Global.asax file

The Global.asax file is an optional file that is located in the application's root directory.The Global.asax file is parsed and dynamically compiled by ASP.NET into a .NET Framework class the first time any resource or URL within its application namespace is activated or requested. This file exposes event handlers with application-wide or session-wide scope in the Global.asax file such as Application_Start, Application_End, Session_Start, Session_End, etc.. Also exposes objects with application-wide or session-wide scope in it.


Events in Global.asax

1. Application_Init


2. Application_Start


3. Session_Start


4. Application_BeginRequest


5. Application_EndRequest


6. Application_AuthenticateRequest


7. Application_Error


8. Session_End


9. Application_End

There can be only one Global.asax file per application and it should be located in the application's root directory only.