private void WeeklyGrid_Unloaded(object sender, RoutedEventArgs e)
{
// Clear the data context so we don't receive view model updates while we are not visible
ViewModel = null;
}
private void WeeklyGrid_Loaded(object sender, RoutedEventArgs e)
{
// Check if we have a proper data context set
MainViewModel model = DataContext as MainViewModel;
if (model != null)
{
ViewModel = model;
}
// Call Update() to set up view based on events
Update();
}