XYDiagram2D.BeforeScroll Event

Occurs before the diagram is scrolled.

Namespace: DevExpress.Xpf.Charts

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

Declaration

public event XYDiagram2DBeforeScrollEventHandler BeforeScroll
Public Event BeforeScroll As XYDiagram2DBeforeScrollEventHandler

Event Data

The BeforeScroll event's data class is XYDiagram2DBeforeScrollEventArgs. The following properties provide information specific to this event:

Property Description
Axis Returns the scrolled axis.
Cancel Gets or sets the value that specifies whether scrolling 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

You can handle the XYDiagram2D.BeforeScroll event to cancel a scroll operation. Set the e.Cancel property to true for this purpose.

private void XYDiagram2D_BeforeScroll(object sender, XYDiagram2DBeforeScrollEventArgs e) {
    if (e.Axis is AxisY2D) {
        e.Cancel = true;
    }
}
See Also