XYDiagram2D.BeforeZoom Event

Occurs before the diagram is zoomed.

Namespace: DevExpress.Xpf.Charts

Assembly: DevExpress.Xpf.Charts.v20.1.dll

Declaration

public event XYDiagram2DBeforeZoomEventHandler BeforeZoom
Public Event BeforeZoom As XYDiagram2DBeforeZoomEventHandler

Event Data

The BeforeZoom event's data class is XYDiagram2DBeforeZoomEventArgs. The following properties provide information specific to this event:

Property Description
Axis Returns the zoomed axis.
Cancel Gets or sets the value that specifies whether zooming is canceled.
Handled Gets or sets a value that indicates the present state of the event handling for a routed event as it travels the route. Inherited from RoutedEventArgs.
NewRange Returns information about the zoomed axis's new visual range.
OriginalSource Gets the original reporting source as determined by pure hit testing, before any possible Source adjustment by a parent class. Inherited from RoutedEventArgs.
RoutedEvent Gets or sets the RoutedEvent associated with this RoutedEventArgs instance. Inherited from RoutedEventArgs.
Source Gets or sets a reference to the object that raised the event. Inherited from RoutedEventArgs.

Remarks

To cancel a zoom operation, handle the XYDiagram2D.BeforeZoom event and use the e.Cancel property.

private void XYDiagram2D_BeforeZoom(object sender, XYDiagram2DBeforeZoomEventArgs e) {
    if (e.Axis is AxisX2D) {
        e.Cancel = true;
    }
}
See Also