What's the difference between dotnet_diagnostics and equivalent rules under dotnet_style

For example, in .editorconfig I can require fields to be readonly using both:

# IDE0044: Make field readonly
dotnet_diagnostic.IDE0044.severity = warning

and

dotnet_style_readonly_field = true:warning

Both will show up in the editor, both will cause the issue to be fixed upon running dotnet format. What are the differences between both options?

CodePudding user response：

The compiler is not aware of the option = value:severity syntax, e.g:

dotnet_style_readonly_field = true:warning

So if you use that, the build will produce warnings/errors only for IDE live analysis. But if you want to enforce code-style on build, you need to use the dotnet_diagnostic.RuleId.severity = severity syntax.