The HandleException method calls ImplHandleException to handle any exception that passes through all the try blocks in the application code.  

ImplHandleException generates an OnException event, so that an event handler can take care of the exception. If the OnException event handler does not handle the exception, ImplHandleException checks whether the response message has not yet been sent. If not, it adds the exception error message to the response. 

E is the exception object for the exception that occurred. 

Handled returns true if the OnException event handler handled the exception or if ImplHandleException added the error message to the response object. If Handled returns false, the WebSnap application displays a dialog box that indicates an error occurred. 

HandleException 

OnException