rider C#代码颜色没有高亮

https://stackoverflow.com/questions/44827059/syntax-highlighting-with-c/44955728

1.

File -> Settings -> Editor -> Inspection Settings you can turn of color higlighting, maybe it is off   勾选上

2.

Editor->Colir Scheme -> C# ->Methods->Method -> Inherit values from 勾选去掉

3.

有的文件过大，在文件的右上角有个HighLight None， 选择 All 进行高亮