private void SendData(IAsyncResult ar)
 {
     try
     {
         StateObject1 state = (StateObject1)ar.AsyncState;
         state.client.EndSend(ar);
     }
     catch
     {
         return;
     }
 }
        private void ReceiveData(object obj)
        {
            StateObject1 state = obj as StateObject1;

            try
            {
                int lenght = -1;
                lenght = state.client.Receive(state.buffer);
                AccountTemplate template = new AccountTemplate();
                template = Deserialize(state.buffer);
                int    i  = QueryTheDatabase(template);
                byte[] vs = new byte[1];
                vs[0] = Convert.ToByte(i);
                state.client.BeginSend(vs, 0, 1, SocketFlags.None, new AsyncCallback(SendData), state);
            }
            catch
            {
                return;
            }
        }
        private void AcceptClient(object objListener)
        {
            Socket listener = objListener as Socket;

            while (true)
            {
                try
                {
                    Socket       socketClient = listener.Accept();
                    StateObject1 stateObject  = new StateObject1();
                    stateObject.client = socketClient;
                    Task clientTask = new Task(new Action <object>(ReceiveData), stateObject);
                    clientTask.Start();
                }
                catch (Exception e)
                {
                    break;
                }
            }
        }