I'm stuck in this problem for 4 days and here's the problem:
at the initialization of the ViewModel,I've set the the collection that will be filled with data(let's give it a name of "CountryCodeList") that is binded to the ItemsSource Property of my SfMultiColumnDropDownControl and the "SelectedCountryCode" Property that is binded to the SelectedItem Property is given with an instance with a value on it. But unfortunately my SfMultiColumnDropDownControl can't reveal automatically the value of SelectedCountryCode even if in it's ViewModel it has a instance with a value
Note: I'm implementing NotifyPropertyChange and a binding in "Mode=TwoWay" and "UpdateSourceTrigger=PropertyChanged"
I hope you can help me on this thing. Thanks