How To Raise Property Changed events on a Dependency Property?

Question

I have a control with two properties. One is a DependencyProperty, the other is an "alias" to the first one. How do I raise the PropertyChanged event for the second one (the alias) when the first one is changed.

NOTE: I'm using DependencyObjects, not INotifyPropertyChanged (tried that, didn't work because my control is a ListVie sub-classed)

Something like this.....

protected override void OnPropertyChanged(DependencyPropertyChangedEventArgs e) {     base.OnPropertyChanged(e);     if (e.Property == MyFirstProperty)     {         RaiseAnEvent( MySecondProperty ); /// what is the code that would go here?     }     } 

If I were using an INotify I could do like this...

public string SecondProperty {     get     {         return this.m_IconPath;     } }  public string IconPath {     get     {         return this.m_IconPath;     }     set     {         if (this.m_IconPath != value)         {             this.m_IconPath = value;         this.SendPropertyChanged("IconPath");         this.SendPropertyChanged("SecondProperty");         }     } } 

Where can I raise PropertyChanged events on multiple properties from one setter? I need to be able to do the same thing, only using DependencyProperties.

Answer 1

I ran into a similar problem where I have a dependency property that I wanted the class to listen to change events to grab related data from a service.

public static readonly DependencyProperty CustomerProperty =      DependencyProperty.Register("Customer", typeof(Customer),         typeof(CustomerDetailView),         new PropertyMetadata(OnCustomerChangedCallBack));  public Customer Customer {     get { return (Customer)GetValue(CustomerProperty); }     set { SetValue(CustomerProperty, value); } }  private static void OnCustomerChangedCallBack(         DependencyObject sender, DependencyPropertyChangedEventArgs e) {     CustomerDetailView c = sender as CustomerDetailView;     if (c != null) {         c.OnCustomerChanged();     } }  protected virtual void OnCustomerChanged() {     // Grab related data.     // Raises INotifyPropertyChanged.PropertyChanged     OnPropertyChanged("Customer"); }