By default, series ToolTip displays only the Y values. This article describes the way to change this default setup for ToolTip and make it display both X and Y values.
The ToolTip in the SfChart can be customized by using the TooltipTemplate property. The custom template can be defined in the DataTemplate property. This template gets the ChartSegment in the template context and you can get X and Y values or even the complete datapoint object from this segment instance.
Note: A converter is used to get the X and Y values from the ChartSegment.
The following screenshot illustrates the output for the Chart with the ToolTip showing the X and Y values of the segments.das:
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