Occurs before a tab item is shown.
public event TabControlTabShowingEventHandler TabShowing
Public Event TabShowing As TabControlTabShowingEventHandler
The TabShowing event's data class is TabControlTabShowingEventArgs. The following properties provide information specific to this event:
|Cancel||Gets or sets a value indicating whether the event should be canceled. Inherited from CancelEventArgs.|
|Item||Gets the tab item that raised the event. Inherited from TabControlCommonCancelEventArgsBase.|
|TabIndex||Gets the index of the tab that raised the event. Inherited from TabControlCommonCancelEventArgsBase.|
Handle the TabShowing event to prevent showing a hidden tab item. To do this, set the event parameter's TabControlTabShowingEventArgs.Cancel property to true.
To obtain the index of the tab item that is being shown, use the event parameter's TabControlTabShownEventArgs.TabIndex property. Use the DXTabControl.GetTabItem method to obtain a tab item by its index.
After the tab item has been shown, the DXTabControl.TabShown event is fired.
To learn more, see Showing and Hiding Tab Items.