c# MS图表控制-两个问题
本文关键字:-两 问题 控制 MS | 更新日期: 2023-09-27 17:48:56
所以我用MS chart Control制作了这个范围条形图。我有两个问题:
- 我如何实现一个事件处理程序,当用户双击一个系列?我哪儿都没看到。
- 由于某种原因,我的X轴上的滚动条(有趣的是,图表控制似乎认为是Y轴…)似乎是部分透明的,出于某种原因…有人能解释一下为什么会这样吗?
这是我到目前为止的代码,从我在网上找到的一个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 +
"'r'n'r'n" + jobThis.ClientCompanyName +
"'r'n'r'n" + 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 < datFirst)
{
datFirst = (DateTime)jobFirst.HireFrom;
}
}
}
if (jobFirst.HireTo != null)
{
if (datLast == null)
{
datLast = (DateTime)jobFirst.HireTo;
}
else
{
if (jobFirst.HireTo > 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();
}
}
没有特定的事件能够处理数据点点击,但您可以使用MouseClick
事件加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...
}
}
}
图表还有一个双击事件
private void chart_MouseDoubleClick(object sender, MouseEventArgs e)