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BitConverter.GetBytes Method (Int64)

Returns the specified 64-bit signed integer value as an array of bytes.

Namespace: System
Assembly: mscorlib (in mscorlib.dll)

public static byte[] GetBytes (
	long value
)
public static byte[] GetBytes (
	long value
)
public static function GetBytes (
	value : long
) : byte[]

Parameters

value

The number to convert.

Return Value

An array of bytes with length 8.

The following code example converts the bit patterns of Int64 values to Byte arrays with the GetBytes method.

// Example of the BitConverter.GetBytes( long ) method.
using System;

class GetBytesInt64Demo
{
    const string formatter = "{0,22}{1,30}";
 
    // Convert a long argument to a byte array and display it.
    public static void GetBytesInt64( long argument )
    {
        byte[] byteArray = BitConverter.GetBytes( argument );
        Console.WriteLine( formatter, argument, 
            BitConverter.ToString( byteArray ) );
    }
       
    public static void Main( )
    {
        Console.WriteLine( 
            "This example of the BitConverter.GetBytes( long ) " +
            "\nmethod generates the following output.\n" );
        Console.WriteLine( formatter, "long", "byte array" );
        Console.WriteLine( formatter, "----", "----------" );
          
        // Convert long values and display the results.
        GetBytesInt64( 0 );
        GetBytesInt64( 0xFFFFFF );
        GetBytesInt64( -0xFFFFFF );
        GetBytesInt64( 1000000000 );
        GetBytesInt64( -1000000000 );
        GetBytesInt64( 0x100000000 );
        GetBytesInt64( -0x100000000 );
        GetBytesInt64( 0xAAAAAAAAAAAA );
        GetBytesInt64( -0xAAAAAAAAAAAA );
        GetBytesInt64( 1000000000000000000 );
        GetBytesInt64( -1000000000000000000 );
        GetBytesInt64( long.MinValue );
        GetBytesInt64( long.MaxValue );
    }
}

/*
This example of the BitConverter.GetBytes( long )
method generates the following output.

                  long                    byte array
                  ----                    ----------
                     0       00-00-00-00-00-00-00-00
              16777215       FF-FF-FF-00-00-00-00-00
             -16777215       01-00-00-FF-FF-FF-FF-FF
            1000000000       00-CA-9A-3B-00-00-00-00
           -1000000000       00-36-65-C4-FF-FF-FF-FF
            4294967296       00-00-00-00-01-00-00-00
           -4294967296       00-00-00-00-FF-FF-FF-FF
       187649984473770       AA-AA-AA-AA-AA-AA-00-00
      -187649984473770       56-55-55-55-55-55-FF-FF
   1000000000000000000       00-00-64-A7-B3-B6-E0-0D
  -1000000000000000000       00-00-9C-58-4C-49-1F-F2
  -9223372036854775808       00-00-00-00-00-00-00-80
   9223372036854775807       FF-FF-FF-FF-FF-FF-FF-7F
*/

// Example of the BitConverter.GetBytes( long ) method.
import System.*;

class GetBytesInt64Demo
{
    private static String formatter = "{0,22}{1,30}";

    // Convert a long argument to a byte array and display it.
    public static void GetBytesInt64(long argument)
    {
        ubyte byteArray[] = BitConverter.GetBytes(argument);
        Console.WriteLine(formatter, (Int64)argument, 
            BitConverter.ToString(byteArray));
    } //GetBytesInt64

    public static void main(String[] args)
    {
        Console.WriteLine(("This example of the BitConverter.GetBytes( long ) " 
            + "\nmethod generates the following output.\n"));
        Console.WriteLine(formatter, "long", "byte array");
        Console.WriteLine(formatter, "----", "----------");

        // Convert long values and display the results.
        GetBytesInt64(0);
        GetBytesInt64(0xFFFFFF);
        GetBytesInt64(-0xFFFFFF);
        GetBytesInt64(1000000000);
        GetBytesInt64(-1000000000);
        GetBytesInt64(0x100000000L);
        GetBytesInt64(-0x100000000L);
        GetBytesInt64(0xAAAAAAAAAAAAL);
        GetBytesInt64(-0xAAAAAAAAAAAAL);
        GetBytesInt64(1000000000000000000L);
        GetBytesInt64(-1000000000000000000L);
        GetBytesInt64(Long.MIN_VALUE);
        GetBytesInt64(Long.MAX_VALUE);
    } //main
} //GetBytesInt64Demo

/*
This example of the BitConverter.GetBytes( long )
method generates the following output.

                  long                    byte array
                  ----                    ----------
                     0       00-00-00-00-00-00-00-00
              16777215       FF-FF-FF-00-00-00-00-00
             -16777215       01-00-00-FF-FF-FF-FF-FF
            1000000000       00-CA-9A-3B-00-00-00-00
           -1000000000       00-36-65-C4-FF-FF-FF-FF
            4294967296       00-00-00-00-01-00-00-00
           -4294967296       00-00-00-00-FF-FF-FF-FF
       187649984473770       AA-AA-AA-AA-AA-AA-00-00
      -187649984473770       56-55-55-55-55-55-FF-FF
   1000000000000000000       00-00-64-A7-B3-B6-E0-0D
  -1000000000000000000       00-00-9C-58-4C-49-1F-F2
  -9223372036854775808       00-00-00-00-00-00-00-80
   9223372036854775807       FF-FF-FF-FF-FF-FF-FF-7F
*/

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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