[C #] Stepping into the world of asynchronous programming-parsing asynchronous methods (bottom)

Stepping into the world of asynchronous programming-dissecting asynchronous Method (bottom) Order

Thank you for your support, this is a supplement to the world of asynchronous programming-anatomy Async Method (above), which was released yesterday.

Directory

• Exception handling
• Synchronizing the wait task in the calling method
• Asynchronously waits for a task in an async method
• Suspend operation with Task.delay ()

　　

First, exception handling

An await expression can also use the try...catch...finally structure.

1     Internal class Program2     {3         Private Static voidMain (string[] args)4         {5             vart =Doexceptionasync ();6 t.wait ();7 8Console.WriteLine ($"{nameof (t.status)}: {T.status}");//Task Status9Console.WriteLine ($"{nameof (t.iscompleted)}: {t.iscompleted}");//Task Completion status identificationTenConsole.WriteLine ($"{nameof (t.isfaulted)}: {t.isfaulted}");//whether the task has an unhandled exception ID One  A Console.read (); -         } -  the         /// <summary> -         ///Exception Action -         /// </summary> -         /// <returns></returns> +         Private Static AsyncTask Doexceptionasync () -         { +             Try A             { at                 awaitTask.run (() = {Throw NewException ();}); -             } -             Catch(Exception) -             { -Console.WriteLine ($"{nameof (Doexceptionasync)} An exception occurred! "); -             } in         } -}

Figure 1-1

The parse await expression is in the try block and handles the exception in a normal manner. However, why the status in the diagram, whether the completion identity and whether the failed identity are displayed separately: Rantocompletion, True, and False? Because: The task has not been canceled, and the exception has been processed to complete!

This is the preview version, to be released after re-finishing, thank you

[C #] Stepping into the world of asynchronous programming-parsing asynchronous methods (bottom)