BitConverter.GetBytes Method (UInt32)


The .NET API Reference documentation has a new home. Visit the .NET API Browser on to see the new experience.

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

This API is not CLS-compliant.

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

public static byte[] GetBytes(
	uint value


Type: System.UInt32

The number to convert.

Return Value

Type: System.Byte[]

An array of bytes with length 4.

The order of bytes in the array returned by the GetBytes method depends on whether the computer architecture is little-endian or big-endian.

The following code example converts the bit patterns of UInt32 values to Byte arrays with the GetBytes method.

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

class GetBytesUInt32Demo
    const string formatter = "{0,16}{1,20}";

    // Convert a uint argument to a byte array and display it.
    public static void GetBytesUInt32( uint argument )
        byte[ ] byteArray = BitConverter.GetBytes( argument );
        Console.WriteLine( formatter, argument, 
            BitConverter.ToString( byteArray ) );

    public static void Main( )
            "This example of the BitConverter.GetBytes( uint ) " +
            "\nmethod generates the following output.\n" );
        Console.WriteLine( formatter, "uint", "byte array" );
        Console.WriteLine( formatter, "----", "----------" );

        // Convert uint values and display the results.
        GetBytesUInt32( 15 );
        GetBytesUInt32( 1023 );
        GetBytesUInt32( 0x100000 );
        GetBytesUInt32( 1000000000 );
        GetBytesUInt32( uint.MinValue );
        GetBytesUInt32( int.MaxValue );
        GetBytesUInt32( uint.MaxValue );

This example of the BitConverter.GetBytes( uint )
method generates the following output.

            uint          byte array
            ----          ----------
              15         0F-00-00-00
            1023         FF-03-00-00
         1048576         00-00-10-00
      1000000000         00-CA-9A-3B
               0         00-00-00-00
      2147483647         FF-FF-FF-7F
      4294967295         FF-FF-FF-FF

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
Return to top