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(\"-\", \"\")}_{         


        

Answer 1

The key is to see the compilerOptions="/langversion:6 portion of the following in your web.config. Without it I got errors trying to use string interpolation inside a .cshtml file.