C# Suggestions Stopped Working

[fastfilm]

Environment data

dotnet --info output:
.NET Command Line Tools (2.0.2)

Product Information:
Version: 2.0.2
Commit SHA-1 hash: a04b4bf512

Runtime Environment:
OS Name: Windows
OS Version: 10.0.16299
OS Platform: Windows
RID: win10-x64
Base Path: C:\Program Files\dotnet\sdk\2.0.2\

Microsoft .NET Core Shared Framework Host

Version : 2.0.0
Build : e8b8861ac7faf042c87a5c2f9f2d04c98b69f28d

VS Code version:
Version: 1.27.1 (system setup)
Commit: 5944e81f3c46a3938a82c701f96d7a59b074cfdc
Date: 2018-09-06T09:21:18.328Z
Electron: 2.0.7
Chrome: 61.0.3163.100
Node.js: 8.9.3
V8: 6.1.534.41
Architecture: x64

C# Extension version:
1.16

Steps to reproduce

Create a .cs file, using System; Make a string variable, try to use "intellisense", i.e. auto-complete suggestions by typing ctrl-space.
It was working before now it doesn't. I updated VS Code so perhaps that had something to do with it.

.csproj file contains this:

    <Project Sdk="Microsoft.NET.Sdk">
      <PropertyGroup>
        <OutputType>Exe</OutputType>
        <TargetFramework>netcoreapp2.0</TargetFramework>
      </PropertyGroup>
      <ItemGroup>
        <PackageReference Include="Newtonsoft.Json" Version="11.0.2"/>
      </ItemGroup>
    </Project>

It also doesn't suggest anything for methods on my own classes.

Expected behavior

Should suggest methods on string, like "Replace".

Actual behavior

minimal suggestion of "region" (doesn't seem like a useful suggestion either).

[akshita31]

@fastfilm Can you post the output from "C#" and "OmniSharp log" from View--> Output window ?

[fastfilm]

Sorry, I'm no VS Code expert, I don't know how to generate "output from C# and Omnisharp log". I can open the View --> Output window and it is blank. I can open the Developer tools, and I see this:

[fastfilm]

Ah, I found the Omnisharp log.

Can't find a C# log -- here are my options on the right-hand menu drop-down:

[akshita31]

Ok so the problem here is that the omnisharp server could not start for you. Can you uninstall and reinstall the extension ? And when you reload vscode for the first time after installing the extension , you might find a c# log.

[fastfilm]

I tried uninstalling the extension once before. Recently I tried uninstalling VSCode and re-installing it. Just now I tried uninstalling and re-installing the extension. The logs appear the same -- the Omnisharp log shows the same error, and there is no option to view a C# log.

[akshita31]

Can you delete the "install.Lock" file and ".omnisharp" folder in the ".vscode/extensions/msvscode.csharp-1.16.0" folder and then restart vscode ?

[fastfilm]

Hi Akshita -- After a bit of searching, I found the .vscode folder you were talking about. At first, I thought you meant the .vscode folder in the project, but there wasn't much there. So I poked around and find one under Users. I removed the file and folder you mentioned. I then re-started VS Code. There is now a C# log:

And here is the Omnisharp log:

Thanks for looking into this.

[akshita31]

@fastfilm This suggests that omnisharp is downloaded successfully but some how there is a problem with starting the process. Can you try adding C:\Windows\System32\ to your system path variables and then restarting vscode ?

[fastfilm]

That was the problem. My path recently got stomped on by something (not 100% certain who the guilty party is). Of course I didn't have a backup of it, so I didn't know what was in it. Apparently, Windows\System32 was part of it. How did you suspect that might be the issue?
Thanks, hope this might help someone else as well. Perhaps the path requirement should be documented somewhere, though I'm not certain where.

[akshita31]

@fastfilm Gald you got it working. This is not a common error with omnisharp so I searched stack overflow for for "spawn cmd ENOENT" and got that suggestion there.