How to get list of possible strings when parameter is a string

Question

In order to programmatically include a file to a project I use the method provided in this answer https://stackoverflow.com/a/23537007/1317323

Now I need to go further

Answer 1

I was able to do it using another namespace from Microsoft.

The solution is based on this one

Instead of manipulating my solution with

 Microsoft.Build.Evaluation.Project

I use

Microsoft.VisualStudio.Shell.Interop

Now I manipulate

EnvDTE.Project

And I can use

_currentProject.ProjectItems.AddFromFile(path);

If I do it twice with a xaml and a xaml.cs file with the same name, there are automatically nested.