What would be the equivalent or closest match of Activated event of Window in Page in WPF?

Question

There is Activated event in a Window in WPF. What is the the closest match for Activated event for a page. I want to use an event that triggers every time a page is displayed.

Answer 1

How about using the IsVisibleChanged event.

In your window, either your base class definition that you use throughout your app, or just the one you are interested in. Add a call at the opening of it something like

public class MyBaseclassWindow : Window
{
   public MyBaseclassWindow()
   {
      IsVisibleChanged += MyBaseclassWindow_IsVisibleChanged;
   }

   private void MyBaseclassWindow_IsVisibleChanged(object sender, DependencyPropertyChangedEventArgs e)
   {
      // e.NewValue will be TRUE when the visibility is coming back on
      if ( !e.NewValue )
         return;

      // do whatever you want every time window becomes visible.
   }
}

If this is something you want done throughout your system, then you can just use THIS window as your base window by always using it as forms are created.

Answer 2

There is the Loaded event which occurs when the element ( Page ) is laid out, rendered, and ready for interaction.

The Frame class, which I guess is used to host your pages, also has a ContentRendered event that you can handle.