How to use c#7 with Visual Studio 2015?

问题:

Visual Studio 15 can be configured to play with some features of C#7, but what about Visual Studio 2015?

How can I use C#7 with it?

回答1:

You can replace the compiler shipped with Visual Studio for a C# 7-enabled version by installing the Nuget package Microsoft.Net.Compilers:

Referencing this package will cause the project to be built using the specific version of the C# and Visual Basic compilers contained in the package, as opposed to any system installed version.

There is no indication that I can see on the package page as to whether this is officially supported in Visual Studio 2015. My not-thorough tests so far indicate that it works but not painlessly - C# 7 code compiles, but is underlined with the red squiggly line which indicates a syntax error:

Note that you will also need to install the Nuget package System.ValueTuple to use the new C# 7 value tuples features.

文章来源: How to use c#7 with Visual Studio 2015?