Make each csproj in a solution target a different C# version

Question

I have a solution that contains five C# console application projects. I would like each project to target a different version of C#.

MyLearningSolution.sln
         


        

Answer 1

Right click on Project, go to Properites, There under Build click the Advanced.. button, there you can specify Language version.

Answer 2

This can be done by looking at the <LangVersion> element of the csproj file. Possible values:

<LangVersion>default</LangVersion>
<LangVersion>ISO-1</LangVersion>
<LangVersion>ISO-2</LangVersion>
<LangVersion>3</LangVersion>
<LangVersion>4</LangVersion>
<LangVersion>5</LangVersion>

To do it via the UI, go to Project Properties => Build => Advanced... => Language Version