byte[] data = { 0x41, 0x42, 0x43 }; MemoryStream stream = new MemoryStream(data); PacketReader reader = new PacketReader(stream); sbyte value = reader.ReadSByte(); Console.WriteLine(value); // Output: 65In this example, we create a byte array containing the hexadecimal values 0x41, 0x42, and 0x43. We then create a MemoryStream from the byte array and pass it to a new instance of a PacketReader. Finally, we use the ReadSByte method to read the first byte (0x41) from the stream, which is converted to a signed byte value of 65 (since 0x41 is the ASCII value for the character 'A'). Based on the use of the PacketReader class and the byte array data, it's likely that this is code from a custom network protocol implementation or a packet parsing library.