Chart.HitTest Method (Int32, Int32, ChartElementType)
Determines whether a chart element of a given type is located at a point defined by the given X and Y coordinates.
Assembly: System.Web.DataVisualization (in System.Web.DataVisualization.dll)
The X-coordinate value of the point the user clicked on.
The Y-coordinate value of the point the user clicked on.
A flag that determines the chart element type to be tested.
Return ValueType: System.Web.UI.DataVisualization.Charting.HitTestResult
A HitTestResult object that provides information about the chart element, if any, found at the specified location.
Call this method to determine if a chart element of the given type is located at a specified point.
In order for this method to work correctly, the IsMapEnabled property must be set to false.
This method can be used with the Click server-side event when you implement drilldown. However, it is highly recommended that you use client-side image maps for drilldown because of ease of use.
The properties of the returned HitTestResult object can then be used to determine which chart element was clicked; the HitTestResult object also provides an instance of the actual object selected, if any.
Available since 4.0