what is the difference? I would like to implement Language dropdown selection in my app. So when a selected language is selected, a Thread culture would be set and page reloaded
It depends on the way you are saving your language across requests. If you are using a session to save your selected language in, you should use Application_AcquireRequestState
, because since Application_BeginRequest
is earlier in the life cycle, the session state object might not yet be available at this time.