很急阿 谁有能告诉我阿?
我的Email:ling19841215@163.com

下面是我写的一个程序的一部分，帮我看看哪里不对

private IPAddress hostIP,remoteIP;
private IPEndPoint hostPoint,remotePoint;
private UdpClient uc;
int port;

private void btnSend_Click(object sender, System.EventArgs e)
{
    if(uc==null)
    {
        hostIP=IPAddress.Parse(txtHostIP.Text);
        remoteIP=IPAddress.Parse(txtRemoteIP.Text);
        port=Convert.ToInt32(txtPort.Text);
        hostPoint=new IPEndPoint(hostIP,port);
        remotePoint=new IPEndPoint(remoteIP,port);
        uc=new UdpClient(hostPoint);
    }
    string strSend =rtbSend.Text;
    byte[] byteSend = Encoding.BigEndianUnicode.GetBytes(strSend);
    uc.Send(byteSend,byteSend.Length,remotePoint);

}

private void btnStart_Click(object sender, System.EventArgs e)
{
    if(uc==null)
    {
        hostIP=IPAddress.Parse(txtHostIP.Text);
        remoteIP=IPAddress.Parse(txtRemoteIP.Text);
        port=Convert.ToInt32(txtPort.Text);
        hostPoint=new IPEndPoint(hostIP,port);
        remotePoint=new IPEndPoint(remoteIP,port);
        uc=new UdpClient(hostPoint);
    }
    Thread myThread=new Thread(new ThreadStart(run));
    myThread.Start();
}
private void run()
{
    while(true)
    {
        byte[] byteReceive=uc.Receive(ref remotePoint);
        string strReceive=Encoding.BigEndianUnicode.GetString(byteReceive);
        rtbReceive.AppendText(strReceive+"\r\n");
    }
}