C#--winform--chart控件曲线和悬停显示

效果如下：

 

关键代码：

【1】 窗体加载的时候

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1	InitCahrt(this.chart_trace,"Torque/Angle");

　　

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/// <summary> /// 初始化chart图标，设置一些样式 /// </summary> /// <param name="chart"></param> /// <param name="chartName"></param> private void InitCahrt(Chart chart, string chartName) {     chart.Series.Clear();     ChartHelper.AddSeries(chart, chartName, SeriesChartType.Spline, Color.FromArgb(100, 46, 199, 201), Color.Red, false);     ChartHelper.SetTitle(chart, "拧紧曲线图", new Font("微软雅黑", 10), Docking.Bottom, Color.Black);     ChartHelper.SetStyle(chart, Color.Transparent, Color.Black);     ChartHelper.SetLegend(chart, Docking.Top, StringAlignment.Center, Color.Transparent, Color.Black);     ChartHelper.SetXY(chart, "角度.Deg", "扭矩.Nm", StringAlignment.Far, Color.Black, Color.Black, AxisArrowStyle.None, 50, 0.2);     ChartHelper.SetMajorGrid(chart,true,true, Color.Gray, 100, 1); }

　　

【2】绘制曲线和网格线，间距等设置

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private void ITool_TracePointsEvent(List<double> arg1, List<double> arg2) {     this.BeginInvoke(new Action(() =>     {                   double xMin = arg1.Min();         double xMax = arg1.Max();                      //X间隔         double xInterval = Math.Round(xMax / 15,1) ;         chart_trace.ChartAreas[0].AxisX.Interval = xInterval;         //X轴网格的间距         chart_trace.ChartAreas[0].AxisX.MajorGrid.Interval = xInterval*2;         //X轴最小和最大         chart_trace.ChartAreas[0].AxisX.Minimum = xMin;         chart_trace.ChartAreas[0].AxisX.Maximum = xMax+ xInterval;           //网格线设置为虚线         chart_trace.ChartAreas[0].AxisX.MajorGrid.LineDashStyle = ChartDashStyle.Dash;         chart_trace.ChartAreas[0].AxisY.MajorGrid.LineDashStyle = ChartDashStyle.Dash;                   double yMin = arg2.Min();         double yMax = arg2.Max();         //Y间隔         double yInterval = Math.Round(yMax / 15, 1);         chart_trace.ChartAreas[0].AxisY.Interval = yInterval;         //Y轴网格的间距         chart_trace.ChartAreas[0].AxisY.MajorGrid.Interval = yInterval * 2;         //Y轴最小和最大         chart_trace.ChartAreas[0].AxisY.Minimum = yMin;         chart_trace.ChartAreas[0].AxisY.Maximum = yMax+yInterval;           this.chart_trace.Series[0].Points.DataBindXY(arg1,arg2);     })); }

　　

【3】鼠标悬停显示

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//鼠标悬停显示曲线点的值 System.Windows.Forms.DataVisualization.Charting.ToolTipEventArgs toolTipEventArgs; private void chart_trace_GetToolTipText(object sender, ToolTipEventArgs e) {     toolTipEventArgs = e;       if (e.HitTestResult.ChartElementType == System.Windows.Forms.DataVisualization.Charting.ChartElementType.DataPoint)     {         int i = e.HitTestResult.PointIndex;         System.Windows.Forms.DataVisualization.Charting.DataPoint dp = e.HitTestResult.Series.Points[i];         e.Text = string.Format("A:{0},T:{1}", dp.XValue.ToString(), dp.YValues[0]);     } }