Global.asax
1.Application_Start: This event occurs when the first user visits a page of the application. 2.Application_End: This event occurs when there are no more users of the application. 3.Application_BeginRequest: This occurs at the beginning of each request to the server. 4.Application_EndRequest: occurs at the end of each request to the server. 5.Session_Start: This event occurs every time when any new user visits. 6.Session_End: occurs when the users stop requesting pages and their session times out.