ConstantLine.ShowBehind Property
Gets or sets a value that specifies whether the constant line is displayed behind the other chart elements on the diagram.
Namespace: DevExpress.XtraCharts
Assembly: DevExpress.XtraCharts.v23.2.dll
NuGet Package: DevExpress.Charts
Declaration
[XtraChartsLocalizableCategory(XtraChartsCategory.Behavior)]
public bool ShowBehind { get; set; }Property Value
| Type | Description |
|---|---|
| Boolean | true if the constant line is displayed behind the other chart elements; false if the constant line is displayed in front of the other chart elements. |
Remarks
Use the ShowBehind property to specify how the current constant line is displayed within the chart control’s diagram.
Set the ShowBehind property to true if you need to position a constant line behind the other chart elements (such as bars, point markers or lines that connect point markers, for instance) so that these elements overlap the line (including the line’s title) in their intersections.
By default, this property is set to true and a constant line is displayed in front of most chart elements (with the only exception being the filled series labels - those whose FillStyle2D.FillMode property is not set to FillMode.Empty) so that the whole line is visible.
| ShowBehind = False | ShowBehind = True |
|---|---|
 |
 |
For more information, refer to Constant Lines.
Example
This example demonstrates how a constant line can be created and customized at runtime.
Since constant lines belong to a diagram’s axis, it’s first required to cast your diagram object to the appropriate diagram’s type. After that, it’s possible to access axes and manage their constant lines collection.
// Cast the chart's diagram to the XYDiagram type, to access its axes.
XYDiagram diagram = (XYDiagram)chartControl1.Diagram;
// Create a constant line.
ConstantLine constantLine1 = new ConstantLine("Constant Line 1");
diagram.AxisY.ConstantLines.Add(constantLine1);
// Define its axis value.
constantLine1.AxisValue = 7;
// Customize the behavior of the constant line.
constantLine1.Visible = true;
constantLine1.ShowInLegend = true;
constantLine1.LegendText = "Some Threshold";
constantLine1.ShowBehind = false;
// Customize the constant line's title.
constantLine1.Title.Visible = true;
constantLine1.Title.Text = "Constant Line Title";
constantLine1.Title.TextColor = Color.Red;
constantLine1.Title.Antialiasing = false;
constantLine1.Title.Font = new Font("Tahoma", 14, FontStyle.Bold);
constantLine1.Title.ShowBelowLine = true;
constantLine1.Title.Alignment = ConstantLineTitleAlignment.Far;
// Customize the appearance of the constant line.
constantLine1.Color = Color.Red;
constantLine1.LineStyle.DashStyle = DashStyle.Dash;
constantLine1.LineStyle.Thickness = 2;
Related GitHub Examples
The following code snippet (auto-collected from DevExpress Examples) contains a reference to the ShowBehind property.
Note
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