a) User SENDS a solicitation to the IIS

• IIS first CHECKS which ISAPI expansion can serve this solicitation. Contingent upon document augmentation the solicitation is handled.

b) An occasion of the ApplicationManager class is made, which is the APPLICATION Domain that the solicitation is handled in.

• As we as a whole know, the application space makes separation between two web applications facilitated on similar IIS. So on the off chance that there is an issue in one application space, it doesn't influence the other application area.

c) In the application space, an occasion of the HostingEnvironment class for example the 'HttpRuntime' object is made, which gives access to data about the application, for example, the name of the organizer where the application is put away.

d) Once the facilitating condition is made, the essential center ASP.NET items like 'HttpContext', 'HttpRequest' and 'HttpResponse' OBJECTS are made.

e) The application is begun by MAKING a case of the HttpApplication class. On the off chance that the application has a Global.asax document, ASP.NET rather makes an occasion of the Global.asax class that is gotten from the HttpApplication class.

• HttpApplication cases may be reused for numerous solicitations.

f) Once 'HttpApplication' is made, it begins preparing demands. It experiences following 4 stages:

• (M: HttpModule): Client solicitation handling begins. Before the ASP.NET motor proceeds to make the ASP.NET HttpModule radiate occasions which can be utilized to infuse modified rationale. There are 6 significant occasions that you can use before your page item is made:
  • BeginRequest
  • AuthenticateRequest
  • AuthorizeRequest
  • ResolveRequestCache
  • AcquireRequestState
  • PreRequestHandlerExecute.
• (H: 'HttpHandler'): Once the over 6 occasions are terminated, ASP.NET motor will summon ProcessRequest occasion in the event that you have executed HttpHandler in your task.
• (P: ASP.NET page): Once the HttpHandler rationale executes, the ASP.NET page item is made. While the ASP.NET page item is made, numerous occasions are terminated which can assist us with writing our custom rationale inside those page occasions.
• (M: HttpModule): Once the page article is executed and emptied from memory, HttpModule gives post page execution occasions which can be utilized to infuse custom post-handling rationale. There are 4 significant post-handling occasions PostRequestHandlerExecute, ReleaserequestState, UpdateRequestCache and EndRequest.