can we use virtual keyword in abstract class

Question

Surya Kant · Answer

Yes you can use virtual keyword inside a abstract class. Because abstract class contain both abstract member and non-abstract member; so when you defining any method using virtual kwyword it means you are giving permission to child class that you can redefine the method in child class when you don't like the behaviour of parent method; so you can use freely any where virtual keyword inside the project as your requirement; see the bellow eg:- //Parentclass. abstract class TestDemo { public abstract void Show(); //Abstractmethod public virtual void Display() //VirtualMethod. { Console.WriteLine( "TestDemoDisplayIsCalled!!!" ); } } Now Implimenting TestDemo in it's child class:- //Childclass. class ImplimentTestDemo:TestDemo { public override void Show() { Console.WriteLine( "ImplimentTestDemoShowmethodiscalled!!!" ); } public override void Display() { base .Display(); //It will call the Parent class Display() Console.WriteLine( "ImplimentTestDemoIsCalled!!!" ); } public static void Main() { ImplimentTestDemoobjITD= new ImplimentTestDemo(); objITD.Display(); ///VirtualMehtodCalledusingChildclassobject objITD.Show(); //Abstractshowmethodiscalledusingchildcalssobject Console.ReadLine(); } } Thanks; Regards: SK.

Ramesh Palaniappan · Answer

Yes, you can use it. T he virtual keyword is used to modify a method, property, indexer, or event declaration and allow for it to be overridden in a derived class.

Munesh Sharma · Answer

https://www.dotnetperls.com/virtual

Esakki Muthu · Answer

Hi Mari, public abstract class Abstract { public virtual string testing() { return string.Empty; } }

Tejas Trivedi · Answer

Hi Mari, Yes, you can have virtual keyword for methods, properties class members for abstract class in c# Hope, this will answer your query. Please feel free to write me if you need more information on this. Please don't forget to mark as answer if this help.

Akash Varshney · Answer

you can have it as as concrete method not as a contract . 1. Virtual used for overriding purpose . while abstract is used for abstraction layer . 2. while you write your code you will get error if you use both at same time "must precede with member type of name.

can we use virtual keyword in abstract class

Answers (6)