C # protected Public Private internal

1 internal can only be referenced in one project, not across project references, only in files of the same assembly

2 public access at the highest level has no limit on access to common members

3 private access at the lowest level can only be accessed in the class that declares them or in the struct

4 protected protected Access in its class and in its derived class are allowed access to the

Public popularity is good, with everyone good,
Protect and acquaintances only good,
Private comparison is self-closing.
But they are triplets.
Class is their father.

C # protected Public Private internal