nesting of class

Question

there is class A having class B(nested) in it . now i require to use class A's functionality again in B . is there any optimised way to implement this thing.?

eg.

class A

{

class B

{

// have to re-implement class A here,...

}

navjot chandi · Answer

thnks alan great job!

Maha · Answer

Thank you

Alan · Answer

Nested classes are treated as static members of the containing class. So to access the nested class B in class A the syntax is A.B. 'b' is then declared as a variable of that type and is assigned a new object in which the variable 'a'  containing a reference to an instance of A is passed to the constructor.

Maha · Answer

How to explain the code A . B b = new A . B (a); in the above program?

Alan · Answer

If by 'reimplement A' you mean get access to A's instance members within the nested class B then the usual way is to pass an A reference to B's constructor. For example: using System; class Test { static void Main() { A a = new A(); A.B b = new A.B(a); Console.ReadLine(); } } class A { private void AMethod() { Console.WriteLine(Hello from AMethod); } internal class B { A a; internal B(A a) { this.a = a; BMethod(); } private void BMethod() { Console.WriteLine(Hello from BMethod); a.AMethod(); } } } Notice that B even has access to A's private members.

Ryan Alford · Answer

class A { } class B : A { } it's called inheritance.