implement Composition & Inheritance in C# with Code with Classes - How to Inherit in C# with Classes

 How to Inherit in C# with Classes
http://www.saqibsomal.com/c-sharp/how-to-inherit-in-c-with-classes/16

implement Composition & Inheritance in C# with Code with Classes
http://www.saqibsomal.com/c-sharp/implement-composition-inheritance-in-c-with-code-with-classes/13