XYDiagram2D.Scroll Event
Occurs after an XYDiagram2D is scrolled.
Namespace: DevExpress.Xpf.Charts
Assembly: DevExpress.Xpf.Charts.v24.1.dll
NuGet Package: DevExpress.Wpf.Charts
Declaration
Event Data
The Scroll event's data class is XYDiagram2DScrollEventArgs. The following properties provide information specific to this event:
Property | Description |
---|---|
AxisX | Gets the X-axis, along which the scrolling has been performed. |
AxisY | Gets the Y-axis, along which the scrolling has been performed. |
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. |
NewAxisXRange | Obsolete. Gets the new value of the Axis.Range property for the X-axis. |
NewAxisYRange | Obsolete. Gets the new value of the Axis.Range property for the Y-axis. |
NewXRange | Gets the new value of the Axis2D.VisualRange property of the X-axis. |
NewYRange | Gets the new value of the Axis2D.VisualRange property of the Y-axis. |
OldAxisXRange | Obsolete. Gets the old value of the Axis.Range property for the X-axis. |
OldAxisYRange | Obsolete. Gets the old value of the Axis.Range property for the Y-axis. |
OldXRange | Gets the old value of the Axis2D.VisualRange property of the X-axis. |
OldYRange | Gets the old value of the Axis2D.VisualRange property of the Y-axis. |
OriginalSource | Gets the original reporting source as determined by pure hit testing, before any possible Source adjustment by a parent class. Inherited from RoutedEventArgs. |
Pane | Gets a pane along which scrolling has been performed. |
RoutedEvent | Gets or sets the RoutedEvent associated with this RoutedEventArgs instance. Inherited from RoutedEventArgs. |
ScrollOrientation | Gets the scrolling orientation, i.e. along which axis scrolling is performed. |
Source | Gets or sets a reference to the object that raised the event. Inherited from RoutedEventArgs. |
Type | Gets the scrolling type, which specifies scrolling characteristics. |
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. |
Remarks
You can use the XYDiagram2D.Scroll event to track range changes when a user scrolls the chart.
private void XYDiagram2D_Scroll(object sender, XYDiagram2DScrollEventArgs e) {
// Get new range limits.
object newXRangeMin = e.NewXRange.MinValue;
object newXRangeMax = e.NewXRange.MaxValue;
object newYRangeMin = e.NewYRange.MinValue;
object newYRangeMax = e.NewYRange.MaxValue;
// Add your custom logic here.
}
See Also