How to position tooltip relative to mouse pointer in WPF Charts

In WPF Chart, the tooltip  is used to show the y-value or the data point value of related ChartSegment, when the user moves the mouse pointer over any chart segment. Chart tooltip is enabled by setting the ShowTooltip property of ChartSeries to true.

The following steps explain how to position the tooltip based on the mouse pointer position:

Step 1: Create an instance of ChartTooltipBehavior class and add it to the SfChart Behaviors collection.

Step 2: By default, the Position property of ChartTooltipBehavior value is Auto, which positions the tooltip at the data point position. You can also change the Position property value to Pointer to show the tooltip on the mouse pointer position, as shown in the following code example.

 [XAML]

<chart:SfChart.Behaviors>
    <chart:ChartTooltipBehavior Position="Pointer"/>
</chart:SfChart.Behaviors>

SfChart chart = new SfChart();
…
ChartTooltipBehavior chartTooltipBehavior = new ChartTooltipBehavior();
chartTooltipBehavior.Position = TooltipPosition.Pointer;
chart.Behaviors.Add(chartTooltipBehavior);

See also

How to customize the tooltip in chart

How to display the tooltip when the mouse is in any region of the FastLineBitmapSeries in WPF Charts

How to set the duration for chart tooltip

Conclusion

I hope you enjoyed learning how to position a tooltip relative to the mouse pointer in the WPF Chart.

You can refer to our WPF Chart feature tour page to learn about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our WPF Chart Examples to understand how to create and manipulate data.

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