wpf-devexpress-dot-xpf-dot-grid-dot-dataviewbase-a501f830.md
Occurs after the Column Chooser has been shown.
Namespace : DevExpress.Xpf.Grid
Assembly : DevExpress.Xpf.Grid.v25.2.Core.dll
NuGet Package : DevExpress.Wpf.Grid.Core
public event RoutedEventHandler ShownColumnChooser
Public Event ShownColumnChooser As RoutedEventHandler
The ShownColumnChooser 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. |
To show the Column Chooser, use the DataViewBase.ShowColumnChooser method. After the Column Chooser has been shown, the ShownColumnChooser event is raised.
To hide the Column Chooser, call the DataViewBase.HideColumnChooser method. After the Column Chooser has been hidden, the DataViewBase.HiddenColumnChooser event is raised.
To determine whether the Column Chooser is displayed within a View, use the DataViewBase.IsColumnChooserVisible property.
See Also