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Thanks for using the Syncfusion products.
We have analysed the reported requirement. If you need the
exact underlying data point you can make use of FindNearestChartPoint method. Please
find the sample under the following location.
Code snippet [C#]:
chart1_PointerReleased(object sender, PointerRoutedEventArgs e)
SfChart SER = sender as SfChart;
Point pt = e.GetCurrentPoint(SER.Series).Position;
double x = 0, y = 0, z = 0;
SER.Series.FindNearestChartPoint(pt, out x, out y, out z);
var nearestData = x.FromOADate();
Please let us know if you require further assistance on