ButtonBase.Click Event
Occurs when a Button is clicked.
Namespace: System.Windows.Controls.Primitives
Assembly: System.Windows (in System.Windows.dll)
Instead of using MouseLeftButtonDown or MouseLeftButtonUp, you should use the Click event to detect a button click by the user. Because of the way that the ButtonBase class handles mouse events, MouseLeftButtonDown and MouseLeftButtonUp events do not occur when the click mode is a value other than Hover.
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.