Following are the application event handlers:
Application_Start: This event occurs when the first user visits a page of the application.
Application_End: This event occurs when there are no more users of the application.
Application_BeginRequest: This occurs at the beginning of each request to the server.
Application_EndRequest: occurs at the end of each request to the server.
Session_Start: This event occurs every time when any new user visits.
Session_End: occurs when the users stop requesting pages and their session times out.