Export (0) Print
Expand All

BitConverter.GetBytes Method (UInt64)

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

This API is not CLS-compliant. 

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

[CLSCompliantAttribute(false)]
public static byte[] GetBytes(
	ulong value
)

Parameters

value
Type: System.UInt64

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 UInt64 values to Byte arrays with the GetBytes method.

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

class GetBytesUInt64Demo
{
    const string formatter = "{0,22}{1,30}";

    // Convert a ulong argument to a byte array and display it. 
    public static void GetBytesUInt64( ulong 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( ulong ) " +
            "\nmethod generates the following output.\n" );
        Console.WriteLine( formatter, "ulong", "byte array" );
        Console.WriteLine( formatter, "-----", "----------" );

        // Convert ulong values and display the results.
        GetBytesUInt64( 0xFFFFFF );
        GetBytesUInt64( 1000000000 );
        GetBytesUInt64( 0x100000000 );
        GetBytesUInt64( 0xAAAAAAAAAAAA );
        GetBytesUInt64( 1000000000000000000 );
        GetBytesUInt64( 10000000000000000000 );
        GetBytesUInt64( ulong.MinValue );
        GetBytesUInt64( long.MaxValue );
        GetBytesUInt64( ulong.MaxValue );
    }
}

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

                 ulong                    byte array
                 -----                    ----------
              16777215       FF-FF-FF-00-00-00-00-00
            1000000000       00-CA-9A-3B-00-00-00-00
            4294967296       00-00-00-00-01-00-00-00
       187649984473770       AA-AA-AA-AA-AA-AA-00-00
   1000000000000000000       00-00-64-A7-B3-B6-E0-0D
  10000000000000000000       00-00-E8-89-04-23-C7-8A
                     0       00-00-00-00-00-00-00-00
   9223372036854775807       FF-FF-FF-FF-FF-FF-FF-7F
  18446744073709551615       FF-FF-FF-FF-FF-FF-FF-FF
*/

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

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

.NET Framework

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

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

Community Additions

ADD
Show:
© 2014 Microsoft