BitConverter.GetBytes Method (Int64)

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

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

[SecuritySafeCriticalAttribute]
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.


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

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

   // Convert a long argument to a byte array and display it.
   public static void GetBytesInt64(System.Windows.Controls.TextBlock outputBlock, long argument)
   {
      byte[] byteArray = BitConverter.GetBytes(argument);
      outputBlock.Text += String.Format(formatter, argument,
          BitConverter.ToString(byteArray)) + "\n";
   }

   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
   {
      outputBlock.Text += String.Format(
          "This example of the BitConverter.GetBytes( long ) " +
          "\nmethod generates the following output.\n") + "\n";
      outputBlock.Text += String.Format(formatter, "long", "byte array") + "\n";
      outputBlock.Text += String.Format(formatter, "----", "----------") + "\n";

      // Convert long values and display the results.
      GetBytesInt64(outputBlock, 0);
      GetBytesInt64(outputBlock, 0xFFFFFF);
      GetBytesInt64(outputBlock, -0xFFFFFF);
      GetBytesInt64(outputBlock, 1000000000);
      GetBytesInt64(outputBlock, -1000000000);
      GetBytesInt64(outputBlock, 0x100000000);
      GetBytesInt64(outputBlock, -0x100000000);
      GetBytesInt64(outputBlock, 0xAAAAAAAAAAAA);
      GetBytesInt64(outputBlock, -0xAAAAAAAAAAAA);
      GetBytesInt64(outputBlock, 1000000000000000000);
      GetBytesInt64(outputBlock, -1000000000000000000);
      GetBytesInt64(outputBlock, long.MinValue);
      GetBytesInt64(outputBlock, 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
*/


Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Community Additions

ADD
Show: