CODEWITHSUNDEEP
c#asynchronoustimerwin-universal-appuwp
FetFrumos
FetFrumos

Reputation: 5964

UWP - app in background state and async method

I created app for universal windows platform(for Windows 10 desktop). I use DispatcherTimer in app. Timer run async method. When app in foreground it is work. But app is background(I minimize a window) async method not work. How can I solve this problem?

Upvotes: 0

Views: 610

Answers (2)

Grace Feng
Grace Feng

Reputation: 16652

When your app is not running in the foreground and tasks need to be executed, it is well known that we need to implement the background tasks for the app.

But, background tasks in UWP are lightweight. Due to memory constraints, battery life issue, I'm not sure what you need can be done in background task of UWP.

That doesn't mean you can't use DispatcherTimer in the background task, but background tasks are limited to 30 seconds of wall-clock usage, and it can be terminated by system for example when it throw the out-of-memory exception. So, if you want to execute your task every one minute, then it will not work.

The TimerTrigger which is mentioned by @ibebbs has a minimal time intervals which is 15 minutes, so I'm also not sure this can be used in your scenario.

Problem is what you need to do in the background task and how often, you can leave a comment to tell that, so can we continue to discuss on this issue.

Upvotes: 2

ibebbs
ibebbs

Reputation: 1993

You should Create and register a background task that runs in a separate process and use a TimerTrigger to invoke it at the desired interval.

Upvotes: 1

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