Error Handling Using the Default OnError Event Handler

•The Silverlight.js file provides a default event handler for the OnError handler parameter
•When you leave the onError parameter in a CreateObject call unspecified or null, the default handler function defined in Silverlight.js is invoked
The OnError handler is used for
•XAML parsing errors
• errors that occur during load
•run-time errors
•errors in synchronous method calls that are not handled in a try/catch block
•asynchronous error events that do not have an attached event listener.