C# Language Specification - Willy .Net

C# LANGUAGE SPECIFICATIONinternal class B{public static int X;internal static int Y;private static int Z;public class C{public static int X;internal static int Y;private static int Z;}private class D{public static int X;internal static int Y;private static int Z;}}the classes and members have the following accessibility domains:• The accessibility domain of A and A.X is unlimited.• The accessibility domain of A.Y, B, B.X, B.Y, B.C, B.C.X, and B.C.Y is the program text of thecontaining program.• The accessibility domain of A.Z is the program text of A.• The accessibility domain of B.Z and B.D is the program text of B, including the program text of B.Cand B.D.• The accessibility domain of B.C.Z is the program text of B.C.• The accessibility domain of B.D.X and B.D.Y is the program text of B, including the program text ofB.C and B.D.• The accessibility domain of B.D.Z is the program text of B.D.As the example illustrates, the accessibility domain of a member is never larger than that of a containingtype. For example, even though all X members have public declared accessibility, all but A.X haveaccessibility domains that are constrained by a containing type. end example]As described in §10.4, all members of a base class, except for instance constructors, destructors, and staticconstructors are inherited by derived types. This includes even private members of a base class. However,the accessibility domain of a private member includes only the program text of the type in which themember is declared. [Example: In the exampleclass A{int x;static void F(B b) {b.x = 1; // Ok}}class B: A{static void F(B b) {b.x = 1; // Error, x not accessible}}the B class inherits the private member x from the A class. Because the member is private, it is onlyaccessible within the class-body of A. Thus, the access to b.x succeeds in the A.F method, but fails in theB.F method. end example]76