Binding to a WPF hosted control's DependencyProperty in WinForms

Question

I have a WinForms app with some elements that are hosted WPF user controls (using ElementHost).

I want to be able to bind my WinForm's control property ( Button.Enabled ) to a custom DependencyProperty of the hosted WPF user control ( SearchResults.IsAccountSelected ).

Is it possible to bind a System.Windows.Forms.Binding to a property managed by a DependencyProperty?

Also, since I know the System.Windows.Forms.Binding watches for INotifyPropertyChanged.PropertyChanged events - will a property backed by a DependencyProperty automatically fire these events or will I have to implement and manage the sending of PropertyChanged events manually?

Answer 1

DependencyObject doesn't implement INotifyPropertyChanged , so if you take this route you will have to implement the sending of PropertyChanged events manually.

Fortunately DependencyObject does have the OnPropertyChanged method, so implementing INotifyPropertyChanged in your DependencyObject -derived class is trivial, for example:

public class MyClass : HeaderedContentControl, INotifyPropertyChanged
{
  protected override void OnPropertyChanged(DependencyPropertyChangedEventArgs e)
  {
    var handler = PropertyChanged;
    if(handler!=null) handler(this, new PropertyChangedEventArgs(e.Property.Name));
    base.OnPropertyChanged(e);
  }
  public event PropertyChangedEventHandler PropertyChanged;
}

I'd like to echo jsmith's thought that binding directly to a UserControl property may not be the best route to take. In most cases MVVM is a better way to go. There are exceptions, of course.