C#刷新chart控件方法及task的启停功能记录

首先进行Chart控件的初始化，以我记录力传感器的为例

 #region  曲线初始化
        public void IntiCHure()
        {
            this.chart1.ChartAreas.Clear();
            ChartArea chartArea1 = new ChartArea("C1");
            chartArea1.BackColor = System.Drawing.SystemColors.Control;
            this.chart1.ChartAreas.Add(chartArea1);
            //定义存储和显示点的容器
            this.chart1.Series.Clear();
            Series series1 = new Series("s1");
            Series series2 = new Series("s2");
            Series series3 = new Series("s3");
            Series series4 = new Series("s4");
            Series series5 = new Series("s5");
            Series series6 = new Series("s6");
            series1.ChartArea = "C1";
            series2.ChartArea = "C1";
            series3.ChartArea = "C1";
            this.chart1.Series.Add(series1);
            this.chart1.Series.Add(series2);
            this.chart1.Series.Add(series3);
            this.chart1.Series.Add(series4);
            this.chart1.Series.Add(series5);
            this.chart1.Series.Add(series6);
            //设置图表显示样式
            this.chart1.ChartAreas[0].AxisX.MajorGrid.LineColor = System.Drawing.Color.Silver;
            this.chart1.ChartAreas[0].AxisY.MajorGrid.LineColor = System.Drawing.Color.Silver;
            //设置标题
            this.chart1.Titles.Clear();
            this.chart1.Titles.Add("S01");
            this.chart1.Titles[0].Text = "力值显示";
            this.chart1.Titles[0].Alignment = System.Drawing.ContentAlignment.MiddleLeft;
            this.chart1.Titles[0].ForeColor = Color.RoyalBlue;
            this.chart1.Titles[0].Font = new System.Drawing.Font("Microsoft Sans Serif", 12F);
            this.chart1.Series[0].ChartType = SeriesChartType.Line;
            this.chart1.Series[1].ChartType = SeriesChartType.Line;
            this.chart1.Series[2].ChartType = SeriesChartType.Line;
            this.chart1.Series[3].ChartType = SeriesChartType.Line;
            this.chart1.Series[4].ChartType = SeriesChartType.Line;
            this.chart1.Series[5].ChartType = SeriesChartType.Line;
            //设置图表显示样式
            this.chart1.Series[0].Color = Color.Orange;
            this.chart1.Series[1].Color = Color.Green;
            this.chart1.Series[2].Color = Color.Red;
            this.chart1.Series[3].Color = Color.Blue;
            this.chart1.Series[4].Color = Color.DarkViolet;
            this.chart1.Series[5].Color = Color.Brown;
            //this.chart1.ChartAreas[0].AxisY.Title = "力值";
            this.chart1.ChartAreas[0].AxisY.IsStartedFromZero = false;
            this.chart1.Series[0].Points.Clear();
        }
        #endregion

初始化后再进行数据的绑定

 public void ForceDataShow(Queue<Double> Force, string RD, int index,CheckBox Cbx)
        {
                if (Force.Count > CountNum)//当组中的数据大于曲线的长度时，剔除最前面一个值
                {
                    for (int i = 0; i < num; i++)//Num为组一次更新的点数
                    {
                        Force.Dequeue();
                    }
                }
                for (int i = 0; i < num; i++)
                {
                    Force.Enqueue(Convert.ToDouble(RD));//下图为增加点数到组的最后面一个值
                }
                if (Cbx.Checked == true)
                {

                    this.BeginInvoke(new MethodInvoker(() =>
                    {
                        //this.chart1.Series[index].Points.Clear();
                        //for (int J = 0; J < Force.Count; J++)
                        //{
                        //    this.chart1.Series[index].Points.AddXY(TE.ElementAt(J).ToString("0.00"), Force.ElementAt(J));
                        //}

                        this.chart1.Series[index].Points.DataBindY(Force);  //绑定值到对应曲线中
                    }));

                }

然后是刷新的方法，尝试过Timer和Task两种刷新方法，发现用Timer的刷新频率过高时会出现界面卡顿的现象，而Task不会出现卡顿问题；

 private void timer1_Tick(object sender, EventArgs e)
        {
            if (Interlocked.Exchange(ref inTimer, 1) == 0)
            {
                ForceList = DisposeForce(RobotData.RobotValue.Value.ToString());
                ForceDataShow(ForceXData,ForceList[0], 0, cbx_Fx);
                ForceDataShow(ForceYData,ForceList[1], 1, cbx_Fy);
                ForceDataShow(ForceZData,ForceList[2], 2, cbx_Fz);
                Interlocked.Exchange(ref inTimer, 0);
            }
            
        }

推荐使用Task

 private void MainForm1_Load(object sender, EventArgs e)
        {
            task2 = new System.Threading.Tasks.Task(async () =>
            {
                while (true)
                {
                    if (token.IsCancellationRequested)
                    {
                        return;
                    }
                    // 初始化为true时执行WaitOne不阻塞
                    resetEvent.WaitOne();
                    ForceList = DisposeForce(RobotData.RobotValue.Value.ToString());
                    ForceDataShow(ForceXData, ForceList[0], 0, cbx_Fx);
                    ForceDataShow(ForceYData, ForceList[1], 1, cbx_Fy);
                    ForceDataShow(ForceZData, ForceList[2], 2, cbx_Fz);
                    Interlocked.Exchange(ref inTimer, 0);
                    await System.Threading.Tasks.Task.Delay(10);
                }
                
            });
        }

Task的启停操作：https://www.cnblogs.com/zhengzc/p/10724839.html