This cheatsheet is a diagram of the events that occur and the order that they occur from the moment an ASP.NET application receives a request to the moment it sends the resulting headers and the content to the browser.

More specifically, this diagram show the flow of events that occur when an HttpApplication gets a request, when it determines the appropriate IHttpHandler to handle the request, when a Page handles and processes the request, when the Page and controls are initialized, loaded, and rendered, to when the HttpApplication completes the request and sends the response to the browser.