Omnisharp-vscode: wrapped assembly reference issues (The type or namespace 'X' could not be found, are you missing...)

[remcoros]

Environment data

.NET Command Line Tools (1.0.0-preview2-002820)

Product Information:
Version: 1.0.0-preview2-002820
Commit SHA-1 hash: d307537eb8

Runtime Environment:
OS Name: Windows
OS Version: 10.0.10586
OS Platform: Windows
RID: win10-x64

VS Code version: 1.2 / 1.3-insiders
C# Extension version: 1.1.5

Steps to reproduce

I have set up a demo repository here: https://github.com/remcoros/vscode-omnisharp-assemblydemo

Expected behavior

No errors are visible in vscode.

Actual behavior

VSCode shows an error:

The type or namespace name 'ADODB' could not be found (are you missing a using directive or an assembly reference?) [net46]

Notes

'dotnet build' works as expected.

omnisharp output

[INFO] Starting OmniSharp at 'c:\Projects\vscode-assemblydemo'...
[INFO] Started OmniSharp from 'C:\Users\rro.vscode-insiders\extensions\ms-vscode.csharp-1.1.5.omnisharp\OmniSharp.exe' with process id 26384...
OmniSharp: -s c:\Projects\vscode-assemblydemo --hostPID 14564 dnx:enablePackageRestore=false --stdio
[INFORMATION:OmniSharp.Startup] Omnisharp server running using Stdio at location 'c:\Projects\vscode-assemblydemo' on host 14564.
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem] Initializing in c:\Projects\vscode-assemblydemo
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem] Auto package restore: True
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem] Update workspace context
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem] Update project c:\Projects\vscode-assemblydemo\ADODB
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem] Add project c:\Projects\vscode-assemblydemo\ADODB\project.json => 43ce4340-cd80-4554-a957-f14c3cc810f0
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem] Update project c:\Projects\vscode-assemblydemo\Script
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem] Add project c:\Projects\vscode-assemblydemo\Script\project.json => 5b042b64-aa78-46d1-80a4-5b76bbd04343
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem] Resolving projects references
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem] Processing [ProjectState] ADODB/.NETFramework,Version=v3.5
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem] Added 3 and removed 0 file references
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem] Processing [ProjectState] Script/.NETFramework,Version=v4.6
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem] Added 9 and removed 0 file references
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem] Added 1 and removed 0 documents.
[INFORMATION:OmniSharp.MSBuild.MSBuildProjectSystem] No solution files found in 'c:\Projects\vscode-assemblydemo'
[INFORMATION:OmniSharp.ScriptCs.ScriptCsProjectSystem] Detecting CSX files in 'c:\Projects\vscode-assemblydemo'.
[INFORMATION:OmniSharp.ScriptCs.ScriptCsProjectSystem] Could not find any CSX files
[INFORMATION:OmniSharp.Startup] Configuration finished.

[elvirb]

I've been having this issue as well - since 1.0.10. Any updates on this?

[dsschnau]

Hey, I'm also seeing this issue in VS Code, specifically referencing XUnit. Same behavior, the dotnet CLI builds, runs, and tests are working. I'm using v 1.1.6 of this extension.

Here's my dotnet --info output.

.NET Command Line Tools (1.0.0-preview2-003121)

Product Information:
 Version:            1.0.0-preview2-003121
 Commit SHA-1 hash:  1e9d529bc5

Runtime Environment:
 OS Name:     ubuntu
 OS Version:  14.04
 OS Platform: Linux
 RID:         ubuntu.14.04-x64
.NET Command Line Tools (1.0.0-preview2-003121)

Product Information:
 Version:            1.0.0-preview2-003121
 Commit SHA-1 hash:  1e9d529bc5

Runtime Environment:
 OS Name:     ubuntu
 OS Version:  14.04
 OS Platform: Linux
 RID:         ubuntu.14.04-x64

[xplicit]

+10 To fix this. Intellisense does not work, Problems window is spammed with huge amount of non-existed errors and becomes unusable. VS code in this scenario works like a simple text editor with colorizing.

[tetious]

This also breaks when using a PCL assembly via Microsoft.NETCore.Portable.Compatibility with multiple mscorelib reference errors. At least I think that is what is happening.

[DustinCampbell]

Sorry for the delay on this! I have a fix specifically for the wrapped assembly case here: https://github.com/OmniSharp/omnisharp-roslyn/pull/749.

@tetious: It's not clear to me that your issue is the same thing. If you have a project that reproduces the problem, please go ahead and file a new issue.