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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.

Namespace:  System.Web.UI.DataVisualization.Charting
Assembly:  System.Web.DataVisualization (in System.Web.DataVisualization.dll)

public:
HitTestResult^ HitTest(
	int x, 
	int y, 
	ChartElementType requestedElement
)

Parameters

x
Type: System::Int32
The X-coordinate value of the point the user clicked on.
y
Type: System::Int32
The Y-coordinate value of the point the user clicked on.
requestedElement
Type: System.Web.UI.DataVisualization.Charting::ChartElementType
A flag that determines the chart element type to be tested.

Return Value

Type: 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.

Important noteImportant

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.

.NET Framework

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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