SankeyDiagramControl.CustomizeLinkToolTip Event
Occurs before a tooltip is displayed for a link and allows you to format tooltip content.
Namespace: DevExpress.XtraCharts.Sankey
Assembly: DevExpress.XtraCharts.v21.2.UI.dll
Declaration
Event Data
The CustomizeLinkToolTip event's data class is CustomizeSankeyLinkToolTipEventArgs. The following properties provide information specific to this event:
| Property | Description |
|---|---|
| Content | Specifies the tooltip’s content. Inherited from CustomizeSankeyToolTipEventArgs. |
| Link | Returns the link whose tooltip is customized. |
| Title | Specifies the tooltip’s title. Inherited from CustomizeSankeyToolTipEventArgs. |
Remarks
Handle the CustomizeNodeToolTip event to customize tooltips for nodes.
Example
To format tooltip text for links, handle the CustomizeLinkToolTip event and specify the CustomizeSankeyToolTipEventArgs.Title and CustomizeSankeyToolTipEventArgs.Content properties.
private void Form1_Load(object sender, EventArgs e) {
sankeyDiagramControl1.ToolTipOptions.LinkToolTipEnabled = DevExpress.Utils.DefaultBoolean.True;
sankeyDiagramControl1.ToolTipController = new DevExpress.Utils.ToolTipController {
ToolTipType = DevExpress.Utils.ToolTipType.Flyout,
AllowHtmlText = true
};
sankeyDiagramControl1.CustomizeLinkToolTip += OnCustomizeLinkToolTip;
}
private void OnCustomizeLinkToolTip(object sender, CustomizeSankeyLinkToolTipEventArgs e) {
e.Title = $"{e.Link.SourceNode.Tag} → {e.Link.TargetNode.Tag}";
e.Content = $"{e.Link.TotalWeight}";
}
See Also
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