TabControl.SelectionChanged

[yanairon]

HI i"m trying to make a simple task when a tab is changing in a tab control, i want to check if a save should be done. and if so - ask the user if he wants to save or stay in the same tab (keep editing for example) i can't cancel the tab selection in the SelectionChanged event what can i do? Thanks, Yanai

[Lost User]

Yanai, Just handle the PreviewMouseLeftButtonDown event for the TabControl. Then check if the Source of the RoutedEvent is a TabItem. Perform your testing to see if you want to cancel the event and if so use, e.Handled = True to handle the event which will cancel the tab page switching.

Private Sub tcPages_PreviewMouseLeftButtonDown(ByVal sender As Object, _
ByVal e As System.Windows.Input.MouseButtonEventArgs) _
Handles tcPages.PreviewMouseLeftButtonDown

If TypeOf e.Source Is TabItem Then
    'perform your test here

    'if you want to keep editing then use this code
    e.Handled = True

End If

End Sub

Cheers, Karl » CodeProject 2008 MVP » Microsoft MVP - Client App Dev My Blog | Mole's Home Page | MVP Profile

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