Can C# file restrict for adding specific access modifier variables?

Question

I have a requirement that all my .cs file variables should be protected. Is there a way to restrict adding private access modifier type variables to this type of files?

Answer 1

You might use StyleCop or implement a custom code analyser

Answer 2

Though that's a typical requirement but if it's a organization coding rule then you can use Microsoft FxCop static code analysis tool and define your own rule set; which then per your setting may cause the build to fail or throw warning if the rule isn't met