OmniSharp 返回 System.IO.FileNotFoundException答案

【问题标题】：OmniSharp returning System.IO.FileNotFoundExceptionOmniSharp 返回 System.IO.FileNotFoundException
【发布时间】：2021-12-28 10:16:16
【问题描述】：

我正在尝试使用 Unity 自动完成，但我不断收到以下消息：

Starting OmniSharp server at 12/28/2021, 4:12:57 AM
    Target: d:\UnityHub\Igor\Igor.sln

OmniSharp server started.
    Path: c:\Users\james\.vscode\extensions\ms-dotnettools.csharp-1.23.17\.omnisharp\1.37.17\OmniSharp.exe
    PID: 21752

[info]: OmniSharp.Stdio.Host
        Starting OmniSharp on Windows 6.2.9200.0 (x64)
[info]: OmniSharp.Services.DotNetCliService
        Checking the 'DOTNET_ROOT' environment variable to find a .NET SDK
[info]: OmniSharp.Services.DotNetCliService
        Using the 'dotnet' on the PATH.
[info]: OmniSharp.Services.DotNetCliService
        DotNetPath set to dotnet
System.IO.FileNotFoundException: C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\MSBuild\15.0\Bin\Microsoft.Build.dll
   at System.Diagnostics.FileVersionInfo.GetVersionInfo(String fileName)
   at OmniSharp.MSBuild.Discovery.MSBuildInstanceProvider.GetMSBuildVersion(String microsoftBuildPath) in D:\a\1\s\src\OmniSharp.Host\MSBuild\Discovery\MSBuildInstanceProvider.cs:line 104
   at OmniSharp.MSBuild.Discovery.Providers.MicrosoftBuildLocatorInstanceProvider.<>c.<GetInstances>b__1_0(VisualStudioInstance instance) in D:\a\1\s\src\OmniSharp.Host\MSBuild\Discovery\Providers\MicrosoftBuildLocatorInstanceProvider.cs:line 30
   at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
   at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
   at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
   at System.Collections.Immutable.ImmutableArray.CreateRange[T](IEnumerable`1 items)
   at OmniSharp.MSBuild.Discovery.MSBuildLocator.GetInstances() in D:\a\1\s\src\OmniSharp.Host\MSBuild\Discovery\MSBuildLocator.cs:line 115
   at OmniSharp.MSBuild.Discovery.Extensions.GetBestInstance(IMSBuildLocator msbuildLocator, Version minimumMSBuildVersion, ILogger logger, Boolean& invalidVSFound, Boolean& vsWithoutSdkResolver) in D:\a\1\s\src\OmniSharp.Host\MSBuild\Discovery\Extensions.cs:line 109
   at OmniSharp.MSBuild.Discovery.Extensions.RegisterDefaultInstance(IMSBuildLocator msbuildLocator, ILogger logger, DotNetInfo dotNetInfo) in D:\a\1\s\src\OmniSharp.Host\MSBuild\Discovery\Extensions.cs:line 17
   at OmniSharp.CompositionHostBuilder.Build(String workingDirectory) in D:\a\1\s\src\OmniSharp.Host\CompositionHostBuilder.cs:line 71
   at OmniSharp.Stdio.Host..ctor(TextReader input, ISharedTextWriter writer, IOmniSharpEnvironment environment, IServiceProvider serviceProvider, CompositionHostBuilder compositionHostBuilder, ILoggerFactory loggerFactory, CancellationTokenSource cancellationTokenSource) in D:\a\1\s\src\OmniSharp.Stdio\Host.cs:line 49
   at OmniSharp.Stdio.Driver.Program.<>c__DisplayClass0_1.<Main>b__1() in D:\a\1\s\src\OmniSharp.Stdio.Driver\Program.cs:line 74
   at McMaster.Extensions.CommandLineUtils.CommandLineApplication.<>c__DisplayClass146_0.<OnExecute>b__0(CancellationToken _)
   at McMaster.Extensions.CommandLineUtils.CommandLineApplication.<ExecuteAsync>d__157.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at McMaster.Extensions.CommandLineUtils.CommandLineApplication.Execute(String[] args)
   at OmniSharp.HostHelpers.Start(Func`1 action) in D:\a\1\s\src\OmniSharp.Host\HostHelpers.cs:line 29

我不太确定发生了什么，但我也安装了 Visual Studio，但作为解决方案也失败了。

【问题讨论】：

嗨，我也面临这个问题。你解决了吗？
我稍微“解决”了它，我最终只是重新安装了 Windows。

标签： c# .net visual-studio-code vscode-extensions omnisharp

【解决方案1】：

我遇到了同样的问题，我从这个 reddit 帖子中得到了这个： https://www.reddit.com/r/vscode/comments/ooyijp/issue_with_omnisharpc_extension/

“您需要告诉 VS Code 只使用omnisharp 附带的捆绑MSBuild 版本。每https://github.com/OmniSharp/omnisharp-vscode/issues/4358

您可以使用以下内容将omnisharp.json 添加到工作区的根目录

{ "msbuild": { "useBundledOnly": true } }

为了全局效果，文件可以放到%USERPROFILE%/.omnisharp/"

【讨论】：