Class definition, member-defined modifiers

Definition of Class
	Modifier	Meaning
1	None or internal	Classes can only be accessed in the current project and cannot be accessed after other projects are referenced
2	Public	can access the class anywhere
3	Abstract	cannot be instantiated, only for inheritance
4	Sealed	cannot be used for derivation, can only be instantiated
5	Internal abstract	1+3
6	public abstract	2+3
7	Internal sealed	1+4
8	public sealed	2+4
Definition of a Member
1	Public	Members can be accessed by any code.
2	Protected	Members can only be accessed by code in a class or derived class.
3	Internal	Members can only be accessed by code inside the assembly.
4	protected internal	They can only be accessed by the code of the derived class in the assembly.
5	Private	Members can only be accessed by code in the class (this keyword is used by default if no keyword is used).
6	Static	Declares fields, methods, and properties, which means that they are static members of a class, not members of an object instance

Class definition, member-defined modifiers