ReSharper by Language: C#
ReSharper 2020.1 fully supports all C# versions up to C# 8.0. C# is the primary programming language ReSharper is intended for, and therefore all ReSharper features (excluding some features specific to other languages) are supported in C# (for more information, see ReSharper Features in Different Languages).
By default, ReSharper automatically detects language version based on the associated compiler. However, you can specify the target language version explicitly — right-click the project in the Solution Explorer, choose Edit project item properties from the context menu and use the language Language Level selector. .
Depending on the current language version — whether it is detected automatically or set explicitly — ReSharper adjusts its features. For example, code inspection detects places in your code, which could be simplified using new language features.
Information on ReSharper features in C# is available in the following sections: