Question

Is it possible to declare a class in C# that is only valid to be used within its namespace?

Example:

namespace a
{
    public class Dog
    {
        public void sayHello()
        {
            System.Console.WriteLine('hello');
        }
    }
}

namespace b
{
    public class DogWalker        
    {
        public void Walk() 
        {
            Dog dog = new Dog();
            dog.sayHello();
        }
    }
}

namespace a
{
    public class DogWalker
    {
        public void Walk() 
        {
            Dog dog = new Dog();
            dog.sayHello();
        }
    }
}

In the case above the DogWalker in Namespace b should throw an error message on compile, but DogWalker in namespace a should be allowed since its in the same namespace as the Dog.

If anyone can point me the right direction, it would be much appreciated.

Answer 1

You can achieve this by separating the classes into different assemblies and declaring them as internal.