.net - asyn example calling multiple method -

i learning async programming, not sure if going in right direction. want call multiple method async read asyn should start top level follow lowest level. @ top level when asyn method compiler complaining cannot wait string.

    public static async void method()     {         var classdemoasyn = new demoasyn();         var t = await classdemoasyn.dosomeimportantwork("start ").result;     }   public class demoasyn {     public async task<string> dosomeimportantwork(string strdosomework)     {         strdosomework = strdosomework + " (1) enter => important work";         console.writeline("**********enter => important work******");         var t = await somecomplexoperation(strdosomework);         console.writeline("***********end important work***********");         return t;     }      public task<string> somecomplexoperation(string strdosomecomplexwork)     {         string str =strdosomecomplexwork + "enter => very complex work";         console.writeline(str);         return task.factory.startnew(() => {return str; });     }  } 

the error you're getting because you're using both .result , await @ same time (as pointed out daniel kelley).

a common simple approach use async in console applications have top-level async task method , synchronously wait on in main() method (this pretty place wait() or result make sense in async-using code), e.g.:

void main() {     mainasync().wait(); } 

another option use stephen cleary's asynccontext.run().