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BitConverter.GetBytes Method (Int32)

Returns the specified 32-bit signed integer value as an array of bytes.

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

public static byte[] GetBytes(
	int value
)

Parameters

value
Type: System.Int32

The number to convert.

Return Value

Type: System.Byte[]
An array of bytes with length 4.

The following code example converts the bit patterns of Int32 values to Byte arrays with the GetBytes method.

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

class GetBytesInt32Demo
{
    const string formatter = "{0,16}{1,20}";

    // Convert an int argument to a byte array and display it. 
    public static void GetBytesInt32( int 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( int ) " +
            "\nmethod generates the following output.\n" );
        Console.WriteLine( formatter, "int", "byte array" );
        Console.WriteLine( formatter, "---", "----------" );

        // Convert int values and display the results.
        GetBytesInt32( 0 );
        GetBytesInt32( 15 );
        GetBytesInt32( -15 );
        GetBytesInt32( 0x100000 );
        GetBytesInt32( -0x100000 );
        GetBytesInt32( 1000000000 );
        GetBytesInt32( -1000000000 );
        GetBytesInt32( int.MinValue );
        GetBytesInt32( int.MaxValue );
    }
}

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

             int          byte array
             ---          ----------
               0         00-00-00-00
              15         0F-00-00-00
             -15         F1-FF-FF-FF
         1048576         00-00-10-00
        -1048576         00-00-F0-FF
      1000000000         00-CA-9A-3B
     -1000000000         00-36-65-C4
     -2147483648         00-00-00-80
      2147483647         FF-FF-FF-7F
*/

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

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