WPF TabControl change TabItem with Command

Question

I have a WPF application and in the main window I have a TabControl. I would like the TabItems to fire a RelayCommand that I have in my ViewModel when they get selected (different commands for each TabItem). I don't want a TabItem to be selected for some conditions that are set in the commands CanExecute function. Is this possible?

Answer 1

I think the right way to go here is not 'ICommand' but just a ViewModel property which will twoway bind to the TabControl.SelectedIndex (or SelectedItem) then you can take the decision in the ViewModel. This is better than defining a lot of commands specific to each TabItem

<TabControl SelectedIndex="{Binding VMSelectedTabIndex, Mode=TwoWay}">
//OR
<TabControl SelectedItem="{Binding VMSelectedItem, Mode=TwoWay}">