FileStream a = File.Create(@"C:\Public\BinaryTest.dat"); BinaryWriter b = new BinaryWriter(a); b.Write(new byte[] { 47, 50 }); b.Write("Hello World"); b.Write(42); b.Close(); a = File.OpenRead(@"C:\Public\BinaryTest.dat"); BinaryReader c = new BinaryReader(a); c.ReadBytes(2); Console.WriteLine(c.ReadString()); Console.WriteLine(c.ReadInt32()); c.Close();