Blazor Language Services causing Visual Studio to crash

[mrpmorris]

When I open a Blazor project VS hangs for a while and then disappears. The next time I open it I am informed Blazor Language Services extension caused the problem.

https://www.youtube.com/watch?v=qqbAc9Kbo3M

Let me know if you need anything additional (project / logs / remote access to laptop).

Update - Output from build process

Error rzc generate exited with code 1. WebApplication22.Client C:\Users\X.nuget\packages\microsoft.aspnetcore.blazor.build\0.5.1\targets\RazorCompilation.targets 184

1>------ Rebuild All started: Project: WebApplication22.Shared, Configuration: Debug Any CPU ------
1>WebApplication22.Shared -> C:\Users\X\source\repos\WebApplication22b\WebApplication22.Shared\bin\Debug\netstandard2.0\WebApplication22.Shared.dll
2>------ Rebuild All started: Project: WebApplication22.Client, Configuration: Debug Any CPU ------
2>One or more errors occurred. (Stack empty.)
2> at System.Threading.Tasks.TaskReplicator.Run[TState](ReplicatableUserAction1 action, ParallelOptions options, Boolean stopOnFirstFailure) 2> at System.Threading.Tasks.Parallel.ForWorker[TLocal](Int32 fromInclusive, Int32 toExclusive, ParallelOptions parallelOptions, Action1 body, Action2 bodyWithState, Func4 bodyWithLocal, Func1 localInit, Action1 localFinally)
2>--- End of stack trace from previous location where exception was thrown ---
2> at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
2> at System.Threading.Tasks.Parallel.ThrowSingleCancellationExceptionOrOtherException(ICollection exceptions, CancellationToken cancelToken, Exception otherException)
2> at System.Threading.Tasks.Parallel.ForWorker[TLocal](Int32 fromInclusive, Int32 toExclusive, ParallelOptions parallelOptions, Action1 body, Action2 bodyWithState, Func4 bodyWithLocal, Func1 localInit, Action1 localFinally) 2> at System.Threading.Tasks.Parallel.For(Int32 fromInclusive, Int32 toExclusive, ParallelOptions parallelOptions, Action1 body)
2> at Microsoft.AspNetCore.Razor.Tools.GenerateCommand.GenerateCode(RazorProjectEngine engine, SourceItem[] inputs)
2> at Microsoft.AspNetCore.Razor.Tools.GenerateCommand.ExecuteCore(RazorConfiguration configuration, String projectDirectory, String tagHelperManifest, List1 sources, List1 outputs, List`1 relativePaths)
2> at Microsoft.AspNetCore.Razor.Tools.GenerateCommand.ExecuteCoreAsync()
2> at Microsoft.AspNetCore.Razor.Tools.CommandBase.d__13.MoveNext()
2>C:\Users\X.nuget\packages\microsoft.aspnetcore.blazor.build\0.5.1\targets\RazorCompilation.targets(184,5): error : rzc generate exited with code 1.
2>Done building project "WebApplication22.Client.csproj" -- FAILED.
3>------ Rebuild All started: Project: WebApplication22.Server, Configuration: Debug Any CPU ------
3>WebApplication22.Server -> C:\Users\X\source\repos\WebApplication22b\WebApplication22.Server\bin\Debug\netcoreapp2.1\WebApplication22.Server.dll
========== Rebuild All: 2 succeeded, 1 failed, 0 skipped ==========

[Liander]

I just want to fill in to say that you can easily reproduce with cut&paste <input></input>

The input tag is a void/empty tag not accepting any children so the tag expected is <input/> but the error is not handled gracefully.

[rynowak]

I'll look into this

[rynowak]

@mrpmorris - does your problem match @Liander 's description? It would be great to get an example of the file that's open when it crashes.

[rynowak]

dotnet/blazor#1457 Fixed for 0.6