WinUI project running Bg Tasks ApplicationTrigger

[danilobx]

Hi all!

I'm creating a solution with a simple WinUI project to trigger with an ApplicationTrigger, a Background Task in another WinRT project but without success. All the implementation was made using C# language.

Would it be possible to build a project as described? I managed to make it work using UWP.
Is there any example project similar to the one described?

Thanks!

[manodasanW]

I don't think we have a specific sample for this currently, but do you happen to have a specific issue you are running into or is it just the trigger doesn't run the background task?

[danilobx]

Hi Manodasan, thanks for your response!

Initially, I'm trying to build a WinUI project based on BgTaskComponent Sample. I uploaded my project into BgTaskTest.

First problem:
Severity Code Description Project File Line Suppression State Error APPX1101 Payload contains two or more files with the same destination path 'WinRT.Host.runtimeconfig.json'. Source files: C:\CSharp\repo\BgTaskTest\BgTaskTest\BgTaskComponent\WinRT.Host.runtimeconfig.json C:\CSharp\repo\BgTaskTest\BgTaskTest\BgTaskComponent\bin\x64\Debug\net6.0-windows10.0.19041.0\WinRT.Host.runtimeconfig.json WinUIBgTaskUi C:\Users\dls2\.nuget\packages\microsoft.windowsappsdk\1.2.221109.1\buildTransitive\Microsoft.Build.Msix.Packaging.targets 1504
I did a workaround renaming the file in the project BgTaskComponent root to WinRT.Host.runtimeconfig2.json. Now, the application is running.

Second problem:
The application registers the defined Background Task, but when triggered by the Lifecycle events, nothing is happening. In this scenario, a notification would be displayed, like the original sample.

I don't know what is happening because it is not showing any error message, log, or exception.

[hez2010]

I came into the same issue.
BackgroundTask generally works except when you want to use ApplicationTrigger, where the background task won't be triggered by an ApplicationTrigger at all.

[Osirisoo0O]

Any new progress？
I got “_COMPlusExceptionCode = -532462766” when register background task with ApplicationTrigger.