Why prefix C# interface names with an “I”

Question

What is the rationale behind this naming convention?

I don\'t see any benefit. The extra prefix just pollutes the API.

My thinking is inline with Konrad\'s respo

Answer 1

With all of the arguments about naming conventions and giving proper names to variables and methods that actually describe what they do...why not just name your interfaces (e.g. PetInterface, PlayerInterface, etc.) and do away with the prefix "I" all together. So what you have to type an additional 9 letters, at least the "I" is removed and we know it is not a class, because it says "Interface".