WPF基本的客户端和服务端TCP通信代码

以下是一个简单的 WPF 客户端和服务端 TCP 通信的示例代码：

服务端代码：

using System;
using System.Net;
using System.Net.Sockets;
using System.Text;

namespace Server
{
    class Program
    {
        static void Main(string[] args)
        {
            TcpListener server = null;
            try
            {
                // Set the TcpListener on port 13000.
                Int32 port = 13000;
                IPAddress localAddr = IPAddress.Parse("127.0.0.1");

                // TcpListener server = new TcpListener(port);
                server = new TcpListener(localAddr, port);

                // Start listening for client requests.
                server.Start();

                // Buffer for reading data
                Byte[] bytes = new Byte[256];
                String data = null;

                // Enter the listening loop.
                while (true)
                {
                    Console.Write("Waiting for a connection... ");

                    // Perform a blocking call to accept requests.
                    // You could also use server.AcceptSocket() here.
                    TcpClient client = server.AcceptTcpClient();
                    Console.WriteLine("Connected!");

                    data = null;

                    // Get a stream object for reading and writing
                    NetworkStream stream = client.GetStream();

                    int i;

                    // Loop to receive all the data sent by the client.
                    while ((i = stream.Read(bytes, 0, bytes.Length)) != 0)
                    {
                        // Translate data bytes to a ASCII string.
                        data = Encoding.ASCII.GetString(bytes, 0, i);
                        Console.WriteLine("Received: {0}", data);

                        // Process the data sent by the client.
                        data = data.ToUpper();

                        byte[] msg = Encoding.ASCII.GetBytes(data);

                        // Send back a response.
                        stream.Write(msg, 0, msg.Length);
                        Console.WriteLine("Sent: {0}", data);
                    }

                    // Shutdown and end connection
                    client.Close();
                }
            }
            catch (SocketException e)
            {
                Console.WriteLine("SocketException: {0}", e);
            }
            finally
            {
                // Stop listening for new clients.
                server.Stop();
            }

            Console.WriteLine("\nHit enter to continue...");
            Console.Read();
        }
    }
}

客户端代码：

using System;
using System.Net;
using System.Net.Sockets;
using System.Text;

namespace Client
{
    class Program
    {
        static void Main(string[] args)
        {
            string server = "127.0.0.1";
            int port = 13000;
            try
            {
                TcpClient client = new TcpClient(server, port);

                // Translate the passed message into ASCII and store it as a Byte array.
                string message = "Hello, server!";
                byte[] data = Encoding.ASCII.GetBytes(message);

                // Get a client stream for reading and writing.
                //  Stream stream = client.GetStream();

                NetworkStream stream = client.GetStream();

                // Send the message to the connected TcpServer.
                stream.Write(data, 0, data.Length);

                Console.WriteLine("Sent: {0}", message);

                // Receive the TcpServer.response.

                // Buffer to store the response bytes.
                data = new byte[256];

                // String to store the response ASCII representation.
                string responseData = string.Empty;

                // Read the first batch of the TcpServer response bytes.
                int bytes = stream.Read(data, 0, data.Length);
                responseData = Encoding.ASCII.GetString(data, 0, bytes);
                Console.WriteLine("Received: {0}", responseData);

                // Close everything.
                stream.Close();
                client.Close();
            }
            catch (ArgumentNullException e)
            {
                Console.WriteLine("ArgumentNullException: {0}", e);
            }
            catch (SocketException e)
            {
                Console.WriteLine("SocketException: {0}", e);
            }

            Console.WriteLine("\nHit enter to continue...");
            Console.Read();
        }
    }
}

这里使用了 .NET Framework 自带的 TCP 相关类，服务端使用 `TcpListener` 监听客户端连接，客户端使用 `TcpClient` 连接服务器，使用 `NetworkStream` 进行数据通信。注意修改 IP 地址和端口号以适应您的需求。