Visual Studio error displaying .razor file

[JerryMcMillan]

I get an invalid operation exception in Visual Studio 2019 Preview, .NET Core 3 preview 4 when opening a .razor file. VS renders the text as white only and intellisense does not work.

When I check the error log:

System.InvalidOperationException: The file 'C:/Users/jerry/Desktop/vs/MetroLock/MetroLock/Pages/FetchData.razor' is not a descendent of the base path 'C:/Users/jerry/desktop/vs/MetroLock/MetroLock' ...

In the two paths, one of the "Desktop" is capitalized, the other is not. This is fixed by moving my project to a lower case only directory. I looked really quick at the file DefaultRazorProjectFileSystem.cs and one possible fix would be on line 53

if (!absolutePath.StartsWith(absoluteBasePath))

could be changed to:

if (!absolutePath.StartsWith(absoluteBasePath, StringComparison.OrdinalIgnoreCase))

I hope this helps,

Thanks!

[analogrelay]

I looked really quick at the file DefaultRazorProjectFileSystem.cs

Since this file is in aspnet/AspNetCore-Tooling, my feeling is this probably should be moved to that repo. Thoughts @NTaylorMullen @mkArtakMSFT ?

[NTaylorMullen]

This is definitely a tooling issue; however, we track issues here in AspNetCore 😄. That being said this is the first public report of this issue that we've had. We have another internal report of this issue tracking the work as well. I've marked the bug with the appropriate labels and will leave it to triage to decide when to tackle this.

[BrennanConroy]

I am getting this consistently when opening .razor files in Components.sln.

Version 16.2.0 Preview 4.0 [29018.194.d16.2stg]
VisualStudio.16.IntPreview/16.2.0-pre.4.0+29018.194.d16.2stg

SDK: 3.0.100-preview6-012264

[ajaybhargavb]

@BrennanConroy, can you also include the actual error message and stack trace?

[BrennanConroy]

Encountered an error during adding a Code Container: Some or all identity references could not be translated.

System.InvalidOperationException: The file 'C:/GitHub/aspnetcore/src/Components/test/testassets/BasicTestApp/EventPreventDefaultComponent.razor' is not a descendent of the base path 'C:/github/aspnetcore/src/Components/test/testassets/BasicTestApp'.
at Microsoft.AspNetCore.Razor.Language.DefaultRazorProjectFileSystem.GetItem(String path, String fileKind)at Microsoft.VisualStudio.Editor.Razor.DefaultImportDocumentManager.GetImportItems(VisualStudioDocumentTracker tracker)
at Microsoft.VisualStudio.Editor.Razor.DefaultImportDocumentManager.OnSubscribed(VisualStudioDocumentTracker tracker)
at Microsoft.VisualStudio.Editor.Razor.DefaultVisualStudioDocumentTracker.Subscribe()
at Microsoft.VisualStudio.Editor.Razor.DefaultRazorDocumentManager.OnTextViewOpened(ITextView textView, IEnumerable`1 subjectBuffers)
at Microsoft.VisualStudio.Editor.Razor.RazorTextViewConnectionListener.SubjectBuffersConnected(ITextView textView, ConnectionReason reason, IReadOnlyCollection`1 subjectBuffers)
at Microsoft.VisualStudio.Text.Editor.Implementation.ConnectionManager.NonWpfListener.SubjectBuffersConnected(IWpfTextView textView, ConnectionReason reason, Collection`1 subjectBuffers)
at Microsoft.VisualStudio.Text.Editor.Implementation.ConnectionManager.<>c__DisplayClass7_3.<.ctor>b__3()
at Microsoft.VisualStudio.Text.Utilities.GuardedOperations.CallExtensionPoint(Object errorSource, Action call)
--- End of stack trace from previous location where exception was thrown ---
at Microsoft.VisualStudio.Telemetry.WindowsErrorReporting.WatsonReport.GetClrWatsonExceptionInfo(Exception exceptionObject)

[NTaylorMullen]

System.InvalidOperationException: The file 'C:/GitHub/aspnetcore/src/Components/test/testassets/BasicTestApp/EventPreventDefaultComponent.razor' is not a descendent of the base path 'C:/github/aspnetcore/src/Components/test/testassets/BasicTestApp'.

Interesting, so your casing is busted (notice how first part starts with C:/GitHub and second starts with C:/github). How are you opening the solution so I can try and dial down on a more concrete repro?

[BrennanConroy]

From the command line (in the . .\activate.ps1 environment), cd to Components folder, then "./Components.sln"

[NTaylorMullen]

Ah, so if you do pwd do you see a lower case github at the start of your path?

[BrennanConroy]

Yeah

[ajaybhargavb]

Yeah

Wait pwd shows you github? When we spoke offline I thought you said your actual casing for the folder in disk was GitHub.

[BrennanConroy]

Yes, those are both true

[jekawo]

I have the same problem, Stack trace:

System.InvalidOperationException: 
The file 'C:/Users/jwo/source/repos/Workmodel/Workmodel/Workmodel.Client/Pages/sales.razor'
is not a descendent of the base path 
C:/Users/jwo/Source/Repos/Workmodel/Workmodel/Workmodel.Client'. at 
Microsoft.AspNetCore.Razor.Language.DefaultRazorProjectFileSystem.GetItem(String path, String fileKind)   at 
Microsoft.VisualStudio.Editor.Razor.DefaultImportDocumentManager.GetImportItems(VisualStudioDocumentTracker tracker)   at 
Microsoft.VisualStudio.Editor.Razor.DefaultImportDocumentManager.OnSubscribed(VisualStudioDocumentTracker tracker)   at 
Microsoft.VisualStudio.Editor.Razor.DefaultVisualStudioDocumentTracker.Subscribe()  at 
Microsoft.VisualStudio.Editor.Razor.DefaultRazorDocumentManager.OnTextViewOpened(ITextView textView, IEnumerable`1 subjectBuffers)   at Microsoft.VisualStudio.Editor.Razor.RazorTextViewConnectionListener.SubjectBuffersConnected(ITextView textView, ConnectionReason reason, IReadOnlyCollection`1 subjectBuffers)   at
Microsoft.VisualStudio.Text.Editor.Implementation.ConnectionManager.NonWpfListener.SubjectBuffersConnected(IWpfTextView textView, ConnectionReason reason, Collection`1 subjectBuffers)   at 
Microsoft.VisualStudio.Text.Editor.Implementation.ConnectionManager.<>c__DisplayClass7_3.<.ctor>b__3()   at 
Microsoft.VisualStudio.Text.Utilities.GuardedOperations.CallExtensionPoint(Object errorSource, Action call) 
--- End of stack trace from previous location where exception was thrown ---    
at Microsoft.VisualStudio.Telemetry.WindowsErrorReporting.WatsonReport.GetClrWatsonExceptionInfo(Exception exceptionObject)

I see the case difference on the source folder