HttpApplication.Start event does not exist

问题

I looked for an answer to this for quite sometime now but didn't find any.

I will refer to Application start as a stage.

Most of the documentations out there talk about the Global.asax file and the Application_Start method which is invoked only once when the first request reaches the Application, even if this behaviour is similar to subscribing to an event it's technicaly not an event.

While lifecycle events such as BeginRequest, AuthenticateRequest and so on are accessible through the application instance as events, the Application.Start is not.

I can subscribe to BeginRequest event in an HttpModule.Init() method or Global.asax Init() method but not to the Application.Start stage like so:

Module

public class MyModule : IHttpModule
{
  public void Init(HttpApplication httpApplication)
  {
    httpApplication.BeginRequest += new EventHandler(ApplicationBeginRequest);
  }
}

Global

public class Global : HttpApplication
{
  public override void Init()
  {
    BeginRequest += new EventHandler(ApplicationBeginRequest);
  }
}

After jumping to the .NET source code i found that the HttpApplicationFactory class looks for a method named "Application_OnStart" or "Application_Start" in the Global.asax file and then invokes it using reflection => ReflectOnMethodInfoIfItLooksLikeEventHandler().

My question:

Since HttpApplication.Start is not an event and not accessible from the Application instance in other fashions, is Global.asax and the "Application_OnStart" or "Application_Start" methods the only hope to add code at this applicative level ?

来源：https://stackoverflow.com/questions/54650631/httpapplication-start-event-does-not-exist

标签

ASP.NET

webforms