Interfaces should be named with nouns or noun phrases, or adjectives that describe behaviour. For example IComponent
uses a descriptive noun, ICustomAttributeProvider
uses a noun phrase and IPersistable
uses an adjective.
Interface names should be prefixed with the letter I
, to indicate that the type is an interface, and Pascal case should be used.
Below are correctly named interfaces:
public interface IServiceProvider
public interface IFormatable