Access Modifiers

Members that are defined in type by any scope on specific are always accessible within the type. Restrictions comes into picture only when we try to access them outside of the type. Members declared as private under a class or structure cant be access outside of the type in which they are defined and moreover there default scope is private only.

Types cant be declare as private so private can be use only on members. One point to keep in mind is that Interface cant contain any members and default scope for interface members is public.

• Protected: Members declared as protected under a class be accessed only within the class or in a child class.Non child classes cant consume them. Types cant be declared as protected also, so this can only be used on members.

• Internal: Members and types that are declared as internal can be consumed only within the project bot both from child or non child. The default scope for any type in C# is internal only.

• Protected Internal: Members declared as protected will have dual scope i.e within the project they behave as internal providing access to anywhere in project outside the classes they will change to protected and still provide access to their child classes. Types cannot be declared as protected internal also. So this can also be used only on members.

• Public: A type or member of a type if declared as public is global in scope which can be accessed from anywhere.