C#上位機UDP通信帶曲線顯示和歷史曲線查看

1：應用程序界面

2：實現的功能

（1）常規的UDP收發操作

（2）私有通信協議的格式轉化

（3）數據的定時刷新顯示和實時存儲（txt）

（4）數據的歷史曲線查看

3：實現的方式

UDP設置的核心代碼

 private void btnStart_Click(object sender, EventArgs e)
        {
            ReceiveMessageThread = new Thread(ReceiveMessage);
            ReceiveMessageThread.IsBackground = true;
            if (btnStart.Text == "啓動")
            {
                btnStart.Text = "已啓動";
                rec_flag = true;
                //創建並啓動消息接收線程                
                ReceiveMessageThread.Start();
                IPEndPoint ipEndPoint = new IPEndPoint(IPAddress.Parse(GetLocalIP()), Convert.ToInt32(monitor_Port.Text));
                //實例化UDP客戶端
                myUdpClient = new UdpClient(ipEndPoint);
            }
            else
            {
                btnStart.Text = "啓動";
                ReceiveMessageThread.Abort();
                try
                { ReceiveMessageThread.Join(); }
                catch (ThreadAbortException)
                {

                }
                catch (Exception ex)
                {
                    //MessageBox.Show(ex.Message);
                }
                rec_flag = false;
                myUdpClient.Close();
            }
                
        }

定時刷新顯示的核心代碼：

private void refresh_curve()
        {
            while (true)
            {
                string test_time = DateTime.Now.ToString("yyyy-MM-dd-HH:mm:ss");
                string Path1 = "";

                if (starttime == "")
                {
                    Path1 = get_latest_file(Datapath);
                }
                else
                {
                    Path1 = @".\data\" + starttime + ".txt";
                }
                // 從文件中讀取並顯示每行
                string line = "";
                try
                {
                    using (StreamReader sr = new StreamReader(Path1))
                    {
                        SortedList sl = new SortedList();
                        while ((line = sr.ReadLine()) != null)
                        {
                            string[] array = line.Split('+');
                            sl.Add(array[0], array[1]);
                        }
                        // 獲取鍵的集合
                        ICollection key = sl.Keys;
                        foreach (string k in key)
                        {
                            //  Console.WriteLine(k + ": " + sl[k]);
                            Time_axis.Add(k);
                            Curve.Add(sl[k].ToString().Split(',')[type_curve]);
                        }
                    }

                }
                catch
                {
                    using (StreamReader sr = new StreamReader(get_latest_file(Datapath)))
                    {
                        SortedList sl = new SortedList();
                        while ((line = sr.ReadLine()) != null)
                        {
                            string[] array = line.Split('+');
                            sl.Add(array[0], array[1]);
                        }
                        // 獲取鍵的集合
                        ICollection key = sl.Keys;
                        foreach (string k in key)
                        {
                            //  Console.WriteLine(k + ": " + sl[k]);
                            Time_axis.Add(k);
                            Curve.Add(sl[k].ToString().Split(',')[type_curve]);
                        }
                    }
                    Console.WriteLine("沒有當前時間段數據:" + Path1);
                }
                
                //建立委託機制，防止線程間異常
                chart1.Invoke(new EventHandler(delegate
                {
                    chart1.Series[0].Points.DataBindXY(Time_axis, Curve);
                    chart1.Series[0].Name = chart_series_name[type_curve];
                }));

                Thread.Sleep(3000);
                Time_axis.Clear();
                Curve.Clear();
            }
        }

4：2個模擬客戶端發送與接收數據