VS 2017 RC3 Solution Explorer file nesting not persisting

[srivatsn]

From @scottaddie on January 29, 2017 3:32

Here are the steps to reproduce in VS 2017 RC3 (15.0.26127.0 D15REL):

1. Clone the following repo: https://github.com/scottaddie/TagHelpersDemo. This is an ASP.NET Core MVC project targeting .NET Core.
2. Open the solution in VS, right-click the project in Solution Explorer, and choose Edit TagHelpersDemo.csproj from the context menu.
3. Remove the Compile node (provided below) from the project file's ItemGroup, and save the f

   <Compile Update="Views\Shared\Partials\CardViewModel.cs" DependentUpon="Views\Shared\Partials\_Card.cshtml" />

4. Add this Compile node back into the ItemGroup, and save the file. Notice that the CardViewModel.cs file is properly nested beneath _Card.cshtml in Solution Explorer.
5. Close the solution, and then reopen it in VS. Notice that the file nesting is no longer present in Solution Explorer.

Copied from original issue: dotnet/roslyn-project-system#1366

[srivatsn]

From @abpiskunov on January 30, 2017 17:29

@lifengl

[srivatsn]

The file nesting is implemented in the web tools extension. So moving to the web tools repo.

[abpiskunov]

this is either something new in CPS or again same issue with circular nestings , which CPS needs to handle. Circular nesting issue was moved to U1 in CPS. We need to create a separate bug and reference original github issue form core project system

[lifengl]

Missed this thread. DependentUpon should not contain a path, it should contains only the file name inside the same folder.

[lifengl]

Also, not sure whether using DependentUpon as an attribute works well at this point.

[scottaddie]

@lifengl Is there a more reliable way to use DependentUpon (e.g., as a child node of Compile)?

[lifengl]

The correct syntax is:

<Compile Update="Views\Shared\Partials\CardViewModel.cs" DependentUpon="_Card.cshtml" />

DependentUpon was interpreted in that folder, and relative/full path is not supported. Only a file name can be used here.

Some of our logic might remove the rest, and uses the only file name part (which is incorrect, you can change to randomFolder_card.cshtml but see the same behavior), but some are not . For the project you provide, the defined behavior is that CardViewModel.cs should not be nested under _Card.cshtml.

[scottaddie]

I can confirm that the file nesting works reliably after switching to the <Compile /> node provided above. I'm hoping that IntelliSense will eventually be provided, so that people know a full path isn't supported for DependentUpon.

[mlorbetske]

Glad to hear you got it working