1、主界面
2、源程序
Send
public partial class formUdpSend : Form
{
//声明一个UdpClient对象
UdpClient udpClient;
public formUdpSend()
{
InitializeComponent();
//实例化UdpClient对象
udpClient = new UdpClient();
} private void btnSend_Click(object sender, EventArgs e)
{
//获取发送信息
string message = this.txtMessage.Text;
//获取发送数据
byte[] data = System.Text.Encoding.UTF8.GetBytes(message);
udpClient.Connect(IPAddress.Parse(this.txtIP.Text),);
udpClient.Send(data, data.Length);
this.txtMessage.Text = "";
}
}
Receive
public partial class formUdpReceive : Form
{
UdpClient udpClient;
Thread thread;
public formUdpReceive()
{
InitializeComponent();
//不捕获对错误线程的调用
CheckForIllegalCrossThreadCalls = false;
udpClient = new UdpClient();
}
//设置监听
public void Listen()
{
IPEndPoint iep = null;
while (true)
{
string data = System.Text.Encoding.UTF8.GetString(udpClient.Receive(ref iep));
this.lbReceive.Items.Add(data);
}
}
private void btnReceive_Click(object sender, EventArgs e)
{
thread = new Thread(new ThreadStart(Listen));
thread.IsBackground = true;
thread.Start();
} private void formUdpReceive_Load(object sender, EventArgs e)
{ }
}