Duplicated using directives in multiple files

Question

I have got 5 C# files that have 20 using directives in common. I want to get rid of this code duplication, especially because these 20 using directives belong logically toge

Answer 1

Simple answer. If your code files are using 20 common using statements, they should not be separated into 20 statements. Also, I wouldn't worry that much over that kind of code duplication. It's not hitting your runtime performance in any way, so it's not really related to DRY paradigm.