Occurs before a grouping operation is started. This is a routed event.
NuGet Package: DevExpress.Wpf.Grid.Core
public event RoutedEventHandler StartGrouping
Public Event StartGrouping As RoutedEventHandler
The StartGrouping event's data class is RoutedEventArgs. The following properties provide information specific to this event:
|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:
|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.|
Each time the grid’s data is grouped or ungrouped by a column, the grid does the following:
- Fires the
- Performs data grouping.
- Fires the GridControl.EndGrouping event.
To learn more, see Grouping.