Byte vs byte...

[tobeyu]

what is the difference with these?? I know byte is an integral data type where Byte is a structure but when they both declare an unsigned 8-bit integer, what is the difference and why would you use one vs the other?

My problem is, I am playing around with a socket application and looking at the TcpClient example in MSDN, it declares a Byte[] to hold the data to send and a byte[] to hold the data to receive. This is confusing the heck out of me and I can't figure out why the difference.

From MSDN:

TcpClient tcpClient = new TcpClient();
// Uses the GetStream public method to return the NetworkStream.
try{
    NetworkStream networkStream = tcpClient.GetStream();
    if(networkStream.CanWrite){
        Byte[] sendBytes = Encoding.ASCII.GetBytes("Is anybody there?");
        networkStream.Write(sendBytes, 0, sendBytes.Length);
    }
    else{
        Console.WriteLine("You cannot write data to this stream.");
        tcpClient.Close();
        return;
    }
    if(networkStream.CanRead){
     
      // Reads NetworkStream into a byte buffer.
      byte[] bytes = new byte[tcpClient.ReceiveBufferSize];
      // Read can return anything from 0 to numBytesToRead. 
      // This method blocks until at least one byte is read.
      networkStream.Read(bytes, 0, (int) tcpClient.ReceiveBufferSize);
             
     // Returns the data received from the host to the console.
     string returndata = Encoding.ASCII.GetString(bytes);
     Console.WriteLine("This is what the host returned to you: " + returndata);
    }
    else{
         Console.WriteLine("You cannot read data from this stream.");
         tcpClient.Close();
         return;
    }
  }
catch (Exception e ) {
              Console.WriteLine(e.ToString());
       }

Thanks in advance,
Tobey