HitTestResult.PointIndex Property

.NET Framework (current version)

Gets or sets the index of a data point, if any, returned by a hit test.

Namespace:   System.Windows.Forms.DataVisualization.Charting
Assembly:  System.Windows.Forms.DataVisualization (in System.Windows.Forms.DataVisualization.dll)

public int PointIndex { get; set; }

Property Value

Type: System.Int32

An integer value that represents the index of a data point returned by a hit test. The default value is negative one (-1).

If a data point is at the location that is checked by a hit test, the PointIndex property will return the zero-based index of that data point, otherwise it will return a negative one (-1).

All data points are stored in a DataPointCollection, which is exposed as the Points collection property of a Series object; the index of the DataPointCollection is zero-based.

Use the Series property to determine the series to which the data point belongs.

.NET Framework
Available since 4.0
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