c# - Handle exception when using Task.Run() in UI constructor -

i have constructor call task.run() this:

public mypage() {     task.run(() => {         myheavycpumethod();     }); } 

here, mypage() constructor of ui component, , don't want myheavycpumethod() run on ui thread, offload task.run() in fire-and-forget fashion since don't care when myheavycpumethod() finishes.

however, way if myheavycpumethod() throws, can't handle exception in returned task.

how can error handling in case?

one option use async/await... doesn't work constructor, can work in static method:

public static async task<mypage> createinstance() {     await task.run(...);     // else asynchronous want use     return new mypage(); } 

and assuming you're using async method, can use:

mypage page = await mypage.createinstance(); 

that way, if cpu-bound task fails, won't constructor call. constructor call expected fast here, will on ui thread (as want be).

an alternative this, potentially store task returned task.run field in page, , await post-construction... using normal async exception handling approaches.