thank's for all xour help my listbox ist fine, but one more question. I have a EventSetter on my ListBoxItem
void ListBoxItem_MouseDoubleClick(object sender, RoutedEventArgs e)
Frame pageFrame = null;
pageFrame = helper.FindChild<
if (pageFrame != null)
var content = pageFrame.Content as Page;
var targetPage = content is Trichter1 ? new KontaktDetailAnsicht(myContact) as Page : new Trichter1() as Page;
But how do i get the ViewModel? I tried Contact myContact = e.OriginalSource as Contact, but myContact is null? How do i get Values of my doubleclicked ListboxItem as my ViewModel?