How to use .NET 6-windows and .NET 6 targets in one library

Question

I've segregated my WinUI 3 application into different layers: Application, Infrastructure, Presentation etc.

And all the projects have targets: net6.0-windows and I want to move it to the Uno Platform.

So, I've added a new target: net6.0

And at this moment the problem arises: Type [WinUI] component already defines a member, called InitializeComponent or some problems with binding.

Is it possible to make such type of library with targets to net6-windows and net6.0?

Answer 1

For the Windows app project itself, you need to use net6-windows, as that provides additional dependencies specific to Windows app projects. All other libraries (non-app projects) can then use net6.0.

Regarding the specific error message, you are getting, the reason might be the generated files have some kind of conflict - you can try deleting the obj and bin folders and rebuild.

The easiest way to make existing Windows app support Uno would probably be to create a blank Uno solution and then migrate the code there (as the solution has already the required setup for platform-specific projects prepared and you can then just add your code.

Uno also provides templates for cross-targeted libraries, so you might be able to use similar approach. The one linked is for "UWP" solution however, so to make it WinUI, you would need to switch from uap10.0.18362 to net6-windows.