This is a question regarding inheritance

Question

Hi friends Good Day! I am a beginner and started reading c# just a few days ago. We can inherit base class members/methods using override for which we must have a virutal declaration in base class. If we want to inherit from a class which we have not created what do we do? because we don`t know whether the member has been declared virtual. Also give me some real time example of inheritance where you want to override a method which may not be declared as vitual. Thanks

Jignesh Trivedi · Answer

hi yes Shadowing is concept of VB.net but we can also use it in C#.net.

Suma M · Answer

Hi Jignesh Shadowing is in VB.NET right?

Jignesh Trivedi · Answer

hi In this you can use Shadowing. example public class A { public int ShadowTest(){ return 15;} public virtual int InhTest(){return 15;} } public class B : A{ public new int ShadowTest() { return 10;} //shadow public override int InhTest() {return 10;} //override } now when we call this method it retrun thire respective values. A clA = new A(); B clB = new B(); Console.WriteLine(clA.Foo()); // output 15 Console.WriteLine(clA.Bar()); // output 15 Console.WriteLine(clB.Foo()); // output 10 Console.WriteLine(clB.Bar()); // output 10 //now let's cast B to an A class Console.WriteLine(((A)clB).Foo()); // output 15 Console.WriteLine(((A)clB).Bar()); // output 10 hope this will help you.