using System.IO; // Create a new FileStream object using (FileStream fs = new FileStream("test.bin", FileMode.Create)) { // Define a byte array byte[] data = new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05 }; // Write the byte array in little-endian byte order fs.WriteLe(data, 0, data.Length); }This code example creates a new FileStream object and writes a byte array in little-endian byte order to a file named "test.bin". The byte array contains the values 0x01, 0x02, 0x03, 0x04, and 0x05. This method is included in the System.IO namespace of the .NET Framework.