Multipul Inheritance in C#

Question

Hi I am little confused  How to solve the following senario. Let's say I have a class ClassA{ X(); Y(); } And classB{ Z(); } Now i want to create a classC which have Method X()Y() and Z(); But the limitation is i cant change anything of classA and classB Can any one help me ? Regrads Manas

Jaish Mathews · Answer

Design like below usign abstract class. public abstract class MyClasses { public virtual void X() { } public virtual void Y() { } public virtual void Z() { } //Add any furtehr methods here. } public class ClassA : MyClasses { public override void X() { } public override void Y() { } } public class classB : MyClasses { public override void Z() { } } public class classC : MyClasses { public override void X() { } public override void Y() { } public override void Z() { } }

manas · Answer

1.The structure is Class A{ X(); Y(); } Class B{ Z(); } This 2 classes i shouldn't modifye and i need to give a single class to my client The structure is Class C{ X(); Y(); Z(); } can it is possible.

Jaish Mathews · Answer

Mans Without providing correct infromation we can't assume any thing. It's not possible to define a class like below without class keyword and methods c an't put like X();Y();. It's giving compile time error to me. Class A{ X(); Y(); } Class B{ Z(); }

Jaish Mathews · Answer

Then you need to tell about the 3rd party dll. How they defined A and B. If they haev any implementations why you need to write logic. Why can't you write your oen logic in your own new class? what's the dependency of redefine an existing 3rd party class

manas · Answer

People u are not geting my point. I already have 2 3rd party dlls with class A & B and i want to impliment methods inside in in a single class or dll for my customer. How do i do it?

manas · Answer

Hi Sagar Class A and B are 3rd party DLLs. I cant modifye those. And my problem is i want to create a Dll for my customers which will have all the 3 methods. X()Y() and Z().

Sagar Kumar · Answer

Hi In C# multiple inheritance achived by Interfaces not by classes. but if u want to override the base class method in child class u can use polymorphism or if u want to change the signature of baseclass method in derived class(same name methods) use new keyword in derived class(i thing Shadowing). In both the cases it won't effect base class memders.