ChartToolTipController.ToolTipOpening Event

Occurs when a tooltip is appearing.

Namespace: DevExpress.Xpf.Charts

Assembly: DevExpress.Xpf.Charts.v24.1.dll

NuGet Package: DevExpress.Wpf.Charts

Declaration

C#

public event ToolTipOpeningEventHandler ToolTipOpening

VB.NET

Public Event ToolTipOpening As ToolTipOpeningEventHandler

Event Data

The ToolTipOpening event's data class is ChartToolTipEventArgs. The following properties provide information specific to this event:

Property	Description
Cancel	Gets or sets a value indicating whether the event should be canceled. Inherited from CancelEventArgs.
ChartControl	Gets or sets a chart which represents data from different kinds of data sources.
Hint	Gets or sets the data representing the content of the tooltip’s hint.
Pattern	Gets or sets a string which represents the pattern specifying the text to be displayed within a tooltip.
Series	Gets or sets a series for which a tooltip appears on a diagram.
SeriesPoint	Gets or sets the series point for which a tooltip appears on a diagram.
ShowBeak	Gets or sets a value that specifies whether to show the beak of a chart tooltip or not.
ShowHint	Gets or sets whether to show series or a point hint in a tooltip.
Template	Specifies the template that defines the appearance of the tooltip on a chart.

Related GitHub Examples

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

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>