String interpolation doesn't work with .NET Framework 4.6

Question

I just installed the .NET Framework 4.6 on my machine and then created a ConsoleApplication targeting .NET Framework 4.6 with Visual Studio 2013.

I wrote the following in the Main method:

  string test = "Hello";
  string format = $"{test} world!";

But this does not compile. Doing the same in Visual Studio 2015 works.
Why?

Answer 1

String interpolation is a C# 6.0 feature, not one of .NET Framework 4.6. VS 2013 doesn't support C# 6 but VS 2015 does.