Called before the MouseLeftButtonDown event occurs.
Assembly: System.Windows (in System.Windows.dll)
The method is called before any event handler for the MouseLeftButtonDown event is called. This method allows derived classes to handle the MouseLeftButtonDown event without attaching a delegate. This is the preferred technique for handling the event in a derived class.Notes to Inheritors
If you override , you can prevent registered delegates from receiving events by setting Handled to true. For more information about routed events and the Handled property, see Events Overview for Silverlight.
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.