How to run Windows App SDK packaged C# app at startup?

[myfix16]

I want to run my packaged c# app to start at log-in. Under the guidance of this post, I configured Package.appxmanifest and added relevant code to my app. However, when users log in, the splash screen appears but then the application fails to launch.

The post mentions one thing:

If your app is enabled for startup activation, you should handle this case in your App class by overriding the OnActivated method.

However, WASDK app doesn't have an OnActivated method. I guess the problem lies here and wonder how to correctly configure my code to fix this issue.

Appreciate any help.

[myfix16]

Resolved here.