
Public Shared Function ToByte (value As Short) As Byte

매개 변수

value
Int16 Int16 Int16 Int16

변환할 16비트 부호 있는 정수입니다.The 16-bit signed integer to convert.

반환

value에 해당하는 8비트 부호 없는 정수입니다.An 8-bit unsigned integer that is equivalent to value.

예외

valueMinValue보다 작거나 MaxValue보다 큽니다.value is less than MinValue or greater than MaxValue.

예제

다음 예제에서는 배열을 변환 Int16 값을 Byte 값입니다.The following example converts an array of Int16 values to Byte values.

short[] numbers = { Int16.MinValue, -1, 0, 121, 340, Int16.MaxValue };
byte result;
foreach (short number in numbers)
{
   try {
      result = Convert.ToByte(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 Byte type.", 
                        number.GetType().Name, number);
   }
}
// The example displays the following output:
//       The Int16 value -32768 is outside the range of the Byte type.
//       The Int16 value -1 is outside the range of the Byte type.
//       Converted the Int16 value 0 to the Byte value 0.
//       Converted the Int16 value 121 to the Byte value 121.
//       The Int16 value 340 is outside the range of the Byte type.
//       The Int16 value 32767 is outside the range of the Byte type.
Dim numbers() As Short = { Int16.MinValue, -1, 0, 121, 340, Int16.MaxValue }
Dim result As Byte
For Each number As Short In numbers
   Try
      result = Convert.ToByte(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 Byte type.", _
                        number.GetType().Name, number)
   End Try
Next
' The example displays the following output:
'       The Int16 value -32768 is outside the range of the Byte type.
'       The Int16 value -1 is outside the range of the Byte type.
'       Converted the Int16 value 0 to the Byte value 0.
'       Converted the Int16 value 121 to the Byte value 121.
'       The Int16 value 340 is outside the range of the Byte type.
'       The Int16 value 32767 is outside the range of the Byte type.

ToByte(Int32) ToByte(Int32) ToByte(Int32) ToByte(Int32)

지정된 32비트 부호 있는 정수의 값을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified 32-bit signed integer to an equivalent 8-bit unsigned integer.

public:
 static System::Byte ToByte(int value);
public static byte ToByte (int value);
static member ToByte : int -> byte
Public Shared Function ToByte (value As Integer) As Byte

매개 변수

value
Int32 Int32 Int32 Int32

변환할 32비트 부호 있는 정수입니다.The 32-bit signed integer to convert.

반환

value에 해당하는 8비트 부호 없는 정수입니다.An 8-bit unsigned integer that is equivalent to value.

예외

valueMinValue보다 작거나 MaxValue보다 큽니다.value is less than MinValue or greater than MaxValue.

예제

다음 예제에서는 배열을 변환 Int32 값을 Byte 값입니다.The following example converts an array of Int32 values to Byte values.

int[] numbers = { Int32.MinValue, -1, 0, 121, 340, Int32.MaxValue };
byte result;
foreach (int number in numbers)
{
   try {
      result = Convert.ToByte(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 Byte type.", 
                        number.GetType().Name, number);
   }
}
// The example displays the following output:
//       The Int32 value -2147483648 is outside the range of the Byte type.
//       The Int32 value -1 is outside the range of the Byte type.
//       Converted the Int32 value 0 to the Byte value 0.
//       Converted the Int32 value 121 to the Byte value 121.
//       The Int32 value 340 is outside the range of the Byte type.
//       The Int32 value 2147483647 is outside the range of the Byte type.      
Dim numbers() As Integer = { Int32.MinValue, -1, 0, 121, 340, Int32.MaxValue }
Dim result As Byte
For Each number As Integer In numbers
   Try
      result = Convert.ToByte(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 Byte type.", _
                        number.GetType().Name, number)
   End Try
Next
' The example displays the following output:
'       The Int32 value -2147483648 is outside the range of the Byte type.
'       The Int32 value -1 is outside the range of the Byte type.
'       Converted the Int32 value 0 to the Byte value 0.
'       Converted the Int32 value 121 to the Byte value 121.
'       The Int32 value 340 is outside the range of the Byte type.
'       The Int32 value 2147483647 is outside the range of the Byte type.      

ToByte(Decimal) ToByte(Decimal) ToByte(Decimal) ToByte(Decimal)

지정된 10진수 값을 해당하는 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified decimal number to an equivalent 8-bit unsigned integer.

public:
 static System::Byte ToByte(System::Decimal value);
public static byte ToByte (decimal value);
static member ToByte : decimal -> byte
Public Shared Function ToByte (value As Decimal) As Byte

매개 변수

value
Decimal Decimal Decimal Decimal

변환할 숫자입니다.The number to convert.

반환

가장 가까운 8비트 부호 없는 정수로 반올림된 value입니다.value, rounded to the nearest 8-bit unsigned integer. value가 두 정수 사이의 값이면 짝수 값을 반환합니다. 예를 들어 4.5는 4로, 5.5는 6으로 변환됩니다.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.

예외

valueMaxValue보다 크거나 MinValue보다 작습니다.value is greater than MaxValue or less than MinValue.

설명

변환 하는 다음 예제는 Byte 값을 DecimalDecimal 값을 Byte합니다.The following example converts a Byte value to a Decimal and a Decimal value to a Byte.

public:
   void ConvertByteDecimal( Byte byteVal )
   {
      Decimal decimalVal;
      
      // Byte to decimal conversion will not overflow.
      decimalVal = System::Convert::ToDecimal( byteVal );
      System::Console::WriteLine( "The Byte as a decimal is {0}.",
         decimalVal );
      
      // Decimal to Byte conversion can overflow.
      try
      {
         byteVal = System::Convert::ToByte( decimalVal );
         System::Console::WriteLine( "The Decimal as a Byte is {0}.",
         byteVal );
      }
      catch ( System::OverflowException^ ) 
      {
         System::Console::WriteLine(
            "The decimal value is too large for a Byte." );
      }
   }
public void ConvertByteDecimal(byte byteVal) {
	decimal decimalVal;

	// Byte to decimal conversion will not overflow.
	decimalVal = System.Convert.ToDecimal(byteVal);
	System.Console.WriteLine("The byte as a decimal is {0}.",
		decimalVal);

	// Decimal to byte conversion can overflow.
	try {
		byteVal = System.Convert.ToByte(decimalVal);
		System.Console.WriteLine("The Decimal as a byte is {0}.",
			byteVal);
	}
	catch (System.OverflowException) {
		System.Console.WriteLine(
			"The decimal value is too large for a byte.");
	}
}
Public Sub ConvertByteDecimal(ByVal byteVal As Byte)
    Dim decimalVal As Decimal

    ' Byte to decimal conversion will not overflow.
    decimalVal = System.Convert.ToDecimal(byteVal)
    System.Console.WriteLine("The byte as a decimal is {0}.", _
                              decimalVal)

    ' Decimal to byte conversion can overflow.
    Try
        byteVal = System.Convert.ToByte(decimalVal)
        System.Console.WriteLine("The Decimal as a byte is {0}.", _
                                  byteVal)
    Catch exception As System.OverflowException
        System.Console.WriteLine( _
            "Overflow in decimal-to-byte conversion.")
    End Try
End Sub

ToByte(Object) ToByte(Object) ToByte(Object) ToByte(Object)

지정된 개체의 값을 8비트 부호 없는 정수로 변환합니다.Converts the value of the specified object to an 8-bit unsigned integer.

public:
 static System::Byte ToByte(System::Object ^ value);
public static byte ToByte (object value);
static member ToByte : obj -> byte
Public Shared Function ToByte (value As Object) As Byte

매개 변수

value
Object Object Object Object

IConvertible 인터페이스를 구현하는 개체나 null입니다.An object that implements the IConvertible interface, or null.

반환

value에 해당하는 8비트 부호 없는 정수이거나, valuenull이면 0입니다.An 8-bit unsigned integer that is equivalent to value, or zero if value is null.

예외

valueByte 값에 대한 속성 형식이 아닙니다.value is not in the property format for a Byte value.

valueIConvertible를 구현하지 않습니다.value does not implement IConvertible.

또는-or- value에서 Byte 형식으로의 변환은 지원되지 않습니다.Conversion from value to the Byte type is not supported.

valueMinValue보다 작거나 MaxValue보다 큰 숫자를 나타냅니다.value represents a number that is less than MinValue or greater than MaxValue.

예제

다음 예제에서는 합니다 ToByte(Object) 개체 배열을 변환 방법 Byte 값입니다.The following example uses the ToByte(Object) method to convert an array of objects to Byte values.

object[] values = { true, -12, 163, 935, 'x', "104", "103.0", "-1", 
                    "1.00e2", "One", 1.00e2};
byte result;
foreach (object value in values)
{
   try {
      result = Convert.ToByte(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 Byte 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 Byte exists for the {0} value {1}.", 
                        value.GetType().Name, value);
                        
   }
}                           
// The example displays the following output:
//       Converted the Boolean value True to the Byte value 1.
//       The Int32 value -12 is outside the range of the Byte type.
//       Converted the Int32 value 163 to the Byte value 163.
//       The Int32 value 935 is outside the range of the Byte type.
//       Converted the Char value x to the Byte value 120.
//       Converted the String value 104 to the Byte value 104.
//       The String value 103.0 is not in a recognizable format.
//       The String value -1 is outside the range of the Byte 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 Byte value 100.      
Dim values() As Object = { True, -12, 163, 935, "x"c, "104", "103.0", "-1", _
                           "1.00e2", "One", 1.00e2}
Dim result As Byte
For Each value As Object In values
   Try
      result = Convert.ToByte(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 Byte 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 Byte 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 Byte value 1.
'       The Int32 value -12 is outside the range of the Byte type.
'       Converted the Int32 value 163 to the Byte value 163.
'       The Int32 value 935 is outside the range of the Byte type.
'       Converted the Char value x to the Byte value 120.
'       Converted the String value 104 to the Byte value 104.
'       The String value 103.0 is not in a recognizable format.
'       The String value -1 is outside the range of the Byte 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 Byte value 100.      

설명

하는 경우 value 아닙니다 null,이 메서드 호출을 래핑한 합니다 IConvertible.ToByte 의 기본 형식 구현 value합니다.If value is not null, this method wraps a call to the IConvertible.ToByte implementation of the underlying type of value.

적용 대상