c# - ActionNameAsync-ActionNameCompleted vs async-await in Asp.NET MVC -


i'm starting async mvc , know wich main difference between 2 implementations of asynccontroller.

the first 1 using viewnameasync , viewnamecompleted implementation:

public class homecontroller : asynccontroller {     // ... manager declaration ...      public void indexasync()     {         asyncmanager.outstandingoperations.increment();          manager.expensiveoperationcompleted += () =>         {             debug.writeline("expensive operation completed.");             asyncmanager.outstandingoperations.decrement();         };          manager.expensiveoperationasync();     }      public actionresult indexcompleted()     {         return view();     } }

and second 1 using async-await implementation:

public class homecontroller : controller {     // ... manager declaration ...      public async task<actionresult> index()     {         await manager.expensiveoperation();          return view();     } }

the "main difference" async/completed approach using outdated , less maintainable way asynchronous request handling.


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