Namespaces and subnamespaces in C#

Question

begginers question about C#.

In every program I have to include several namespaces, like:

using System;
using System.Collections.Generic;
using Syste         


        

Answer 1

System and System.Text are two different namespaces. That System.Text seems to be a part of System is the semantics we as programmer put into it. There's no such thing as a nested namespace from a platform view;

But even if that was not the case what should happen if you had

namespace MySystem{
   namespace Foo{
       class Bar {...}
   }

   class Bar{...}
}

using MySystem;
class MyClass{
    private Bar _myBar; //Which one is it MySystem.Foo.Bar or MySystem.Bar?     
}