ChartControl.BoundDataChanged Event
Occurs every time a chart control generates its series points from the underlying data source.
Namespace: DevExpress.Xpf.Charts
Assembly: DevExpress.Xpf.Charts.v23.2.dll
NuGet Package: DevExpress.Wpf.Charts
Declaration
Event Data
The BoundDataChanged event's data class is RoutedEventArgs. The following properties provide information specific to this event:
| Property | Description |
|---|---|
| Handled | Gets or sets a value that indicates the present state of the event handling for a routed event as it travels the route. |
| OriginalSource | Gets the original reporting source as determined by pure hit testing, before any possible Source adjustment by a parent class. |
| RoutedEvent | Gets or sets the RoutedEvent associated with this RoutedEventArgs instance. |
| Source | Gets or sets a reference to the object that raised the event. |
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. |
| 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. |
Remarks
You can handle this event to change the way in which chart data is plotted before the chart displays it. In particular, this event can be used to change any properties of series labels or a series view type, e.g. when series template data binding is used.
Note that not all properties can be changed in the BoundDataChanged event handler. For example, changing the following properties will have no effect.
- Series.ArgumentScaleType and Series.ValueScaleType;
- Series.ArgumentDataMember and Series.ValueDataMember;
- Series.Points.
Related GitHub Examples
The following code snippet (auto-collected from DevExpress Examples) contains a reference to the BoundDataChanged event.
Note
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