DXTabControl.TabShowing Event
Occurs before a tab item is shown.
Namespace: DevExpress.Xpf.Core
Assembly: DevExpress.Xpf.Core.v14.2.dll
#Declaration
#Event Data
The TabShowing event's handler receives an argument of the TabControlTabShowingEventArgs type. The following properties provide information specific to this event:
| Property | Description |
|---|---|
| Cancel | Gets or sets whether to cancel the action. |
| Tab |
Gets the index of the processed tab item.
Inherited from Tab |
#Remarks
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.
Handle the DXTabControl.SelectionChanging or DXTabControl.SelectionChanged event to cancel selecting a tab item or respond to this action respectively. For details, see Navigating Between Tab Items.