Closing material design dialog

Question

I have material design dialog:

<materialDesign:DialogHost CloseOnClickAway="True" IsOpen="{Binding IsOpenDialogAddingEP, UpdateSourceTrigger=PropertyChanged}">
...
</materialDesign:DialogHost>
<Button Command="{Binding CloseDialogAddingEPCommand}"/>

And I want to close the dialog on clicking the button, In code behinde:

public ICommand CloseDialogAddingEPCommand { get; private set; }
public MyPage()
{
    InitializeComponent();
    DataContext = this;
    CloseDialogAddingEPCommand = new RelayCommand(CloseDialogAddingEP);
}
void CloseDialogAddingEP()
{
     IsOpenDialogAddingEP = false;
}
private bool isOpenDialogAddingEP;
public bool IsOpenDialogAddingEP
{
   get { return isOpenDialogAddingEP; }
   set
   {
        isOpenDialogAddingEP = value;
        OnPropertyChanged("IsOpenDialogAddingEP");
    }
}
public event PropertyChangedEventHandler PropertyChanged;
protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
{
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}

but the button doesn't do nothing, can you tell why?

Answer 1

Have you added:

public partial class Window:Window, INotifyPropertyChanged

?