In Visual Studio, we can "Add as link" to add a link to a file in another project in the solution.
Is there any way to do this for entire folders, so that an entire folder in project A will be visible in project B, without the need to manually link to new items in that folder?
As this blogpost stated, it is possible.
<ItemGroup>
<Compile Include="any_abs_or_rel_path\**\*.*">
<Link>%(RecursiveDir)%(FileName)%(Extension)</Link>
</Compile>
</ItemGroup>
But be aware, the files will not be copied.