Defines settings for a constant line title.
NuGet Package: DevExpress.Charts
public class ConstantLineTitle : Title, ITextPropertiesProvider, IHitTest, ISupportTextAntialiasing
Public Class ConstantLineTitle Inherits Title Implements ITextPropertiesProvider, IHitTest, ISupportTextAntialiasing
Related API Members
The following members return ConstantLineTitle objects:
The ConstantLineTitle class contains settings that define the functionality of constant line titles. In addition to the settings inherited from the base Title class, the ConstantLineTitle class implements the ConstantLineTitle.Alignment and ConstantLineTitle.ShowBelowLine properties that respectively allow you to specify the alignment of the constant line’s title relative to the corresponding axis and the title’s display position relative to its constant line.
An object of the ConstantLineTitle type can be accessed via the ConstantLine.Title property of a constant line.
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;