corelibraries-devexpress-dot-xtracharts-dot-axis2d-d128fd61.md
Gets the axis collection of constant lines.
Namespace : DevExpress.XtraCharts
Assembly : DevExpress.XtraCharts.v25.2.dll
NuGet Package : DevExpress.Charts
[PersistenceMode(PersistenceMode.InnerProperty)]
[XtraChartsLocalizableCategory(XtraChartsCategory.Elements)]
public ConstantLineCollection ConstantLines { get; }
<XtraChartsLocalizableCategory(XtraChartsCategory.Elements)>
<PersistenceMode(PersistenceMode.InnerProperty)>
Public ReadOnly Property ConstantLines As ConstantLineCollection
| Type | Description |
|---|---|
| ConstantLineCollection |
A ConstantLineCollection object which represents the collection of constant lines.
|
For more information, refer to Constant Lines.
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;
' Cast the chart's diagram to the XYDiagram type, to access its axes.
Dim diagram As XYDiagram = CType(chartControl1.Diagram, XYDiagram)
' Create a constant line.
Dim constantLine1 As 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
See Also