AndroidX and FragmentManager

Question

I am updating an older App to use AndroidX and moving it to VS2022. In my code, I have the following code:

AndroidX.Fragment.App.FragmentTransaction ft = FragmentManager.BeginTransaction();
ft.Replace(Resource.Id.contentFrame, new MainScreenFragment());
ft.Commit();

I get the message that this is now obsolete. What is the proper way to do this now? Is there a tutorial that explains the differences?

Thanks, Dan

Furthermore, the second line generates the error:

Error   CS0229  Ambiguity between 'Resource.Id.contentFrame' and 'Resource.Id.contentFrame'

Any suggestions on how to fix this error?