CrosshairLineElement Class

Defines the appearance of the crosshair argument line and crosshair value line elements when custom drawing a crosshair cursor using the ChartControl.CustomDrawCrosshair event.

Namespace: DevExpress.Xpf.Charts

Assembly: DevExpress.Xpf.Charts.v20.1.dll

Declaration

[NonCategorized]
public class CrosshairLineElement
<NonCategorized>
Public Class CrosshairLineElement

Related API Members

The following members accept/return CrosshairLineElement objects:

Remarks

To get access to appearance properties of the CrosshairLineElement object, use the DevExpress.Xpf.Charts.CrosshairElement.LineElement property when dealing with crosshair value lines and the CustomDrawCrosshairEventArgs.CrosshairLineElement property for the crosshair argument line if the CrosshairOptions.SnapMode property is set to NearestArgument.

When the CrosshairOptions.SnapMode property is set to NearestValue, these properties will affect other crosshair line elements. For instance, the CustomDrawCrosshairEventArgs.CrosshairLineElement property will change the appearance of crosshair value lines.

For more information on crosshair cursors, see Tooltip and Crosshair Cursor.

Examples

This example shows how to provide a custom appearance for the crosshair cursor using the ChartControl.CustomDrawCrosshair event. This event is invoked when you click the Custom Draw Crosshair Cursor button on the form.

If you wish to display crosshair axis lines and labels on a chart before custom drawing the crosshair cursor, set the CrosshairOptions.ShowArgumentLabels, CrosshairOptions.ShowArgumentLine, CrosshairOptions.ShowValueLabels and CrosshairOptionsBase.ShowValueLine properties to true.

Note that the customization of the crosshair cursor is provided for the CrosshairOptions.SnapMode property set to NearestArgument.

<Window x:Class="CrosshairCustomDraw.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525" xmlns:dxc="http://schemas.devexpress.com/winfx/2008/xaml/charts">
    <Grid>
        <StackPanel>
            <dxc:ChartControl Height="269"  Name="chartControl1" CustomDrawCrosshair="chartControl1_CustomDrawCrosshair">
                <dxc:ChartControl.CrosshairOptions>
                    <dxc:CrosshairOptions ShowArgumentLabels="True" ShowArgumentLine="True" 
                        ShowValueLabels="True" ShowValueLine="True"/>
                </dxc:ChartControl.CrosshairOptions>
                <dxc:XYDiagram2D>
                <dxc:LineSeries2D DisplayName="Series1">
                    <dxc:SeriesPoint Argument="1" Value="50"/>
                    <dxc:SeriesPoint Argument="2" Value="44"/>
                    <dxc:SeriesPoint Argument="3" Value="55"/>
                    <dxc:SeriesPoint Argument="4" Value="77"/>
                </dxc:LineSeries2D>
                <dxc:LineSeries2D DisplayName="Series2">
                    <dxc:SeriesPoint Argument="1" Value="22"/>
                    <dxc:SeriesPoint Argument="2" Value="11"/>
                    <dxc:SeriesPoint Argument="3" Value="9"/>
                    <dxc:SeriesPoint Argument="4" Value="8"/>
                </dxc:LineSeries2D>
                </dxc:XYDiagram2D>
            </dxc:ChartControl>
            <Button Height="35" Content="Custom Draw Crosshair Cursor" Click="Button_Click"></Button>
        </StackPanel>
    </Grid>
</Window>

Inheritance

Object
CrosshairLineElement
See Also