Question

I know that internal class has to be static because will link between public and internal classes and internal class will be created all times that created public classes.
And my question how to check it?
I mean write some simple application and make some loop for creating objects and see that objects do not deleted by GC in some profiler, Can I to do something like that nad some one done it?
Thanks.

Answer 1

internal class will be created all times that created public classes

If you mean that an instance of the inner class will always be created when you create an instance of the outer class, that is not true.

You can have outer instances with no attached inner instances, and the same outer instance can have any number of attached inner instances (and of different inner classes, too).

It is (somewhat) the opposite rather: When you create an instance of the (non-static) inner class, that instance will contain a reference to its outer instance (but that is a reference to an already existing object, not a new one: You cannot create the inner instance without having the outer one first).