Events and Event Handlers

An event handler is a script that executes when a certain event occurs. For example, an event occurs when the user presses the mouse button while the cursor is over a control.

Some event handlers require event-specific information. For example, the OnMouseMove control event may need to know the position of the mouse. DataHub WebView uses the general events infrastructure for Microsoft Silverlight, but uses a different event handler mechanism. For most events, rather than requiring event handlers to expect function arguments, DataHub WebView exposes intrinsic objects.

Event Type	Event Arguments
Element Events	Accessed via intrinsic objects: Element, ElementData, Me, EventName and EventArgs.
Page Events	Accessed via intrinsic objects: Page and EventName.
Application Events	Passed as function arguments. Application event handlers are coded as complete script functions (typically in a .ss file). The Application_UserChanged event handler must be coded to expect the name of the user as a function argument. Intrinsic objects are not available.