C#MS图表控制 – 两个问题
所以我用MS Chart Control制作了这个范围条形图。 我有两个问题:
- 如何在用户双击系列时实现事件处理程序? 我什么都看不到。
- 出于某种原因,我的X轴上的滚动条(有趣的是,图表控件似乎认为是Y轴…)似乎部分透明出于某种原因…任何人都可以解释为什么这可能是?
到目前为止,这是我的代码,我在网上的某个地方发现了一个PDF(是的,我知道,它很乱,需要整理):
private void PopulateGantt() { foreach (Job jobThis in lstJobs) { if ((jobThis.HireFrom != null) && (jobThis.HireTo != null)) { string xlabel = string.Empty; double xordinal = 0; double yplot1 = 0; double yplot2 = 0; yplot1 = (double)((DateTime)jobThis.HireFrom).ToOADate(); yplot2 = (double)((DateTime)jobThis.HireTo).ToOADate()+1; // Use a different series for each datapoint Series seriesInstance = new Series(); // For Gantt charts, we want a RangeBar graph type seriesInstance.ChartType = SeriesChartType.RangeBar; // Have a start and end date so plotting 2 points on the y-axis seriesInstance.YValuesPerPoint = 2; // We want to draw datapoint side by side (night is day?) seriesInstance.CustomProperties = "DrawSideBySide=false"; // Add the datapoint to the series, specifying tooltiptext, colorand label xordinal = lstJobs.IndexOf(jobThis); //(double)itemIndex; seriesInstance.Points.AddXY(xordinal, yplot1, yplot2); //seriesInstance.Points[0].Color = resourceColor; seriesInstance.Points[0].AxisLabel = xlabel; seriesInstance.Label = jobThis.Number + jobThis.Type + " - " + jobThis.ClientCompanyName; seriesInstance.Points[0].ToolTip = jobThis.Number + jobThis.Type + "rnrn" + jobThis.ClientCompanyName + "rnrn" + jobThis.BriefDescription; seriesList.Add(seriesInstance); } chtHC.Series.Clear(); foreach (Series plotSeries in seriesList) { chtHC.Series.Add(plotSeries); } // Force x-axis to show each task or resource chtHC.ChartAreas[0].AxisX.Interval = 1; // Set y-axis to show each day of the month chtHC.ChartAreas[0].AxisY.Interval = 1; // Set x-axis to show in reversed order so dates are displayed leftto-right //chtHC.ChartAreas[0].AxisY.IsReversed = true; //chtHC.ChartAreas[0].AxisX // Set other y-axis properties chtHC.ChartAreas[0].AxisY.IsStartedFromZero = false; chtHC.ChartAreas[0].AxisY.IsMarginVisible = false; chtHC.ChartAreas[0].AxisY.IntervalType = DateTimeIntervalType.Days; // Set the y-axis labels DateTime? datFirst = null;// = new DateTime(); DateTime? datLast = null; //= new DateTime(); //datFirst = (DateTime)lstJobs[0].HireFrom; foreach (Job jobFirst in lstJobs) { if (jobFirst.HireFrom != null) { if (datFirst == null) { datFirst = (DateTime)jobFirst.HireFrom; } else { if (jobFirst.HireFrom datLast) { datLast = (DateTime)jobFirst.HireTo; } } } } if ((datFirst != null)) { //datLast = ((DateTime)datFirst).AddDays(21); chtHC.ChartAreas[0].AxisY.Minimum = ((DateTime)datFirst).AddDays(-1).ToOADate(); chtHC.ChartAreas[0].AxisY.Maximum = ((DateTime)datLast).AddDays(+1).ToOADate(); } chtHC.ChartAreas[0].CursorY.AutoScroll = true; chtHC.ChartAreas[0].AxisY.ScaleView.Zoomable = true; chtHC.ChartAreas[0].AxisY.ScaleView.SizeType = DateTimeIntervalType.Days; //chtHC.ChartAreas[0].AxisY.LabelStyle.Format = "MMM dd ddd"; //chtHC.ChartAreas[0].AxisY.LabelStyle.Format = "ddd MMM dd"; chtHC.ChartAreas[0].AxisY.LabelStyle.Format = "ddd dd/MM/yyyy"; //chtHC.ChartAreas[0].AxisX.// Force redraw of chart chtHC.ChartAreas[0].AxisY.ScaleView.Zoom(chtHC.ChartAreas[0].AxisY.Minimum, chtHC.ChartAreas[0].AxisY.Minimum+21); chtHC.ChartAreas[0].AxisY.ScrollBar.ButtonStyle = ScrollBarButtonStyles.SmallScroll; chtHC.ChartAreas[0].AxisY.ScaleView.SmallScrollSize = 1; chtHC.Update(); } }
没有特定事件能够处理数据点击,但您可以使用MouseClick
事件和HitTest
方法,例如:
void chart1_MouseClick(object sender, MouseEventArgs e) { var pos = e.Location; var results = chart1.HitTest(pos.X, pos.Y,false, ChartElementType.DataPoint); foreach (var result in results) { if (result.ChartElementType == ChartElementType.DataPoint) { // use result.Series etc... } } }
图表也有双击事件
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private void chart_MouseDoubleClick(object sender, MouseEventArgs e)
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