C#窗体程序，创建UDP发送端，按钮1发送数据“play”到目标IP地址"192.168.10.100"和端口号8001,按钮2发送数据“pause”到目标IP地址"192.168.10.88"和端口号777,IP和端口在App.config配置文件里的完整代码

在C#中，要创建一个UDP发送端的窗体程序，并从两个不同的按钮发送数据到指定的IP地址，你需要做以下步骤：

1. 首先，在App.config文件中添加网络连接信息作为配置节点：

<configuration>
   <appSettings>
      <add key="TargetIP1" value="192.168.10.100" />
      <add key="TargetPort1" value="8001" />
      <add key="TargetIP2" value="192.168.10.88" />
      <add key="TargetPort2" value="777" />
   </appSettings>
</configuration>

2. 创建一个UdpClient类实例，用于发送数据：

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

public partial class MainForm : Form
{
    private UdpClient udpClient1;
    private UdpClient udpClient2;

    public MainForm()
    {
        InitializeComponent();
        InitializeUdpClients();
    }

    private void InitializeUdpClients()
    {
        IPAddress ip1 = IPAddress.Parse(ConfigurationManager.AppSettings["TargetIP1"]);
        int port1 = int.Parse(ConfigurationManager.AppSettings["TargetPort1"]);
        udpClient1 = new UdpClient(port1);
        udpClient1.Connect(ip1, port1);

        IPAddress ip2 = IPAddress.Parse(ConfigurationManager.AppSettings["TargetIP2"]);
        int port2 = int.Parse(ConfigurationManager.AppSettings["TargetPort2"]);
        udpClient2 = new UdpClient(port2);
        udpClient2.Connect(ip2, port2);
    }
    
    //...
}

3. 给每个按钮绑定事件处理函数，分别发送数据：

private async void ButtonSendPlay_Click(object sender, EventArgs e)
{
    string data = "play";
    await SendData(udpClient1, data); // 发送到192.168.10.100:8001
}

private async void ButtonSendPause_Click(object sender, EventArgs e)
{
    string data = "pause";
    await SendData(udpClient2, data); // 发送到192.168.10.88:777
}

private async Task SendData(UdpClient client, string message)
{
    byte[] bytes = Encoding.UTF8.GetBytes(message);
    IPEndPoint endpoint = client.Client.LocalEndPoint as IPEndPoint;
    await client.SendAsync(bytes, bytes.Length, endpoint.Address, endpoint.Port);
}