Extension not suggesting to use explicit type instead of var

[jffaust]

Issue Description

I have a couple of variables declaration using var instead of the explicit type. In Visual Studio, Omnisharp would suggest me to use the explicit type instead and I could make the change automatically by using the keyboard shortcut (Ctrl+.).

This was super useful and I can't figure out how to make it work inside VS Code. I was not able to find any documentation, issues or articles related to this so I'm creating a new issue.

In this specific case I was doing a LINQ group by and I wanted to be able to use the explicit type and then go look at the type definition for IGrouping.

Steps to Reproduce

var myCustomObject = new CustomObject();

Expected Behavior

Suggest the option to use the explicit type when using the code actions keyboard shortcut.

Actual Behavior

Missing suggestion:

Environment information

VSCode version: 1.46.1
C# Extension: 1.22.1

Dotnet Information

.NET Core SDK (reflecting any global.json): Version: 3.1.301 Commit: 7feb845744

Runtime Environment:
OS Name: Windows
OS Version: 10.0.18362
OS Platform: Windows
RID: win10-x64
Base Path: C:\Program Files\dotnet\sdk\3.1.301\

Host (useful for support):
Version: 3.1.5
Commit: 65cd789777

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

.NET Core runtimes installed:
Microsoft.AspNetCore.All 2.1.19 [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 2.1.19 [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 3.1.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 2.1.19 [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 3.1.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 3.1.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

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

Visual Studio Code Extensions

Extension	Author	Version
auto-run-command	gabrielgrinberg	1.6.0
azure-account	ms-vscode	0.8.11
csharp	ms-dotnettools	1.22.1
githistory	donjayamanne	0.6.5
powershell-preview	ms-vscode	2020.6.1
prettier-vscode	esbenp	5.1.3
vscode-azurefunctions	ms-azuretools	0.23.0
vscode-icons	vscode-icons-team	10.1.1
vscode-nuget-package-manager	jmrog	1.1.6

[cartermp]

This is driven from a .editorconfig where conventions for var vs. explicit types are configured. Roslyn uses that to determine when to suggest style changes. Is .editorconfig in use for your codebase?

You can get started here: https://docs.microsoft.com/en-us/visualstudio/ide/editorconfig-language-conventions?view=vs-2019#implicit-and-explicit-types

[jffaust]

That's exactly what I was looking for :)

Thanks a lot :)

[romerobrjp]

This is driven from a .editorconfig where conventions for var vs. explicit types are configured. Roslyn uses that to determine when to suggest style changes. Is .editorconfig in use for your codebase?

You can get started here: https://docs.microsoft.com/en-us/visualstudio/ide/editorconfig-language-conventions?view=vs-2019#implicit-and-explicit-types

Didn't work for me =/

[JoeRobich]

@rom5jp You need to also set "omnisharp.enableRoslynAnalyzers" to "true" in the VS Code preferences if you haven't already.