Re: How can to create a custom event in SilverLight

12-19-2007 12:18 AM |

For a simple notification you could do something like this:

public class ListBox : Control
{
     public event EventHandler SelectionChanged;

     ...

        void OnMouseLeftButtonUp(object sender, MouseEventArgs args)
        {
            ...
            if (selectedItem != newSelection)
            {
                ...
                if (SelectionChanged != null)
                {
                    SelectionChanged(this, null);
                }
            }
         }
}
 

If you wanted to get fancier you could define your own delegate type that passed the identity of the selected item in the callback event args:

delegate void SelectionChangedEventHandler(object sender, SelectionChangedEventArgs e);

class SelectionChangedEventArgs : EventArgs
{
   public int SelectedIndex { get; set; }
} 

Re: Re: How can to create a custom event in SilverLight

12-19-2007 1:13 AM |

 Thanks for you quickly reply.

Is the custom event in SilverLight similar with the custom event in pure .Net framework?