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Simple test project produces many error messages #1291

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ramon-garcia opened this issue Sep 11, 2018 · 12 comments
Open

Simple test project produces many error messages #1291

ramon-garcia opened this issue Sep 11, 2018 · 12 comments

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@ramon-garcia
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ramon-garcia commented Sep 11, 2018 •
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After creating a simple test project

dotnet new mstest

And opening it with Visual Studio Code, many compilation errors are reported by Omnisharp, like

The type 'AssemblyCompanyAttribute' exists in both 'System.Runtime, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' and 'System.Runtime, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' [MyProgram.Test]

Predefined type 'System.Object' is not defined or imported [MyProgram.Test]

In order to isolate the problem from Visual Studio Code, I ran it with omnisharp.exe using different versions.

omnisharp.exe -stdio

and sending

{"seq": 1, "Command": "/codecheck" }

to see the result of the C# check.

The problem happens with Omnisharp >= 1.31 . Omnisharp 1.30 works correctly. In addtion, if one creates a omnisharp.json

{
"MSBuild": {
"UseLegacySdkResolver": true
}
}

the problem goes away as well

Output of dotnet --info (Spanish output translated to English, maybe some message is not exact)

SDK de .NET Core (reflecting any global.json):
Version: 2.1.401
Commit: 91b1c13032

Runtime environment:
OS Name: Windows
OS Version: 10.0.17134
OS Platform: Windows
RID: win10-x64
Base Path: C:\Program Files\dotnet\sdk\2.1.401\

Host (useful for support):
Version: 2.1.4
Commit: 85255dde3e

.NET Core SDKs installed:
2.1.401 [C:\Program Files\dotnet\sdk]

.NET Core runtimes installed:
Microsoft.NETCore.App 2.1.4 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]

To install additional .NET Core runtimes or SDKs:
https://aka.ms/dotnet-download
@DustinCampbell DustinCampbell mentioned this issue Sep 12, 2018
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@DustinCampbell
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This issue was moved to dotnet/vscode-csharp#2515

@DustinCampbell
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Sorry, I mistakenly moved your issue.

@DustinCampbell
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Could you provide your full OmniSharp Log output?

@ramon-garcia
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ramon-garcia commented Sep 12, 2018 •
edited
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Here is a transcript of creating a test project and showing error messages with omnisharp. I translated some of the Spanish messages to English (but there were too many of them, btw, is there any way of setting omnisharp/vscode to English messages, for instance, with environment variables?)

C:\testomni>dotnet new mstest

The template "Unit Test Project" was created correcty

Processing further actions...
Executing "dotnet restore" in C:\testomni\testomni.csproj...
  Restoring packages for C:\testomni\testomni.csproj...
  Generation of file MSBuild C:\testomni\obj\testomni.csproj.nuget.g.props.
  Generation of file MSBuild C:\testomni\obj\testomni.csproj.nuget.g.targets.
  Restoring performed in 676,59 ms for C:\testomni\testomni.csproj.

Restoring successful

C:\testomni>"c:\Users\ramon\.vscode\extensions\ms-vscode.csharp-1.16.0.omnisharp\1.32.4\OmniSharp.exe" -stdio

{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.Stdio.Host","Message":"Starting OmniSharp on Windows 6.2.9200.0 (x64)"},"Seq":1,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.Services.DotNetCliService","Message":"DotNetPath set to dotnet"},"Seq":2,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.MSBuild.Discovery.MSBuildLocator","Message":"Located 2 MSBuild instance(s)\r\n            1: Visual Studio 2017 Express para escritorio 15.4.27004.2009 - \"C:\\Program Files (x86)\\Microsoft Visual Studio\\2017\\WDExpress\\MSBuild\\15.0\\Bin\"\r\n            2: StandAlone 15.0 - \"C:\\Users\\ramon\\.vscode\\extensions\\ms-vscode.csharp-1.16.0\\.omnisharp\\1.32.4\\msbuild\\15.0\\Bin\""},"Seq":3,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.MSBuild.Discovery.MSBuildLocator","Message":"Registered MSBuild instance: Visual Studio 2017 Express para escritorio 15.4.27004.2009 - \"C:\\Program Files (x86)\\Microsoft Visual Studio\\2017\\WDExpress\\MSBuild\\15.0\\Bin\""},"Seq":4,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.Cake.CakeProjectSystem","Message":"Detecting Cake files in 'C:\\testomni'."},"Seq":5,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.Cake.CakeProjectSystem","Message":"Could not find any Cake files"},"Seq":6,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.Stdio.Host","Message":"Project system 'OmniSharp.DotNet.DotNetProjectSystem' is disabled in the configuration."},"Seq":7,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.MSBuild.ProjectSystem","Message":"No solution files found in 'C:\\testomni'"},"Seq":8,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.MSBuild.ProjectManager","Message":"Queue project update for 'C:\\testomni\\testomni.csproj'"},"Seq":9,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.Script.ScriptProjectSystem","Message":"Detecting CSX files in 'C:\\testomni'."},"Seq":10,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.Script.ScriptProjectSystem","Message":"Could not find any CSX files"},"Seq":11,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.Stdio.Host","Message":"Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.CSharpWorkspaceOptionsProvider"},"Seq":12,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.Stdio.Host","Message":"Configuration finished."},"Seq":13,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.Stdio.Host","Message":"Omnisharp server running using Stdio at location 'C:\\testomni' on host -1."},"Seq":14,"Type":"event"}
{"Event":"started","Body":null,"Seq":15,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.MSBuild.ProjectManager","Message":"Loading project: C:\\testomni\\testomni.csproj"},"Seq":16,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.MSBuild.ProjectManager","Message":"Successfully loaded project file 'C:\\testomni\\testomni.csproj'."},"Seq":17,"Type":"event"}
{"Event":"MsBuildProjectDiagnostics","Body":{"FileName":"C:\\testomni\\testomni.csproj","Warnings":[],"Errors":[]},"Seq":18,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.MSBuild.ProjectManager","Message":"Adding project 'C:\\testomni\\testomni.csproj'"},"Seq":19,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.MSBuild.ProjectManager","Message":"Update project: testomni"},"Seq":20,"Type":"event"}
{"Event":"ProjectAdded","Body":{"MsBuildProject":{"ProjectGuid":"00000000-0000-0000-0000-000000000000","Path":"C:\\testomni\\testomni.csproj","AssemblyName":"testomni","TargetPath":"C:\\testomni\\bin\\Debug\\netcoreapp2.1\\testomni.dll","TargetFramework":".NETCoreApp,Version=v2.1","SourceFiles":["C:\\testomni\\UnitTest1.cs","C:\\Temp\\.NETCoreApp,Version=v2.1.AssemblyAttributes.cs","C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.Program.cs","C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs"],"TargetFrameworks":[{"Name":".NETCoreApp","FriendlyName":".NETCoreApp","ShortName":"netcoreapp2.1"}],"OutputPath":"bin\\Debug\\netcoreapp2.1\\","IsExe":true,"IsUnityProject":false}},"Seq":21,"Type":"event"}
{"Event":"ProjectChanged","Body":{"MsBuildProject":{"ProjectGuid":"00000000-0000-0000-0000-000000000000","Path":"C:\\testomni\\testomni.csproj","AssemblyName":"testomni","TargetPath":"C:\\testomni\\bin\\Debug\\netcoreapp2.1\\testomni.dll","TargetFramework":".NETCoreApp,Version=v2.1","SourceFiles":["C:\\testomni\\UnitTest1.cs","C:\\Temp\\.NETCoreApp,Version=v2.1.AssemblyAttributes.cs","C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.Program.cs","C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs"],"TargetFrameworks":[{"Name":".NETCoreApp","FriendlyName":".NETCoreApp","ShortName":"netcoreapp2.1"}],"OutputPath":"bin\\Debug\\netcoreapp2.1\\","IsExe":true,"IsUnityProject":false}},"Seq":22,"Type":"event"}

{"seq": 1, "command": "/codecheck"}

{"Request_seq":1,"Command":"/codecheck","Running":true,"Success":true,"Message":null,"Body":{"QuickFixes":[{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\UnitTest1.cs","Line":5,"Column":6,"EndLine":5,"EndColumn":15,"Text":"The predefiend type 'System.Object' is neither defined nor imported","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0616","FileName":"C:\\testomni\\UnitTest1.cs","Line":5,"Column":6,"EndLine":5,"EndColumn":15,"Text":"'TestClassAttribute' is not an attribute class","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\UnitTest1.cs","Line":5,"Column":6,"EndLine":5,"EndColumn":15,"Text":"The predefined type 'System.Void' is neither defined nor imported","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\UnitTest1.cs","Line":6,"Column":18,"EndLine":6,"EndColumn":27,"Text":"The predefined type 'System.Object' is neither defined nor imported","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\UnitTest1.cs","Line":9,"Column":16,"EndLine":9,"EndColumn":20,"Text":"The predefiend type 'System.Void' is neither defined nor imported","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\UnitTest1.cs","Line":8,"Column":10,"EndLine":8,"EndColumn":20,"Text":"The predefined type 'System.Object' is neither defined nor imported","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0616","FileName":"C:\\testomni\\UnitTest1.cs","Line":8,"Column":10,"EndLine":8,"EndColumn":20,"Text":"'TestMethodAttribute' is not an attribute class","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\UnitTest1.cs","Line":8,"Column":10,"EndLine":8,"EndColumn":20,"Text":"The predefiend type 'System.Void' is neither defined nor imported","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS1729","FileName":"C:\\testomni\\UnitTest1.cs","Line":6,"Column":18,"EndLine":6,"EndColumn":27,"Text":"'object' does not contain a constructor that takes 0 arguments","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0433","FileName":"C:\\Temp\\.NETCoreApp,Version=v2.1.AssemblyAttributes.cs","Line":4,"Column":46,"EndLine":4,"EndColumn":70,"Text":"The type 'TargetFrameworkAttribute' exists in 'System.Runtime, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' and in 'System.Runtime, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\Temp\\.NETCoreApp,Version=v2.1.AssemblyAttributes.cs","Line":4,"Column":71,"EndLine":4,"EndColumn":97,"Text":"The predefiend type 'System.String' is neither defined nor imported","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0246","FileName":"C:\\Temp\\.NETCoreApp,Version=v2.1.AssemblyAttributes.cs","Line":4,"Column":99,"EndLine":4,"EndColumn":119,"Text":"The name of the type or namespace 'FrameworkDisplayName' was not found (¿missing an using directive or assembly reference?)","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\Temp\\.NETCoreApp,Version=v2.1.AssemblyAttributes.cs","Line":4,"Column":122,"EndLine":4,"EndColumn":124,"Text":"The prefedined type 'System.String' was not defined nor imported","Projects":["testomni"]},{"LogLevel":"Hidden","Id":"CS8019","FileName":"C:\\Temp\\.NETCoreApp,Version=v2.1.AssemblyAttributes.cs","Line":3,"Column":1,"EndLine":3,"EndColumn":25,"Text":"Unnecessary Using directive.","Projects":["testomni"]},{"LogLevel":"Hidden","Id":"CS8019","FileName":"C:\\Temp\\.NETCoreApp,Version=v2.1.AssemblyAttributes.cs","Line":2,"Column":1,"EndLine":2,"EndColumn":14,"Text":"Unnecesary Using directive.","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.Program.cs","Line":3,"Column":2,"EndLine":3,"EndColumn":11,"Text":"The predefined type 'System.Object' is neither defined nor imported","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0616","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.Program.cs","Line":3,"Column":38,"EndLine":3,"EndColumn":62,"Text":"'TestSDKAutoGeneratedCode' is not an attribute class","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.Program.cs","Line":3,"Column":2,"EndLine":3,"EndColumn":62,"Text":"The predefined type 'System.Void' is neither defined nor imported","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.Program.cs","Line":4,"Column":7,"EndLine":4,"EndColumn":27,"Text":"The predefined type 'System.Object' is neither defined nor imported","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.Program.cs","Line":4,"Column":46,"EndLine":4,"EndColumn":52,"Text":"The predefined type 'System.String' is neither defined nor imported","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.Program.cs","Line":4,"Column":36,"EndLine":4,"EndColumn":40,"Text":"The predefined type 'System.Void' is neither defined nor imported","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS1729","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.Program.cs","Line":4,"Column":7,"EndLine":4,"EndColumn":27,"Text":"'object' does not contain a constructor that takes 0 arguments","Projects":["testomni"]},{"LogLevel":"Hidden","Id":"CS8019","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.Program.cs","Line":2,"Column":1,"EndLine":2,"EndColumn":14,"Text":"Unnecessary Using directive.","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0433","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs","Line":14,"Column":30,"EndLine":14,"EndColumn":54,"Text":"The type 'AssemblyCompanyAttribute' exists in 'System.Runtime, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' and in 'System.Runtime, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0433","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs","Line":15,"Column":30,"EndLine":15,"EndColumn":60,"Text":"The type 'AssemblyConfigurationAttribute' exists in 'System.Runtime, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' and in 'System.Runtime, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0433","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs","Line":16,"Column":30,"EndLine":16,"EndColumn":58,"Text":"The type 'AssemblyFileVersionAttribute' exists in 'System.Runtime, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' and in 'System.Runtime, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0433","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs","Line":17,"Column":30,"EndLine":17,"EndColumn":67,"Text":"El tipo 'AssemblyInformationalVersionAttribute' existe en 'System.Runtime, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' y en 'System.Runtime, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0433","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs","Line":18,"Column":30,"EndLine":18,"EndColumn":54,"Text":"El tipo 'AssemblyProductAttribute' existe en 'System.Runtime, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' y en 'System.Runtime, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0433","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs","Line":19,"Column":30,"EndLine":19,"EndColumn":52,"Text":"El tipo 'AssemblyTitleAttribute' existe en 'System.Runtime, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' y en 'System.Runtime, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0433","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs","Line":20,"Column":30,"EndLine":20,"EndColumn":54,"Text":"El tipo 'AssemblyVersionAttribute' existe en 'System.Runtime, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' y en 'System.Runtime, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs","Line":14,"Column":55,"EndLine":14,"EndColumn":65,"Text":"El tipo predefinido 'System.String' no está definido ni importado","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs","Line":15,"Column":61,"EndLine":15,"EndColumn":68,"Text":"El tipo predefinido 'System.String' no está definido ni importado","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs","Line":16,"Column":59,"EndLine":16,"EndColumn":68,"Text":"El tipo predefinido 'System.String' no está definido ni importado","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs","Line":17,"Column":68,"EndLine":17,"EndColumn":75,"Text":"El tipo predefinido 'System.String' no está definido ni importado","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs","Line":18,"Column":55,"EndLine":18,"EndColumn":65,"Text":"El tipo predefinido 'System.String' no está definido ni importado","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs","Line":19,"Column":53,"EndLine":19,"EndColumn":63,"Text":"El tipo predefinido 'System.String' no está definido ni importado","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs","Line":20,"Column":55,"EndLine":20,"EndColumn":64,"Text":"El tipo predefinido 'System.String' no está definido ni importado","Projects":["testomni"]},{"LogLevel":"Hidden","Id":"CS8019","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs","Line":11,"Column":1,"EndLine":11,"EndColumn":14,"Text":"Directiva Using innecesaria.","Projects":["testomni"]},{"LogLevel":"Hidden","Id":"CS8019","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs","Line":12,"Column":1,"EndLine":12,"EndColumn":25,"Text":"Directiva Using innecesaria.","Projects":["testomni"]}]},"Seq":23,"Type":"response"}

@DustinCampbell
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I think I see the problem here. OmniSharp is initializing itself with the MSBuild from what appears to be a fairly old version of VS 2017 Express for Windows Desktop (15.4) on your machine. It is likely that the MSBuild there is not compatible with a .NET Core 2.1 project. You could try updating VS 2017 to the latest (15.8).

@ramon-garcia
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Thanks for the suggestion.

Updated VS 2017 Expess to 15.8.4, and still failing

C:\Users\ramon\.vscode\extensions\ms-vscode.csharp-1.16.1\.omnisharp\1.32.5\OmniSharp.exe -stdio
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.Stdio.Host","Message":"Starting OmniSharp on Windows 6.2.9200.0 (x64)"},"Seq":1,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.Services.DotNetCliService","Message":"DotNetPath set to dotnet"},"Seq":2,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.MSBuild.Discovery.MSBuildLocator","Message":"Located 2 MSBuild instance(s)\r\n            1: Visual Studio 2017 Express para escritorio 15.8.28010.2026 - \"C:\\Program Files (x86)\\Microsoft Visual Studio\\2017\\WDExpress\\MSBuild\\15.0\\Bin\"\r\n            2: StandAlone 15.0 - \"C:\\Users\\ramon\\.vscode\\extensions\\ms-vscode.csharp-1.16.1\\.omnisharp\\1.32.5\\msbuild\\15.0\\Bin\""},"Seq":3,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.MSBuild.Discovery.MSBuildLocator","Message":"Registered MSBuild instance: Visual Studio 2017 Express para escritorio 15.8.28010.2026 - \"C:\\Program Files (x86)\\Microsoft Visual Studio\\2017\\WDExpress\\MSBuild\\15.0\\Bin\""},"Seq":4,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.Cake.CakeProjectSystem","Message":"Detecting Cake files in 'C:\\testomni'."},"Seq":5,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.Cake.CakeProjectSystem","Message":"Could not find any Cake files"},"Seq":6,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.WorkspaceInitializer","Message":"Project system 'OmniSharp.DotNet.DotNetProjectSystem' is disabled in the configuration."},"Seq":7,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.MSBuild.ProjectSystem","Message":"No solution files found in 'C:\\testomni'"},"Seq":8,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.MSBuild.ProjectManager","Message":"Queue project update for 'C:\\testomni\\testomni.csproj'"},"Seq":9,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.Script.ScriptProjectSystem","Message":"Detecting CSX files in 'C:\\testomni'."},"Seq":10,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.Script.ScriptProjectSystem","Message":"Could not find any CSX files"},"Seq":11,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.WorkspaceInitializer","Message":"Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.CSharpWorkspaceOptionsProvider"},"Seq":12,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.WorkspaceInitializer","Message":"Configuration finished."},"Seq":13,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.Stdio.Host","Message":"Omnisharp server running using Stdio at location 'C:\\testomni' on host -1."},"Seq":14,"Type":"event"}
{"Event":"started","Body":null,"Seq":15,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.MSBuild.ProjectManager","Message":"Loading project: C:\\testomni\\testomni.csproj"},"Seq":16,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.MSBuild.ProjectManager","Message":"Successfully loaded project file 'C:\\testomni\\testomni.csproj'."},"Seq":17,"Type":"event"}
{"Event":"MsBuildProjectDiagnostics","Body":{"FileName":"C:\\testomni\\testomni.csproj","Warnings":[],"Errors":[]},"Seq":18,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.MSBuild.ProjectManager","Message":"Adding project 'C:\\testomni\\testomni.csproj'"},"Seq":19,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.MSBuild.ProjectManager","Message":"Update project: testomni"},"Seq":20,"Type":"event"}
{"Event":"ProjectAdded","Body":{"MsBuildProject":{"ProjectGuid":"00000000-0000-0000-0000-000000000000","Path":"C:\\testomni\\testomni.csproj","AssemblyName":"testomni","TargetPath":"C:\\testomni\\bin\\Debug\\netcoreapp2.1\\testomni.dll","TargetFramework":".NETCoreApp,Version=v2.1","SourceFiles":["C:\\testomni\\UnitTest1.cs","C:\\Temp\\.NETCoreApp,Version=v2.1.AssemblyAttributes.cs","C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.Program.cs","C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs"],"TargetFrameworks":[{"Name":".NETCoreApp","FriendlyName":".NETCoreApp","ShortName":"netcoreapp2.1"}],"OutputPath":"bin\\Debug\\netcoreapp2.1\\","IntermediateOutputPath":"obj\\Debug\\netcoreapp2.1\\","Configuration":"Debug","Platform":"AnyCPU","IsExe":true,"IsUnityProject":false}},"Seq":21,"Type":"event"}
{"Event":"ProjectChanged","Body":{"MsBuildProject":{"ProjectGuid":"00000000-0000-0000-0000-000000000000","Path":"C:\\testomni\\testomni.csproj","AssemblyName":"testomni","TargetPath":"C:\\testomni\\bin\\Debug\\netcoreapp2.1\\testomni.dll","TargetFramework":".NETCoreApp,Version=v2.1","SourceFiles":["C:\\testomni\\UnitTest1.cs","C:\\Temp\\.NETCoreApp,Version=v2.1.AssemblyAttributes.cs","C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.Program.cs","C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs"],"TargetFrameworks":[{"Name":".NETCoreApp","FriendlyName":".NETCoreApp","ShortName":"netcoreapp2.1"}],"OutputPath":"bin\\Debug\\netcoreapp2.1\\","IntermediateOutputPath":"obj\\Debug\\netcoreapp2.1\\","Configuration":"Debug","Platform":"AnyCPU","IsExe":true,"IsUnityProject":false}},"Seq":22,"Type":"event"}
{"seq": 1, "Command": "/codecheck"}
{"Request_seq":1,"Command":"/codecheck","Running":true,"Success":true,"Message":null,"Body":{"QuickFixes":[{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\UnitTest1.cs","Line":5,"Column":6,"EndLine":5,"EndColumn":15,"Text":"El tipo predefinido 'System.Object' no está definido ni importado","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0616","FileName":"C:\\testomni\\UnitTest1.cs","Line":5,"Column":6,"EndLine":5,"EndColumn":15,"Text":"'TestClassAttribute' no es una clase de atributos","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\UnitTest1.cs","Line":5,"Column":6,"EndLine":5,"EndColumn":15,"Text":"El tipo predefinido 'System.Void' no está definido ni importado","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\UnitTest1.cs","Line":6,"Column":18,"EndLine":6,"EndColumn":27,"Text":"El tipo predefinido 'System.Object' no está definido ni 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'System.Runtime, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0433","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs","Line":16,"Column":30,"EndLine":16,"EndColumn":58,"Text":"El tipo 'AssemblyFileVersionAttribute' existe en 'System.Runtime, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' y en 'System.Runtime, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0433","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs","Line":17,"Column":30,"EndLine":17,"EndColumn":67,"Text":"El tipo 'AssemblyInformationalVersionAttribute' existe en 'System.Runtime, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' y en 'System.Runtime, Version=4.1.0.0, Culture=neutral, 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importado","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs","Line":16,"Column":59,"EndLine":16,"EndColumn":68,"Text":"El tipo predefinido 'System.String' no está definido ni importado","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs","Line":17,"Column":68,"EndLine":17,"EndColumn":75,"Text":"El tipo predefinido 'System.String' no está definido ni importado","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs","Line":18,"Column":55,"EndLine":18,"EndColumn":65,"Text":"El tipo predefinido 'System.String' no está definido ni importado","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs","Line":19,"Column":53,"EndLine":19,"EndColumn":63,"Text":"El tipo predefinido 'System.String' no está definido ni importado","Projects":["testomni"]},{"LogLevel":"Error","Id":"CS0518","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs","Line":20,"Column":55,"EndLine":20,"EndColumn":64,"Text":"El tipo predefinido 'System.String' no está definido ni importado","Projects":["testomni"]},{"LogLevel":"Hidden","Id":"CS8019","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs","Line":11,"Column":1,"EndLine":11,"EndColumn":14,"Text":"Directiva Using innecesaria.","Projects":["testomni"]},{"LogLevel":"Hidden","Id":"CS8019","FileName":"C:\\testomni\\obj\\Debug\\netcoreapp2.1\\testomni.AssemblyInfo.cs","Line":12,"Column":1,"EndLine":12,"EndColumn":25,"Text":"Directiva Using innecesaria.","Projects":["testomni"]}]},"Seq":23,"Type":"response"}

@DustinCampbell
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Contributor

Hmmm.... Any chance you could share the project?

@ramon-garcia
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Author

It is a trivial project created with "dotnet new mstest"

@HughGrovesArup
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I have the same issue as described. I have Visual Studio Express 2017 installed, which does not support dotnet core (hence exploring VS Code + the C# extenstion).#

Looking at my logs its finding the version of msbuild installed with VS express. How do I change where it looks?

I was just trying to follow this guide https://docs.microsoft.com/en-us/dotnet/core/testing/unit-testing-with-mstest

Output from dotnet --info

.NET Core SDK (reflecting any global.json):
 Version:   2.2.102
 Commit:    96ff75a873

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.17134
 OS Platform: Windows
 RID:         win10-x64
 Base Path:   C:\Program Files\dotnet\sdk\2.2.102\

Host (useful for support):
  Version: 2.2.1
  Commit:  878dd11e62

.NET Core SDKs installed:
  1.1.11 [C:\Program Files\dotnet\sdk]
  2.2.102 [C:\Program Files\dotnet\sdk]

.NET Core runtimes installed:
  Microsoft.AspNetCore.All 2.2.1 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.App 2.2.1 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 1.0.13 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 1.1.10 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.2.1 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]

Output from omnisharp log

Starting OmniSharp server at 22/04/2019, 14:08:46
    Target: c:\Users\Hugh.Groves\Documents\VS Code Projects\unit-testing-using-mstest\unit-testing-using-mstest.sln

OmniSharp server started.
    Path: C:\Users\Hugh.Groves\.vscode\extensions\ms-vscode.csharp-1.19.0\.omnisharp\1.32.18\OmniSharp.exe
    PID: 512

[info]: OmniSharp.Stdio.Host
        Starting OmniSharp on Windows 6.2.9200.0 (x64)
[info]: OmniSharp.Services.DotNetCliService
        DotNetPath set to dotnet
[info]: OmniSharp.MSBuild.Discovery.MSBuildLocator
        Located 2 MSBuild instance(s)
            1: Visual Studio 2017 Desktop Express 15.9.28307.280 - "C:\Program Files (x86)\Microsoft Visual Studio\2017\WDExpress\MSBuild\15.0\Bin"
            2: StandAlone 15.0 - "C:\Users\Hugh.Groves\.vscode\extensions\ms-vscode.csharp-1.19.0\.omnisharp\1.32.18\.msbuild\Current\Bin"
[info]: OmniSharp.MSBuild.Discovery.MSBuildLocator
        Registered MSBuild instance: Visual Studio 2017 Desktop Express 15.9.28307.280 - "C:\Program Files (x86)\Microsoft Visual Studio\2017\WDExpress\MSBuild\15.0\Bin"
[info]: OmniSharp.Cake.CakeProjectSystem
        Detecting Cake files in 'c:\Users\Hugh.Groves\Documents\VS Code Projects\unit-testing-using-mstest'.
[info]: OmniSharp.Cake.CakeProjectSystem
        Could not find any Cake files
[info]: OmniSharp.WorkspaceInitializer
        Project system 'OmniSharp.DotNet.DotNetProjectSystem' is disabled in the configuration.
[info]: OmniSharp.MSBuild.ProjectSystem
        Detecting projects in 'c:\Users\Hugh.Groves\Documents\VS Code Projects\unit-testing-using-mstest\unit-testing-using-mstest.sln'.
[info]: OmniSharp.MSBuild.ProjectManager
        Queue project update for 'c:\Users\Hugh.Groves\Documents\VS Code Projects\unit-testing-using-mstest\PrimeService\PrimeService.csproj'
[info]: OmniSharp.MSBuild.ProjectManager
        Queue project update for 'c:\Users\Hugh.Groves\Documents\VS Code Projects\unit-testing-using-mstest\PrimeService.Tests\PrimeService.Tests.csproj'
[info]: OmniSharp.Script.ScriptProjectSystem
        Detecting CSX files in 'c:\Users\Hugh.Groves\Documents\VS Code Projects\unit-testing-using-mstest'.
[info]: OmniSharp.Script.ScriptProjectSystem
        Could not find any CSX files
[info]: OmniSharp.WorkspaceInitializer
        Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.CSharpWorkspaceOptionsProvider
[info]: OmniSharp.MSBuild.ProjectManager
        Loading project: c:\Users\Hugh.Groves\Documents\VS Code Projects\unit-testing-using-mstest\PrimeService\PrimeService.csproj
[info]: OmniSharp.WorkspaceInitializer
        Configuration finished.
[info]: OmniSharp.Stdio.Host
        Omnisharp server running using Stdio at location 'c:\Users\Hugh.Groves\Documents\VS Code Projects\unit-testing-using-mstest' on host 18792.
[info]: OmniSharp.MSBuild.ProjectManager
        Successfully loaded project file 'c:\Users\Hugh.Groves\Documents\VS Code Projects\unit-testing-using-mstest\PrimeService\PrimeService.csproj'.
[info]: OmniSharp.MSBuild.ProjectManager
        Adding project 'c:\Users\Hugh.Groves\Documents\VS Code Projects\unit-testing-using-mstest\PrimeService\PrimeService.csproj'
[info]: OmniSharp.MSBuild.ProjectManager
        Loading project: c:\Users\Hugh.Groves\Documents\VS Code Projects\unit-testing-using-mstest\PrimeService.Tests\PrimeService.Tests.csproj
[info]: OmniSharp.MSBuild.ProjectManager
        Successfully loaded project file 'c:\Users\Hugh.Groves\Documents\VS Code Projects\unit-testing-using-mstest\PrimeService.Tests\PrimeService.Tests.csproj'.
[info]: OmniSharp.MSBuild.ProjectManager
        Adding project 'c:\Users\Hugh.Groves\Documents\VS Code Projects\unit-testing-using-mstest\PrimeService.Tests\PrimeService.Tests.csproj'
[info]: OmniSharp.MSBuild.ProjectManager
        Update project: PrimeService
[info]: OmniSharp.MSBuild.ProjectManager
        Update project: PrimeService.Tests

@niketgosrani
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I am facing the same issue when I create a project with "dotnet new xunit" and see the error for folder obj -> Debug -> netcoreapp2.2 -> AssemblyInfo.cs file

//------------------------------------------------------------------------------
//
// This code was generated by a tool.
// Runtime Version:4.0.30319.42000
//
// Changes to this file may cause incorrect behavior and will be lost if
// the code is regenerated.
//
//------------------------------------------------------------------------------

using System;
using System.Reflection;

[assembly: System.Reflection.AssemblyCompanyAttribute("GradeBook.Tests")]
[assembly: System.Reflection.AssemblyConfigurationAttribute("Debug")]
[assembly: System.Reflection.AssemblyFileVersionAttribute("1.0.0.0")]
[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0")]
[assembly: System.Reflection.AssemblyProductAttribute("GradeBook.Tests")]
[assembly: System.Reflection.AssemblyTitleAttribute("GradeBook.Tests")]
[assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]

// Generated by the MSBuild WriteCodeFragment class.

***The one's in bold are all showing errors

@HughGrovesArup
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@DustinCampbell - is there any simple way to workaround this? Can I force omnisharp to look at a specific location for MSBuild rather than relying on it auto-finding the wrong one?

@HughGrovesArup
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Found this issue, seems to be that you need to rename the visual studio folder so that OmniSharp doesn't find it. Not a great solution. Would be much better if I could per-project point omnisharp at the version I want to use.

dotnet/vscode-csharp#1727

@HughGrovesArup HughGrovesArup mentioned this issue May 7, 2019
Closed
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4 participants
@DustinCampbell @ramon-garcia @niketgosrani @HughGrovesArup