Feature 'interpolated strings' is not available in C# 5. Please use language version 6 or greater.

Question

The following line does not compile when I put in a Razor View.

var extPropLookupNameCompania = $"extension_{SettingsHelper.ClientId.Replace("-", "")}_{"Compania"}";

However in the controller the same line works perfectly fine.

Why I cant user string interpolation on the razor views? or Maybe I need to configure something?

Answer 1

You have to encapsulate it with braces like this:

EDIT: I updated because there was a missing curly.

var extPropLookupNameCompania = $("{extension_{SettingsHelper.ClientId.Replace("-", "")}_{"Compania"}");

I tried the following successfully:

 @($"It is {DateTime.Now}")

Answer 2

If you are experiencing this error in a .NET Framework 4.5.1 project, upgrading to 4.5.2 solves the problem.