SelectionChanged called each time ItemsSource is define

Question

i look for this problem in forums but i don't get an understandable answer. I have a listView (lstInterrogateur), each time i click on an item, i load data in another listview. It works fine! I have a combbox above (cboMatiere), which filter data of the listview lstInterrogateur. When i select item in the combobox, the listview load filtered data. So i make my query and:

lstInterrogateur.ItemsSource = dt.DefaultView;

But this line call:

lstInterrogateur_SelectionChanged(object sender, SelectionChangedEventArgs e)

in this section of code, i get the selected index, but, no index is select ans an error is generated.

How can i prevent the execution of this event?

Thanks.

Answer 1

Finally, i solved my problem simply, i just added these 2 lines at the beginning of the procedure:

if (lstInterrogateur.SelectedItem == null)
                return;