Interface Binding Update

Question

The program has a button by pressing which the user can reset the values of all settings to the default value. Settings are stored in the SettingsVM object.

There are a lot of settings and in order not to reset each property individually, I simply create a new object.

 public class MainVM : BaseVM { public SearchVM SearchVM { get; set; } public static SettingsVM SettingsVM { get; set; } public MainVM() { SearchVM = new SearchVM(); SettingsVM = new SettingsVM(); ResetSettingsCommand = new RelayCommand(ResetSettings); } public ICommand ResetSettingsCommand { get; } private void ResetSettings() { SettingsVM = new SettingsVM(); OnPropertyChanged(String.Empty); } }

The problem is that after practicing the ResetSettings method ResetSettings interface does not change, but remains tied to the "old" object.

How to correct this behavior?

Accepted Answer · 2017-01-06T15:41:41

Your SettingsVM property, containing settings, is static. For him, the INotifyPropertyChanged interface INotifyPropertyChanged not work. Make the property non-static.

You will need to change the binding code in XAML, for non-static properties it is different (simpler).

All VMs are inherited from BaseVM , which implements INotifyPropertyChanged .

Interface Binding Update

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