Errors when running .net generate assets to build .vscode folder

[guardrex]

Issue Description

For a hosted Blazor WebAssembly solution folder or Server project folder of the solution:

• Extension isn't offering to automatically add build and debug assets.
• Can't add .vscode assets manually.

Other issues:

• Similar to Errors when running .net generate assets to build .vscode folder #3176 (but not with the same cause, there's no apparent denial of writing to a path).
• Possibly similar to CSharp: Report an issue #4493.

cc: @captainsafia

Cross-reference ASP.NET Core docs issue that I'm working that pertains to this process: dotnet/AspNetCore.Docs#22234

Steps to Reproduce

1. Create a hosted Blazor WebAssembly solution (dotnet new blazorwasm -ho).

2. Open the solution's folder (or the Server project folder). The extension doesn't offer to add the build and debug assets.

3. Attempt manual add of the assets with: View > Command Palette followed by .NET: Generate Assets for Build and Debug.

4. Notification appears:

   Could not locate .NET Core project. Assets were not generated.

The notification appears either trying to add the assets to the solution's folder or the Server project's folder.

Expected Behavior

.vscode folder with launch.json and tasks.json, possibly with a prompt to add for the Server project if the solution's folder is opened in VSC.

Actual Behavior

Error when attempting manual add:

Could not locate .NET Core project. Assets were not generated.

Logs

OmniSharp log

Starting OmniSharp server at 5/7/2021, 7:54:50 PM
Target: c:\Users\XXXXX\Desktop\BlazorWebAssemblySignalRApp\Server

OmniSharp server started.
Path: c:\Users\XXXXX.vscode\extensions\ms-dotnettools.csharp-1.23.11.omnisharp\1.37.8\OmniSharp.exe
PID: 6856

Loaded OmniSharp.Cake, Version=1.37.0.0, Culture=neutral, PublicKeyToken=null
dbug: OmniSharp.CompositionHostBuilder
Loaded OmniSharp.DotNetTest, Version=1.37.0.0, Culture=neutral, PublicKeyToken=null
dbug: OmniSharp.CompositionHostBuilder
Loaded OmniSharp.Host, Version=1.37.0.0, Culture=neutral, PublicKeyToken=null
dbug: OmniSharp.CompositionHostBuilder
Loaded OmniSharp.MSBuild, Version=1.37.0.0, Culture=neutral, PublicKeyToken=null
dbug: OmniSharp.CompositionHostBuilder
Loaded OmniSharp.Roslyn, Version=1.37.0.0, Culture=neutral, PublicKeyToken=null
dbug: OmniSharp.CompositionHostBuilder
Loaded OmniSharp.Roslyn.CSharp, Version=1.37.0.0, Culture=neutral, PublicKeyToken=null
dbug: OmniSharp.CompositionHostBuilder
Loaded OmniSharp.Script, Version=1.37.0.0, Culture=neutral, PublicKeyToken=null
dbug: OmniSharp.CompositionHostBuilder
Loaded OmniSharp.Shared, Version=1.37.0.0, Culture=neutral, PublicKeyToken=null
info: OmniSharp.Stdio.Host
Starting OmniSharp on Windows 6.2.9200.0 (x64)
info: OmniSharp.Services.DotNetCliService
DotNetPath set to dotnet
dbug: OmniSharp.CompositionHostBuilder
.NET SDK requires MSBuild instances version 16.3 or higher
info: OmniSharp.MSBuild.Discovery.MSBuildLocator
Located 2 MSBuild instance(s)
1: Visual Studio Enterprise 2019 16.9.31205.134 - "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin"
2: StandAlone 16.9.0 - "c:\Users\XXXXX.vscode\extensions\ms-dotnettools.csharp-1.23.11.omnisharp\1.37.8.msbuild\Current\Bin"
dbug: OmniSharp.CompositionHostBuilder
MSBuild instance Visual Studio Enterprise 2019 16.9.31205.134 scored at 2
dbug: OmniSharp.CompositionHostBuilder
MSBuild instance StandAlone 16.9.0 scored at 1
dbug: OmniSharp.MSBuild.Discovery.MSBuildLocator
SUCCESS: Resolved to 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\Microsoft.Build.Utilities.Core.dll' (name-only).
dbug: OmniSharp.MSBuild.Discovery.MSBuildLocator
SUCCESS: Resolved to 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\Microsoft.Build.Tasks.Core.dll' (name-only).
dbug: OmniSharp.MSBuild.Discovery.MSBuildLocator
SUCCESS: Resolved to 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\Microsoft.Build.dll' (name-only).
dbug: OmniSharp.MSBuild.Discovery.MSBuildLocator
SUCCESS: Resolved to 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\Microsoft.Build.Framework.dll' (name-only).
info: OmniSharp.MSBuild.Discovery.MSBuildLocator
Registered MSBuild instance: Visual Studio Enterprise 2019 16.9.31205.134 - "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin"
dbug: OmniSharp.MSBuild.Discovery.MSBuildLocator
Attempting to resolve 'Microsoft.Build.Utilities.Core, Version=15.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
dbug: OmniSharp.MSBuild.Discovery.MSBuildLocator
SUCCESS: Resolved to 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\Microsoft.Build.Utilities.Core.dll' (name-only).
dbug: OmniSharp.MSBuild.Discovery.MSBuildLocator
Attempting to resolve 'Microsoft.Build.Framework, Version=15.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
dbug: OmniSharp.MSBuild.Discovery.MSBuildLocator
SUCCESS: Resolved to 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\Microsoft.Build.Framework.dll' (name-only).
dbug: OmniSharp.MSBuild.Discovery.MSBuildLocator
Attempting to resolve 'Microsoft.Build, Version=15.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
dbug: OmniSharp.MSBuild.Discovery.MSBuildLocator
SUCCESS: Resolved to 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\Microsoft.Build.dll' (name-only).
dbug: OmniSharp.MSBuild.Discovery.MSBuildLocator
Attempting to resolve 'Microsoft.CodeAnalysis.VisualBasic.Workspaces, Version=3.10.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'
dbug: OmniSharp.MSBuild.Discovery.MSBuildLocator
FAILURE: Could not locate 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\Microsoft.CodeAnalysis.VisualBasic.Workspaces.dll'.
dbug: OmniSharp.MSBuild.Discovery.MSBuildLocator
Attempting to resolve 'Microsoft.CodeAnalysis.VisualBasic.Features, Version=3.10.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'
dbug: OmniSharp.MSBuild.Discovery.MSBuildLocator
FAILURE: Could not locate 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\Microsoft.CodeAnalysis.VisualBasic.Features.dll'.
dbug: OmniSharp.WorkspaceInitializer
Starting with OmniSharp options: {"RoslynExtensionsOptions":{"EnableDecompilationSupport":false,"EnableAnalyzersSupport":false,"EnableImportCompletion":false,"DocumentAnalysisTimeoutMs":10000,"LocationPaths":null},"FormattingOptions":{"OrganizeImports":false,"EnableEditorConfigSupport":true,"NewLine":"\n","UseTabs":false,"TabSize":4,"IndentationSize":4,"SpacingAfterMethodDeclarationName":false,"SpaceWithinMethodDeclarationParenthesis":false,"SpaceBetweenEmptyMethodDeclarationParentheses":false,"SpaceAfterMethodCallName":false,"SpaceWithinMethodCallParentheses":false,"SpaceBetweenEmptyMethodCallParentheses":false,"SpaceAfterControlFlowStatementKeyword":true,"SpaceWithinExpressionParentheses":false,"SpaceWithinCastParentheses":false,"SpaceWithinOtherParentheses":false,"SpaceAfterCast":false,"SpacesIgnoreAroundVariableDeclaration":false,"SpaceBeforeOpenSquareBracket":false,"SpaceBetweenEmptySquareBrackets":false,"SpaceWithinSquareBrackets":false,"SpaceAfterColonInBaseTypeDeclaration":true,"SpaceAfterComma":true,"SpaceAfterDot":false,"SpaceAfterSemicolonsInForStatement":true,"SpaceBeforeColonInBaseTypeDeclaration":true,"SpaceBeforeComma":false,"SpaceBeforeDot":false,"SpaceBeforeSemicolonsInForStatement":false,"SpacingAroundBinaryOperator":"single","IndentBraces":false,"IndentBlock":true,"IndentSwitchSection":true,"IndentSwitchCaseSection":true,"IndentSwitchCaseSectionWhenBlock":true,"LabelPositioning":"oneLess","WrappingPreserveSingleLine":true,"WrappingKeepStatementsOnSingleLine":true,"NewLinesForBracesInTypes":true,"NewLinesForBracesInMethods":true,"NewLinesForBracesInProperties":true,"NewLinesForBracesInAccessors":true,"NewLinesForBracesInAnonymousMethods":true,"NewLinesForBracesInControlBlocks":true,"NewLinesForBracesInAnonymousTypes":true,"NewLinesForBracesInObjectCollectionArrayInitializers":true,"NewLinesForBracesInLambdaExpressionBody":true,"NewLineForElse":true,"NewLineForCatch":true,"NewLineForFinally":true,"NewLineForMembersInObjectInit":true,"NewLineForMembersInAnonymousTypes":true,"NewLineForClausesInQuery":true},"FileOptions":{"SystemExcludeSearchPatterns":["/node_modules//","/bin//","/obj//","/.git//","/.git","/.svn","/.hg","/CVS","**/.DS_Store"],"ExcludeSearchPatterns":[]},"RenameOptions":{"RenameOverloads":false,"RenameInStrings":false,"RenameInComments":false},"ImplementTypeOptions":{"InsertionBehavior":null,"PropertyGenerationBehavior":null},"Plugins":{"LocationPaths":null}}
info: OmniSharp.WorkspaceInitializer
Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.CSharpFormattingWorkspaceOptionsProvider, Order: 0
info: OmniSharp.WorkspaceInitializer
Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.Completion.CompletionOptionsProvider, Order: 0
info: OmniSharp.WorkspaceInitializer
Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.RenameWorkspaceOptionsProvider, Order: 100
info: OmniSharp.WorkspaceInitializer
Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.ImplementTypeWorkspaceOptionsProvider, Order: 110
info: OmniSharp.WorkspaceInitializer
Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.BlockStructureWorkspaceOptionsProvider, Order: 140
info: OmniSharp.Cake.CakeProjectSystem
Detecting Cake files in 'c:\Users\XXXXX\Desktop\BlazorWebAssemblySignalRApp\Server'.
info: OmniSharp.Cake.CakeProjectSystem
Could not find any Cake files
dbug: OmniSharp.MSBuild.Discovery.MSBuildLocator
Attempting to resolve 'Microsoft.Build'
dbug: OmniSharp.MSBuild.Discovery.MSBuildLocator
SUCCESS: Resolved to 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\Microsoft.Build.dll' (name-only).
dbug: OmniSharp.MSBuild.ProjectSystem
MSBuild environment:
Mode: VisualStudio
RunningTests: False
RunningInVisualStudio: False
MSBuildToolsDirectory32: C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin
MSBuildToolsDirectory64: C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\amd64
MSBuildSDKsPath: C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Sdks
CurrentMSBuildConfigurationFile: C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\MSBuild.exe.config
CurrentMSBuildExePath: C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\MSBuild.exe
CurrentMSBuildToolsDirectory: C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin
VisualStudioInstallRootDirectory: C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise
MSBuildExtensionsPath: C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild

Skip loading projects listed in solution file or under target directory because MsBuild:LoadProjectsOnDemand is true.
info: OmniSharp.Script.ScriptProjectSystem
Detecting CSX files in 'c:\Users\XXXXX\Desktop\BlazorWebAssemblySignalRApp\Server'.
info: OmniSharp.Script.ScriptProjectSystem
Could not find any CSX files
info: OmniSharp.WorkspaceInitializer
Configuration finished.
info: OmniSharp.Stdio.Host
Omnisharp server running using Stdio at location 'c:\Users\XXXXX\Desktop\BlazorWebAssemblySignalRApp\Server' on host 14288.
dbug: OmniSharp.Stdio.Host
************ Request ************
{
"Type": "request",
"Seq": 6,
"Command": "/projects"
}
dbug: OmniSharp.Stdio.Host
************ Request ************
{
"Type": "request",
"Seq": 5,
"Command": "/projects"
}
dbug: OmniSharp.Stdio.Host
************ Response ************
{
"Request_seq": 6,
"Command": "/projects",
"Running": true,
"Success": true,
"Message": null,
"Body": {
"MsBuild": {
"SolutionPath": null,
"Projects": []
},
"Script": {
"Projects": []
}
},
"Seq": 49,
"Type": "response"
}
dbug: OmniSharp.Stdio.Host
************ Response ************
{
"Request_seq": 5,
"Command": "/projects",
"Running": true,
"Success": true,
"Message": null,
"Body": {
"MsBuild": {
"SolutionPath": null,
"Projects": []
},
"Script": {
"Projects": []
}
},
"Seq": 50,
"Type": "response"
}
dbug: OmniSharp.Stdio.Host
************ Request ************
{
"Type": "request",
"Seq": 7,
"Command": "/projects"
}
dbug: OmniSharp.Stdio.Host
************ Response ************
{
"Request_seq": 7,
"Command": "/projects",
"Running": true,
"Success": true,
"Message": null,
"Body": {
"MsBuild": {
"SolutionPath": null,
"Projects": []
},
"Script": {
"Projects": []
}
},
"Seq": 54,
"Type": "response"
}
dbug: OmniSharp.Stdio.Host
************ Request ************
{
"Type": "request",
"Seq": 8,
"Command": "/projects"
}
dbug: OmniSharp.Stdio.Host
************ Response ************
{
"Request_seq": 8,
"Command": "/projects",
"Running": true,
"Success": true,
"Message": null,
"Body": {
"MsBuild": {
"SolutionPath": null,
"Projects": []
},
"Script": {
"Projects": []
}
},
"Seq": 57,
"Type": "response"
}

C# log

Post the output from Output-->C# here

Environment information

VSCode version: 1.56.0
C# Extension: 1.23.11

Dotnet Information

.NET SDK (reflecting any global.json): Version: 5.0.202 Commit: db7cc87d51

Runtime Environment:
OS Name: Windows
OS Version: 10.0.19041
OS Platform: Windows
RID: win10-x64
Base Path: C:\Program Files\dotnet\sdk\5.0.202\

Host (useful for support):
Version: 5.0.5
Commit: 2f740adc14

.NET SDKs installed:
3.1.302 [C:\Program Files\dotnet\sdk]
5.0.202 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
Microsoft.AspNetCore.All 2.1.27 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.2.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.App 2.1.27 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.2.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 3.1.14 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 5.0.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 2.1.27 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.2.8 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 3.1.14 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 5.0.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 3.1.14 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 5.0.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

To install additional .NET runtimes or SDKs:
https://aka.ms/dotnet-download

Visual Studio Code Extensions

Extension	Author	Version
code-spell-checker	streetsidesoftware	1.10.2
csharp	ms-dotnettools	1.23.11
DocFX	ms-docfx	0.1.3
docs-article-templates	docsmsft	0.2.11
docs-authoring-pack	docsmsft	0.1.13
docs-build	ceapex	0.1.24
docs-build	docsmsft	0.3.4
docs-images	docsmsft	0.0.9
docs-linting	docsmsft	0.0.7
docs-markdown	docsmsft	0.2.90
docs-metadata	docsmsft	1.0.6
docs-preview	docsmsft	0.3.57
docs-scaffolding	docsmsft	0.0.7
docs-yaml	docsmsft	0.2.6
js-debug-nightly	ms-vscode	2021.5.617
LinkCheckMD	blackmist	0.3.1
powershell	ms-vscode	2021.2.2
status-bar-tasks	GuardRex	0.3.0
vscode-markdownlint	DavidAnson	0.40.4
vscode-yaml	redhat	0.18.0

[guardrex]

UPDATE: We're going to cover it in docs by saying to the effect that if VSC doesn't create the .vscode folder assets automatically (i.e., launch.json and tasks.json) use the following default files and then show the files. We can go with that. I just don't want to have these files permanently present because they're going to churn over time and go stale.

I checked again this morning (6/1), and my VSC/Omnisharp still isn't creating these assets for a hosted Blazor WebAssembly app (opened either from the solution folder or from the Server project folder). Also, the Command Palette approach is failing to add them ... I still get ...

Could not locate .NET Core project. Assets were not generated.

I can drop the files into position into a manually-created .vscode folder in the solution's folder and then everything works fine.

[guardrex]

Hello ... I just want to provide an update (9/22/2021) that I'm still seeing this problem with ...

VSC: 1.60.1
C# Extension: 1.23.15

Could not locate .NET Core project. Assets were not generated.

... when in the command palette and I try to execute .NET: Generate Assets for Build and Debug for a Blazor hosted WebAssembly project generated using the .NET CLI with dotnet new blazorwasm -ho.