ChartControl.RuntimeHitTesting Property

Specifies whether or not hit-testing is enabled for a Chart control.

Namespace: DevExpress.XtraCharts

Assembly: DevExpress.XtraCharts.v18.2.UI.dll

Declaration

C#

public bool RuntimeHitTesting { get; set; }

VB.NET

Public Property RuntimeHitTesting As Boolean

Property Value

Type	Description
Boolean	true, if a chart provides hit information at runtime; otherwise, false.

Remarks

By default, the RuntimeHitTesting property is set to false, which means that hit-testing is disabled at runtime. This is done to accelerate chart rendering.

If you want to get information on clicks within the chart using the ChartControl.CalcHitInfo method, set the RuntimeHitTesting option to true.

Note

• If you handle the ChartControl.ObjectHotTracked event, it will be raised and information on hit-testing will be collected regardless of the current RuntimeHitTesting property value.
• When the RuntimeHitTesting property is enabled, the SeriesPoint object can be inaccessible when hovering over the LineSeriesView at runtime. To resolve this issue, make sure the line point markers are visible (set the LineSeriesView.MarkerVisibility property to true).
• If you need to enable the RuntimeHitTesting property at runtime, turn it on during a chart’s initialization. You can do this in the Form’s constructor after the components’ initialization or in the Form’s Load event handler.

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the RuntimeHitTesting property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

how-to-determine-which-series-point-is-located-under-the-test-point-e2717/CS/WindowsFormsApplication79/Form1.cs#L18

    chartControl1.CrosshairEnabled = DefaultBoolean.False;
    chartControl1.RuntimeHitTesting = true;
}

VB.NET

how-to-determine-which-series-point-is-located-under-the-test-point-e2717/VB/WindowsFormsApplication79/Form1.vb#L20

    chartControl1.CrosshairEnabled = DefaultBoolean.False
    chartControl1.RuntimeHitTesting = True
End Sub