Compiler says I am not implementing my interface, but I am?

Question

Okay, I have two namespaces. One contains my interface and one contains the implementing class. Like this:

namespace Project.DataAccess.Interfaces
{
    public i         


        

Answer 1

I think declaring it explicitly with string IAccount.SomeMethod() works because .NET knows that this implementation of the method can only be accessed through the interface, and so it carries over the public visibility from the interface. In other words, since you are explicitly saying it is an interface member, the compiler can imply that it has to be public, so you don't have to re-state the obvious.

This is also discussed here: http://msdn.microsoft.com/en-us/library/aa664591%28v=vs.71%29.aspx

It is a compile-time error for an explicit interface member implementation to include access modifiers, and it is a compile-time error to include the modifiers abstract, virtual, override, or static.

Explicit interface member implementations have different accessibility characteristics than other members. Because explicit interface member implementations are never accessible through their fully qualified name in a method invocation or a property access, they are in a sense private. However, since they can be accessed through an interface instance, they are in a sense also public.