C#使用wpf写一个udpclient一个项目写服务端另一个项目写客户端收发信息

好的，下面是一个简单的示例，演示如何使用C#和WPF编写UDP客户端和服务器：

UDP客户端示例：

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

namespace UdpClientExample
{
    public partial class MainWindow : Window
    {
        private UdpClient udpClient;
        private IPEndPoint serverEndPoint;

        public MainWindow()
        {
            InitializeComponent();

            // 初始化UDP客户端
            udpClient = new UdpClient();
            serverEndPoint = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 8888);
        }

        private void SendButton_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                // 将文本框中的消息转换为字节数组
                byte[] messageBytes = Encoding.ASCII.GetBytes(MessageTextBox.Text);

                // 发送消息到服务器
                udpClient.Send(messageBytes, messageBytes.Length, serverEndPoint);

                // 显示发送消息的信息
                MessageListBox.Items.Add($"[SENT] {MessageTextBox.Text}");
            }
            catch (Exception ex)
            {
                MessageBox.Show($"Error sending message: {ex.Message}");
            }
        }

        private void ReceiveButton_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                // 接收服务器的消息
                byte[] receivedBytes = udpClient.Receive(ref serverEndPoint);

                // 将接收到的字节数组转换为字符串
                string receivedMessage = Encoding.ASCII.GetString(receivedBytes);

                // 显示接收到的消息
                MessageListBox.Items.Add($"[RECEIVED] {receivedMessage}");
            }
            catch (Exception ex)
            {
                MessageBox.Show($"Error receiving message: {ex.Message}");
            }
        }
    }
}

UDP服务器示例：

using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Windows;

namespace UdpServerExample
{
    public partial class MainWindow : Window
    {
        private UdpClient udpServer;
        private IPEndPoint clientEndPoint;
        private Thread receiveThread;

        public MainWindow()
        {
            InitializeComponent();

            // 初始化UDP服务器
            udpServer = new UdpClient(8888);
            clientEndPoint = new IPEndPoint(IPAddress.Any, 0);

            // 开始接收消息
            receiveThread = new Thread(ReceiveMessages);
            receiveThread.Start();
        }

        private void ReceiveMessages()
        {
            try
            {
                while (true)
                {
                    // 接收客户端的消息
                    byte[] receivedBytes = udpServer.Receive(ref clientEndPoint);

                    // 将接收到的字节数组转换为字符串
                    string receivedMessage = Encoding.ASCII.GetString(receivedBytes);

                    // 在UI线程中显示接收到的消息
                    Dispatcher.Invoke(() => MessageListBox.Items.Add($"[RECEIVED] {receivedMessage}"));
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show($"Error receiving message: {ex.Message}");
            }
        }
    }
}

这两个示例应该可以帮助你入门UDP编程。由于这里只是一个简单的示例，因此在实际应用中可能需要进行更多的错误处理和安全性检查。