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public CheckOnline()
{
InitializeComponent();
TimerCallback delegate_CheckOnline = new TimerCallback(CheckOnline.CheckOnlineStatus);
System.Threading.Timer timer = new System.Threading.Timer(delegate_CheckOnline, null, 0, 1000);
// Thread.Sleep(Timeout.Infinite);
}
public static void CheckOnlineStatus(object s)
{
// 发送广播信号,通报自己存在;
IPEndPoint lan = new IPEndPoint(IPAddress.Parse("192.168.2.255"), 9000);
// IPEndPoint localEP_Send=new IPEndPoint(IPAddress.Parse("192.168.2.250"),0);
UdpClient Client = new UdpClient();
byte[] hello = Encoding.ASCII.GetBytes("hello");
Client.Send(hello, hello.Length,lan);
}