using System; using System.IO; class Program { static void Main(string[] args) { byte[] byteArray = new byte[] { 0x41, 0x42, 0x43 }; MemoryStream stream = new MemoryStream(byteArray); int readByte = stream.ReadByte(); Console.WriteLine("Read byte: " + readByte); } }In this example, we create a byte array and use it to create a memory stream. We then call the ReadByte method on the memory stream to read the first byte of the stream. The output will be "Read byte: 65" since 0x41 is the ASCII code for "A". Package Library: This method is part of the .NET Framework Class Library.