XYDiagram2D.BeforeScroll Event
Occurs before the diagram is scrolled.
Namespace: DevExpress.Xpf.Charts
Assembly: DevExpress.Xpf.Charts.v19.1.dll
Declaration
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. |
The event data class exposes the following methods:
| Method | Description |
|---|---|
| InvokeEventHandler(Delegate, Object) | When overridden in a derived class, provides a way to invoke event handlers in a type-specific way, which can increase efficiency over the base implementation. Inherited from RoutedEventArgs. |
| OnSetSource(Object) | When overridden in a derived class, provides a notification callback entry point whenever the value of the Source property of an instance changes. Inherited from RoutedEventArgs. |
See Also