EventManager in silverlight app

Question

When trying to use the following

EventManager.RegisterClassHandler(typeof(TextBox),
TextBox.GotFocusEvent,
new RoutedEventHandler(TextBox_GotFocus));

I am getting an error on 2nd parameter: "'System.Windows.Controls.TextBox' does not contain a definition for 'GotFocusEvent'"

Any help how to resolve this?

I am in the process of adding "Select All" behaviour for all TextBox in my silverlight app and by having this at Application_Startup in App.xaml.cs I thought would do the trick.

Thanks in advance.

Answer 1

TextBox doesn't define the static member GotFocusEvent but UIElement does.

Try replacing TextBox with UIElement like so:

EventManager.RegisterClassHandler(typeof(TextBox),
UIElement.GotFocusEvent,
new RoutedEventHandler(TextBox_GotFocus));

Answer 2

I can't find an EventManager class in the Silverlight documentation?

I'm fairly sure that Silverlight does not support Class Handlers.

The closest you are going to get is to place a handler for GotFocus on some element that contains these TextBoxes and test the OriginalSource property to see if it is of type TextBox.