c# - cannot await object in the async call -

i have method called dosomething() returns object , time-consuming. use async/await let run in background while gui showing "waiting response..." message.

in calling method:

task taskdosomething = new task(dosomethingasync); taskdosomething.start(); taskdosomething.wait(); // continue program 

my dosomethingasync method:

private async void dosomethingasync() {     object result = await dosomething(); } 

but getting error:

cannot await [objecttype]

and [objecttype] type of object have created myself. used object above not confuse reader.

please let me know doing wrong , set me free of scattered processing of backgroundworker.

i think you've misunderstood how async , await works. if dosomething() long-running method isn't designed asynchrony, want in different thread, e.g. starting separate task:

task<object> task = task.run<object>(dosomething); 

note means dosomething won't able interact ui, it'll on different thread.

you can await task, if want - async method. it's hard give more concrete advice without knowing more context.

from comments, might have like:

private async void handlebuttonclick(object sender, eventargs e) {     task<object> task = task.run<object>(dosomething);     object result = await task;     status.text = "i've done something";     // use result? }