wpf-devexpress-dot-xpf-dot-propertygrid-dot-propertygridcontrol-770de869.md
Allows you to prohibit the focused editor to process an activation action.
Namespace : DevExpress.Xpf.PropertyGrid
Assembly : DevExpress.Xpf.PropertyGrid.v25.2.dll
NuGet Package : DevExpress.Wpf.PropertyGrid
public event EventHandler<ProcessEditorActivationActionEventArgs> ProcessEditorActivationAction
Public Event ProcessEditorActivationAction As EventHandler(Of ProcessEditorActivationActionEventArgs)
The ProcessEditorActivationAction event's data class is ProcessEditorActivationActionEventArgs. The following properties provide information specific to this event:
| Property | Description |
|---|---|
| ActivationAction | Gets an activation action. Inherited from ActivationActionEventArgsBase. |
| 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. |
| KeyDownEventArgs | Gets event arguments for the KeyDown and KeyUp activation actions. Inherited from ActivationActionEventArgsBase. |
| MouseLeftButtonEventArgs | Gets event arguments for the MouseLeftButtonDown and MouseLeftButtonUp activation actions. Inherited from ActivationActionEventArgsBase. |
| OriginalSource | Gets the original reporting source as determined by pure hit testing, before any possible Source adjustment by a parent class. Inherited from RoutedEventArgs. |
| RaiseEventAgain | Gets or sets whether the event is raised again to make the focused editor process an activation action. |
| RoutedEvent | Gets or sets the RoutedEvent associated with this RoutedEventArgs instance. Inherited from RoutedEventArgs. |
| Row | Gets a property grid row. Inherited from PropertyGridRowBaseEventArgs. |
| Source | Gets or sets a reference to the object that raised the event. Inherited from RoutedEventArgs. |
| TemplateChild | Gets an in-place editor specified in a cell template. Inherited from ActivationActionEventArgsBase. |
| TextInputEventArgs | Gets event arguments for the TextInput activation action. Inherited from ActivationActionEventArgsBase. |
| Value | Gets a row’s value. Inherited from PropertyGridRowBaseEventArgs. |
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. |
A user can activate the property definition’s in-place editor in the following ways:
Enter.F2.When a user activates an editor, the PropertyGridControl passes the activation action to the editor. To prohibit the editor to process the action, handle the ProcessEditorActivationAction event and set the RaiseEventAgain property to false.
The following code sample divides user actions: the first click activates the editor, and the second interacts with the editor:
void OnProcessEditorActivationAction(object sender, DevExpress.Xpf.PropertyGrid.ProcessEditorActivationActionEventArgs e) {
if (e.ActivationAction == ActivationAction.MouseLeftButtonDown)
e.RaiseEventAgain = false;
}
Private Sub OnProcessEditorActivationAction(ByVal sender As Object, ByVal e As DevExpress.Xpf.PropertyGrid.ProcessEditorActivationActionEventArgs)
If e.ActivationAction = ActivationAction.MouseLeftButtonDown Then e.RaiseEventAgain = False
End Sub
The PropertyGridControl includes the following events that allow you to specify how users can interact with editors:
| Event | Description |
|---|---|
| GetIsEditorActivationAction | Allows you to specify whether an action (key down, text input, or mouse left button click) activates the focused editor. |
ProcessEditorActivationAction | Allows you to prohibit the focused editor to process an activation action. |
| GetActiveEditorNeedsKey | Allows you to specify whether an active editor responds to keys that a user presses. |
See Also