本文主要介绍了如何使用udp协议，多线程，让ppc和pc在同一局域网进行简单的文字收发。
说明：我的PPC端ip是192.168.0.102，服务器端为192.168.0.100,请根据实际情况配置。
配置好后，就可以开始我们的编程了。
代码如下:
PPC Code
namespace SimpleTcp
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
listBoxCallback = new AddListBoxItemCallback(AddListBoxItem);
}
// string senddate,readdate;
// NetworkStream ns;
delegate void AddListBoxItemCallback( string text);
AddListBoxItemCallback listBoxCallback;
private int port = 8001 ;
private UdpClient udpClient;
private void AddListBoxItem( string text)
{
// 如果listBoxReceive被不同的线程访问则通过委托处理;
if (listBoxReceive.InvokeRequired)
{
this .Invoke(listBoxCallback, text);
}
else
{
listBoxReceive.Items.Add(text);
listBoxReceive.SelectedIndex = listBoxReceive.Items.Count - 1 ;
}
}
private void ReceiveData()
{
// 在本机指定的端口接收
udpClient = new UdpClient(port);
IPEndPoint remote = null ;
// 接收从远程主机发送过来的信息;
while ( true )
{
try
{
// 关闭udpClient时此句会产生异常
byte [] bytes = udpClient.Receive( ref remote);
string str = Encoding.UTF8.GetString(bytes, 0 , bytes.Length);
AddListBoxItem( string .Format( " 来自{0}：{1} " , remote, str));
}
catch
{
// 退出循环，结束线程
break ;
}
}
}
/// 发送数据到远程主机
///
private void sendData()
{
UdpClient myUdpClient = new UdpClient();
IPAddress remoteIP = IPAddress.Parse(textBoxRemoteIP.Text);
if ( remoteIP == null )
{
MessageBox.Show( " 远程IP格式不正确 " );
return ;
}
IPEndPoint iep = new IPEndPoint(remoteIP, port);
byte [] bytes = System.Text.Encoding.UTF8.GetBytes(textBoxSend.Text);
try
{
myUdpClient.Send(bytes, bytes.Length, iep);
myUdpClient.Close();
textBoxSend.Focus();
}
catch (Exception err)
{
MessageBox.Show(err.Message, " 发送失败 " );
}
finally
{
myUdpClient.Close();
}
}
private void button1_Click( object sender, EventArgs e)
{
udpClient.Close();
Application.Exit();
}
private void button2_Click( object sender, EventArgs e)
{
sendData(); 大连无痛人流哪家好 http://mobile.120wtrlyy.com/
}
private void Form1_Load( object sender, EventArgs e)
{
// 获取本机第一个可用IP地址
IPAddress myIP = IPAddress.Parse( " 192.168.0.100 " );
// 为了在同一台机器调试，此IP也作为默认远程IP
textBoxRemoteIP.Text = myIP.ToString();
// 创建一个线程接收远程主机发来的信息
Thread myThread = new Thread( new ThreadStart(ReceiveData));
// 将线程设为后台运行
myThread.IsBackground = true ;
myThread.Start();
textBoxSend.Focus();
}
}
}
客户端就ok了。