C# と VB.NET の質問掲示板

       private void btnHome_Click(object sender, EventArgs e)
        {
            Form2 form2 = new Form2(this);
            form2.Show();
        }

        private void btnStart1_Click(object sender, EventArgs e)
        {
            if (chkRandom.Checked) {}
            else 
            { 
                if (client == null || client.State != OpcClientState.Connecting)
                {
                    try
                    {
                        string url = "opc.tcp://192.168.0.1:4840";
                        string user = "admin";
                        string password = "admin";

                        client = new OpcClient(url);
                        client.Security.UserIdentity = new OpcClientIdentity(user, password);
                        lbltext.Text = "通信開始";

                        client.Connect();
                        
                        lbltext.Text = "通信ＯＫ";
                    }
                    catch (Exception ex)
                    { 
                        lbltext.Text = "通信ＮＧ";
                    }
                }
            }
            
            startTime = DateTime.UtcNow;
           
            dataLoadTimer = new Timer();
            dataLoadTimer.Interval = 1000; 
            dataLoadTimer.Tick += (s, a) => DataLoadTimer_Tick();//////　a でいいのか❓
            dataLoadTimer.Start();

        }

        private void DataLoadTimer_Tick()
        {
            
            LoadData();
        }

        private void btnStop1_Click(object sender, EventArgs e)
        {
            dataLoadTimer.Stop();
        }

        private void btnClose_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }

        private Chart CreateChart(IList<double> doubles)
        {

            Chart chart = new Chart();
            chart.Size = new System.Drawing.Size(980, 300);
            chart.ChartAreas.Add(new ChartArea());
            chart.Series.Add("DataSeries");
            chart.Series["DataSeries"].ChartType = SeriesChartType.Line;
            chart.Series["DataSeries"].BorderWidth = 2; 

                    chart.ChartAreas[0].AxisX.LabelStyle.Enabled = true;
                    for (int i = 0; i < doubles.Count; i++)
                    {
                        chart.Series["DataSeries"].Points.AddXY(i, doubles[i]);
                    }

            chart.ChartAreas[0].AxisX.Minimum = 0;    
            chart.ChartAreas[0].AxisX.Maximum = doubles.Count - 1;

            return chart;
        }


        private void SlideData(Chart chart, List<double> list, double newData)
        {
            list.Add(newData);
            list.RemoveAt(0);

            chart.Series["DataSeries"].Points.Clear();
            for (int x = 0; x < list.Count; x++)
            {
                chart.Series["DataSeries"].Points.AddXY(x, list[x]);
            }
        }

        private void LoadData()
        {
            
                try
                {
                    var currentTime = DateTime.UtcNow;
                    var elapsedTime = currentTime - startTime;

                    var flowNode = "ns=3;i=16844032";
                    var accumflowNode = "ns=3;i=16843776";
                    var pressureNode = "ns=3;i=16844544";
                    var tempNode = "ns=3;i=16844288";

                    var flow = client.ReadNode(flowNode);
                    var accumFlow = client.ReadNode(accumflowNode);
                    var pressure = client.ReadNode(pressureNode);
                    var temp = client.ReadNode(tempNode);

                    double flowData = Convert.ToInt32(flow.Value) / 1000.0;
                    double accumeData = Convert.ToInt32(accumFlow.Value) / 1000.0;
                    double pressureData = Convert.ToInt32(pressure.Value) / 1000.0;
                    double tempData = Convert.ToInt32(temp.Value) / 10.0;

                   
                    SlideData(upperChart, upperList, pressureData);
                    SlideData(lowerChart, lowerList, tempData);


                    //-------保存内容--------
                    DateTime dt = DateTime.Now;
                    string date = dt.ToString("yyyy/M/d");
                    string time = dt.ToString("HH:mm:ss");

                    string data1 = flowData.ToString();
                    string data2 = tempData.ToString();
                    string data3 = pressureData.ToString();
                    string data4 = accumeData.ToString();

                    string price = G.priceData.ToString();


                    SaveDataToCSV(date, time, data1, data2,data3,data4,price);

                    upperChart.ChartAreas[0].AxisX.Minimum = dataCounter >= cycletime ? dataCounter - cycletime : 0;
                    upperChart.ChartAreas[0].AxisX.Maximum = dataCounter;

                    lowerChart.ChartAreas[0].AxisX.Minimum = dataCounter >= cycletime ? dataCounter - cycletime : 0;
                    lowerChart.ChartAreas[0].AxisX.Maximum = dataCounter;


                    while (upperChart.Series["DataSeries"].Points.Count > 0 && upperChart.Series["DataSeries"].Points[0].XValue < dataCounter - cycletime)
                    {
                        upperChart.Series["DataSeries"].Points.RemoveAt(0);
                        lowerChart.Series["DataSeries"].Points.RemoveAt(0);

                        upperChart.ChartAreas[0].AxisX.Maximum = dataCounter;
                        lowerChart.ChartAreas[0].AxisX.Maximum = dataCounter;
                    }
                    
                    lbltext.Text = "通信中";
                }
                catch (Exception ex)
                {
                    lbltext.Text = ex.Message;
                    lbltext.Text = ex.StackTrace;
                }
        }


        private void SaveDataToCSV(string date, string time, string data1,string data2, string data3, string data4, string price)
        {
            try
            {
                string filePath = G.csvDataFilePath + DateTime.Now.ToString(@"yyyy\-M\-d") + ".csv";
               
                using (StreamWriter sw = File.AppendText(filePath))
                {
                    sw.WriteLine($"{date},{time},{data1},{data2},{data3},{data4},{price}");
                }
            }
            catch (Exception ex)
            {
                timer.Enabled = false;
                MessageBox.Show("以下の理由でファイルが開けません。\n" + ex.Message);
                timer.Enabled = true;
            }
        }
    }
}