问题
If I set the LangVersion to 7, I get the following error:
Error:CS1617: Invalid option '7' for /langversion;
must be ISO-1, ISO-2, Default or an integer in range 1 to 6.
I can't install Visual Studio 2017.
回答1:
Unfortunately for now it is not possible on mac/linux, but it is planned - around Q1 2017.
Source: https://rider-support.jetbrains.com/hc/en-us/community/posts/205987804-Rider-and-C-7-
来源：https://stackoverflow.com/questions/42830694/enabling-c-sharp-7-compilation-in-project-rider