How do I disable C# 6 Support in Visual Studio 2015?

Question

Background

We have a project that we\'re developing in VS 2015 with C#6 enabled that occasionally needs to be opened by developers using VS 2013 without C#6.

Answer 1

add below in .sln.DotSettings should disable it on solution level

CSharp50

---

Or if you don't have a .sln.DotSettings file:

1. If your solution file is called Apple.sln, create a file beside it called Apple.sln.DotSettings.

2. Give it the following contents:

   
       CSharp50
   
   

3. Close and reopen the solution, Resharper should only warn you about C#5 things.

4. Don't forget to remove this when you eventually start using C#6 features! :)