windows应用程序 窗口突然关闭,没有引发任何异常


        private void button1_Click(object sender, EventArgs e)
        {
            if (Listen.Text == "Listen")
            {                Listen.Text = "UnListen";               
                
                con = new conVal();                con.andon = new LinkAndon();                con.sendmes = new Queue<byte[]>();                con.buffer= new byte[1024];                mt = new Mutex(true, "mymt");
                
              //  Thread T2 = new Thread(SendMessage);
                
                AsyncCallback ac = new AsyncCallback(AcceptData);                Server = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);                Server.Bind(serverIP);                Server.Listen(10);                Server = Server.Accept();                //erver.Receive(data);                
                Server.BeginReceive(con.buffer, 0, con.buffer.Length, SocketFlags.None, ac, (object)con);
                
                System.Threading.Timer tm = new System.Threading.Timer(tm_Elapsed, (object)con, 0, 5000);               // T2.Start((object)con);
            }
            else
            {                Server.Disconnect(false);                Listen.Text = "Listen";
            
            }
                    }        class conVal
        {
            //public Socket con;            public ANDON.LinkAndon andon;            public Queue<byte[]> sendmes;            public bool go=true;            public byte[] buffer;
        
        }        private conVal con;
        void tm_Elapsed(object or)
        {            conVal cc = (conVal)or;            Dictionary<string, string>[] par = cc.andon.MachineStatusWrite();            foreach (Dictionary<string, string> para in par)
            {
                string ex = "<Andon_alarm ";                int i=1;                string pa="";                if (para["DEVICE_ID"] == "1")
                {
 
                    pa+="Bstate="+para["STATE"]+" ";
                
                }else pa+="Lstate="+para["STATE"]+" ";                i++;
                ex += "tokens=" + i.ToString() + pa.ToString()+"comm='test'/>";                Command cd = new Command(9, para["DEVICE_ID"], ex);                byte[] combyte = Encoding.ASCII.GetBytes(cd.CommandText);                byte[] ct = new byte[] { 0x0, 0x0, 0x0, (byte)combyte.Length };                IEnumerable<byte> sou = ct.Concat(combyte);                con.buffer=sou.ToArray();                Server.BeginSend(con.buffer,0,con.buffer.Length, SocketFlags.None, SendMessage, (object)con.buffer);               // cc.sendmes.Enqueue(sou.ToArray());                cc.andon.updateEventState(para["ID"]);               
            }
   
        }        private ANDON.LinkAndon ad;        private void SendMessage(IAsyncResult result)
        {
            try
            {                //conVal con = (conVal)result.AsyncState;                //while (con.go)
                //{                //    if (con.sendmes.Count() != 0)
                //    {                //       // mt.WaitOne();                //        byte[] sou = con.buffer;                //        //Server.Send(sou, sou.Length, SocketFlags.None);                //       // mt.ReleaseMutex();
                //    }                //}
            }
            catch (Exception e)
            { 
            
            
            }
        
        
        
        }        private void AcceptData(IAsyncResult result)
        {
            
           // while (true)
          //  {
                string txt;                conVal con = (conVal)result.AsyncState;                txt=Encoding.ASCII.GetString(con.buffer);                Command cd = new Command(con.buffer);                switch(cd.act)
                {
                    case action.ANDON_ALARM:                ad = new ANDON.LinkAndon();                Dictionary<string, string> par = new Dictionary<string, string>();                par.Add("EQUIP_ID", cd.equpstr);                par.Add("EVENT_COMMENT", cd.tokens["Comm"]);                par.Add("EVENT_TYPE", cd.tokens["type"]);                par.Add("MSG_ID", cd.times);                par.Add("STATE", cd.tokens["state"]);                par.Add("TIST", cd.timestr);                par.Add("USER_ID", cd.tokens["user"]);                par.Add("type",cd.tokens["type"]);
                
                ad.AlarmRecive(par);break;
                }                string ret = cd.FeedBackCommand();                byte[] combyte = Encoding.ASCII.GetBytes(ret);                byte[] cx = new byte[] { 0x0, 0x0, 0x0, (byte)combyte.Length };                IEnumerable<byte> sou = cx.Concat(combyte);              //  mt.WaitOne();            //    con.sendmes.Enqueue(sou.ToArray());
                con.buffer = sou.ToArray();
               // mt.ReleaseMutex();
                //Server.Send(sou.ToArray(),sou.Count(),SocketFlags.None);                Server.BeginSend(con.buffer, 0, con.buffer.Length, SocketFlags.None, SendMessage, (object)con.buffer);                SetText(txt,1);                SetText(ret, 0);           // }
            
        上面的程序几个方法执行完了  窗口就突然关闭了  求教阿  手足无措