Listbox bound to an ObservableCollection doesn't update

Question

I am using a ObservableCollection to store the Environment Variables of Windows.

class VariableVieWModel
{
    ObservableCollection vars         


        

Answer 1

You haven't modified the ObservableCollection, only replaced it. You should implement INotifyPropertyChanged and call PropertyChanged in the Variables property setter.

BTW it's common in MVVM implementations to have a base class for your ViewModel:

class VariableViewModel : ViewModelBase

and implement common functionality such as INotifyPropertyChanged in the base class to avoid duplication of code.