Using C# 6 with WCF-CodePudding

I would like to use interpolated strings in this old WCF project, and I have tried to change the target framework to .NET Framework 4.8 (from project pages). But this does not seem to change the C# version from 5 to 6.

I'm still getting the error

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

Is this even possible?

CodePudding user response：

You have to update language version in your .csproj file,

<PropertyGroup>
   <LangVersion>6</LangVersion>
</PropertyGroup>

When you use language version as a 6, compiler accepts only syntax that is included in C# 6.0 or lower.

If you want to use any features which are included in higher or the latest version of C# like pattern matching, switch expression, global using then you can use latest instead of 6.

More details, kindly check C# language version reference

CodePudding user response：

edit the csproj: <LangVersion>6</LangVersion> (or higher); done