ChartToolTipController Class

Provides options that define the tooltip appearance and behavior for a chart.

Assembly: DevExpress.Xpf.Charts.v20.2.dll

NuGet Packages: DevExpress.WindowsDesktop.Wpf.Charts, DevExpress.Wpf.Charts

Declaration

C#
VB.NET

[NonCategorized]
public class ChartToolTipController :
    ChartDependencyObject

<NonCategorized>
Public Class ChartToolTipController
    Inherits ChartDependencyObject

The following members return ChartToolTipController objects:

Remarks

Use the ChartControl.ToolTipController property to get access to the ChartToolTipController object.

Then, it becomes possible to customize the tooltip appearance on a chart (e.g., ChartToolTipController.ShowBeak, ChartToolTipController.ShowShadow) and define the tooltip behavior (e.g, ChartToolTipController.CloseOnClick, ChartToolTipController.OpenMode and ChartToolTipController.InitialDelay).

For more information on how to use a tooltip in your application, see the Tooltips topic.

Example

This example demonstrates how to show a tooltip when a user clicks a series point.

Set the ChartControl.ToolTipEnabled property to true to enable tooltips. Until you disable ChartControlBase.CrosshairEnabled, the Crosshair Cursor and tooltip are shown simultaneously.

To invoke a tooltip for a marker series, such as LineSeries2D, user should click or hover over a point marker. Set the LineSeries2D.MarkerVisible property to true to enable markers.

The Series.ToolTipPointPattern property defines the text shown in a tooltip for a point.

To customize the tooltip behavior, initialize the ChartControl.ToolTipController property with an ChartToolTipController object. Specify its ChartToolTipController.OpenMode, ChartToolTipController.ShowShadow, ChartToolTipController.InitialDelay, and ChartToolTipController.ContentMargin properties.

XAML

<dxc:ChartControl CrosshairEnabled="False" 
                  ToolTipEnabled="True">
    <dxc:ChartControl.ToolTipController>
        <dxc:ChartToolTipController OpenMode="OnClick" 
                                    ShowShadow="False" 
                                    InitialDelay="0:0:0.4" 
                                    ContentMargin="4"/>
    </dxc:ChartControl.ToolTipController>
    <dxc:XYDiagram2D>
        <dxc:LineSeries2D MarkerVisible="True"
                          ToolTipPointPattern="{}Argument: {A}&#x0a;Value: {V:f3}"/>
    </dxc:XYDiagram2D>                      
</dxc:ChartControl>

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the ChartToolTipController class.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

XAML

how-to-provide-a-custom-tooltip-for-a-series-point-e4083/CS/ToolTipPointTemplate/MainWindow.xaml#L10

<dxc:ChartControl.ToolTipController>
    <dxc:ChartToolTipController ToolTipOpening="ChartToolTipController_ToolTipOpening" />
</dxc:ChartControl.ToolTipController>