WPF - MVVM - ComboBox SelectedItem

Question

I have ViewModel(implemented INotifyPropertyChanged) in the background and class Category which has only one property of type string

Answer 1

If Combobox is bound to object class of the View Model, while the SelectionBoxItem of the sender object (in the SelectionChanged in code behind) has not that type, it means it's still loading.

ComboBox combo = sender as ComboBox;
if (combo.SelectionBoxItem.GetType() == typeof(BindedClass))
{
            // Not loading
}