将StripeLine在顶级系列（调整Z-指数/ Z顺序）

问题描述

我建立一个柱形图与 System.Web.UI.DataVisualization.Charting 和希望显示虚线重新present的平均水平。 StripeLine 似乎正是我要找的只是它位于下/列的后面（见例）。

I'm building a Column chart with System.Web.UI.DataVisualization.Charting and would like to show a dotted line to represent an average. StripeLine seems to be exactly what I'm looking for except it sits under/behind the columns (see example).

有没有办法来调整Z-指数的 StripeLine ，使其在前面显示/之上的系列？

Is there a way to adjust the "Z-Index" of a StripeLine so that it is shown in front of/on top of the Series?

我没有看到这个属性，并改变我添加系列和 StripeLine 没有按'订单ŧ有所作为。

I don't see a property for this and changing the order I add the Series and StripeLine doesn't make a difference.

推荐答案

您可以使用注释

double avg = Chart1.Series[0].Points.Average(p => p.XValue);
double lineHeight = avg;
HorizontalLineAnnotation ann = new HorizontalLineAnnotation();
ann.AxisX = Chart1.ChartAreas[0].AxisX;
ann.AxisY = Chart1.ChartAreas[0].AxisY;
ann.IsSizeAlwaysRelative = false;
ann.AnchorY = lineHeight;
ann.IsInfinitive = true;
ann.ClipToChartArea = Chart1.ChartAreas[0].Name; ann.LineColor = Color.Red; ann.LineWidth = 3;
Chart1.Annotations.Add(ann);

HTML code

HTML Code

<asp:Chart runat="server" ID="Chart1"   ImageStorageMode="UseImageLocation"  Width="800px" Height="400px" OnClick="Chart1_Click">
    <ChartAreas  >
    <asp:ChartArea></asp:ChartArea>
    </ChartAreas>
    <series>  
           <asp:Series Name="Students" BorderColor="180, 26, 59, 105">  
            <Points>
                <asp:DataPoint AxisLabel="jon" XValue="5" YValues="4" />
                <asp:DataPoint AxisLabel="kon" XValue="15" YValues="44" />
                <asp:DataPoint AxisLabel="pol" XValue="85" YValues="90" />
            </Points>
           </asp:Series>                        
      </series> 
</asp:Chart>

code为文本批注

Code for Text Annotation

TextAnnotation txtAnn = new TextAnnotation();
txtAnn.AxisX = Chart1.ChartAreas[0].AxisX;
txtAnn.AxisY = Chart1.ChartAreas[0].AxisY;
txtAnn.IsSizeAlwaysRelative = false;
txtAnn.AnchorY = lineHeight;
txtAnn.AnchorX = Chart1.Series[0].Points.Last().XValue;
txtAnn.AnchorAlignment = ContentAlignment.BottomLeft;
txtAnn.Text = "DivisionOne(35.5)";
txtAnn.ClipToChartArea = Chart1.ChartAreas[0].Name; txtAnn.ForeColor =  Color.Red; 
Chart1.Annotations.Add(txtAnn);

您可以在这里获得更多的信息。

You can get more information here

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