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BitConverter.GetBytes Method (Int64)

.NET Framework 4

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

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)
C#
C++
F#
VB
Copy 
public static byte[] GetBytes(
	long value
)

Parameters

value
Type: System.Int64
The number to convert.

Return Value

Type: System.Byte[]
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.

C#
C++
VB
Copy 

// 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
*/

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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