我试图创建两个共享相同轴的饼图。有没有人有使用MSChart完成此任务的代码示例?
到目前为止,这是我的代码:
Chart chart = new Chart();
chart.Width = 800;
string PreContractSeriesName = "PreContract";
string ContractSeriesName = "Contract";
//two chart areas
chart.ChartAreas.Add(PreContractSeriesName);
chart.ChartAreas.Add(ContractSeriesName);
//two pie charts, so two series
chart.Series.Add(PreContractSeriesName);
chart.Series.Add(ContractSeriesName);
//add series to chart area
chart.Series[PreContractSeriesName].ChartArea = PreContractSeriesName;
chart.Series[ContractSeriesName].ChartArea = ContractSeriesName;
//set as pie chart
chart.Series[PreContractSeriesName].ChartType = SeriesChartType.Pie;
chart.Series[ContractSeriesName].ChartType = SeriesChartType.Pie;
chart.ChartAreas[PreContractSeriesName].AlignmentOrientation = AreaAlignmentOrientations.Horizontal;
chart.ChartAreas[ContractSeriesName].AlignmentOrientation = AreaAlignmentOrientations.Horizontal;
chart.Series[PreContractSeriesName].Points.AddXY("source1", 100);
chart.Series[PreContractSeriesName].Points.AddXY("source2", 200);
chart.Series[PreContractSeriesName].Points.AddXY("source3", 300);
chart.Series[PreContractSeriesName].Points.AddXY("source4", 400);
chart.Series[PreContractSeriesName].Points.AddXY("source5", 500);
chart.Series[ContractSeriesName].Points.AddXY("source1", 140);
chart.Series[ContractSeriesName].Points.AddXY("source2", 240);
chart.Series[ContractSeriesName].Points.AddXY("source3", 340);
chart.Series[ContractSeriesName].Points.AddXY("source4", 440);
chart.Series[ContractSeriesName].Points.AddXY("source5", 540);
using (MemoryStream memStream = new MemoryStream())
{
chart.SaveImage(memStream, ChartImageFormat.Jpeg);
return File(memStream.ToArray(), "image/jpeg");
}
我的代码会产生以下图表:
我想知道:
编辑:
感谢用户TaW
,这是我的更新代码 Chart chart = new Chart();
chart.Width = 800;
string PreContractSeriesName = "PreContract";
string ContractSeriesName = "Contract";
//two chart areas
chart.ChartAreas.Add(PreContractSeriesName);
chart.ChartAreas.Add(ContractSeriesName);
//two pie charts, so two series
chart.Series.Add(PreContractSeriesName);
chart.Series.Add(ContractSeriesName);
//add series to chart area
chart.Series[PreContractSeriesName].ChartArea = PreContractSeriesName;
chart.Series[ContractSeriesName].ChartArea = ContractSeriesName;
//position chart areas side by side
chart.ChartAreas[PreContractSeriesName].Position = new ElementPosition(2, 5, 48, 80);
chart.ChartAreas[ContractSeriesName].Position = new ElementPosition(50, 5, 48, 80);
chart.Legends.Add(new Legend() {
Alignment = StringAlignment.Center,
Docking = Docking.Bottom }
);
chart.Series[ContractSeriesName].IsVisibleInLegend = false;
//set as pie chart
chart.Series[PreContractSeriesName].ChartType = SeriesChartType.Pie;
chart.Series[ContractSeriesName].ChartType = SeriesChartType.Pie;
chart.Series[PreContractSeriesName].Points.AddXY("source1", 100);
chart.Series[PreContractSeriesName].Points.AddXY("source2", 200);
chart.Series[PreContractSeriesName].Points.AddXY("source3", 300);
chart.Series[PreContractSeriesName].Points.AddXY("source4", 400);
chart.Series[PreContractSeriesName].Points.AddXY("source5", 500);
chart.Series[ContractSeriesName].Points.AddXY("source1", 140);
chart.Series[ContractSeriesName].Points.AddXY("source2", 240);
chart.Series[ContractSeriesName].Points.AddXY("source3", 340);
chart.Series[ContractSeriesName].Points.AddXY("source4", 440);
chart.Series[ContractSeriesName].Points.AddXY("source5", 540);
答案 0 :(得分:2)
以下是如何在ChartAreas
图表中对齐两个Chart
ca1和ca2:
ca1.Position = new ElementPosition(2, 5, 48, 80);
ca2.Position = new ElementPosition(50, 5, 48, 80);
chart.Legends[0].Docking = Docking.Bottom;
chart.Legends[0].Alignment = StringAlignment.Center;
请注意,这会将位置硬编码为图表大小的百分比。
您尝试的对齐属性实际上是关于对齐数据而不是定位图表区域。看他们的AreaAlignmentStyles
!要控制ChartArea
的展示位置,我们需要保留默认Auto
设置并选择我们自己的数字。
我向左和向右留下2%,让两个ChartAreas
直接坐在一起。我添加了颜色,你可以看到它是什么..
我在Legend
的底线上留下了15%,它停靠在底部并居中。
您需要使用自己的号码。
另请注意,默认情况下,两个馅饼各自获得自己的图例条目。要压制一组条目,您可以将此属性设置为Series S2
:
S2.IsVisibleInLegend = false;
另一个例子see here!