Difference between abstract method and virtual method??

Difference between Virtual method and Abstract method

S.No	Virtual method	Abstract method
1	Overriding : Virtual method may or may not override by inherited class. i.e.,Virtual method provide the derived class with the option of overriding it. Virtual = = `Overridable`	Overriding : An abstract method should be overriden by inherited class. i.e.,Abstract method forces the derived class to override it. abstract == `MustOverride`
2	Implementation: Virtual method has an implementation.	Implementation: Abstract method does not provide an implementation.
3	Necessity to Implement: Virtual methods allow subclasses to provide their own implementation of that method using the override keyword	Necessity to Implement: Abstract methods in a class contain no method body, and are implicitly virtual
4	Scope : Virtual methods scope to members only.	Scope : Abstract method's scope to members and classes
5	Instancing : Virtual methods - Not applicable, as we can't create instance for members, it is possible only with classes.	Instancing : Abstract method - directly NO, but other way,Yes.We can create an instance of a class that derives from an abstract class. And we can declare a type Abstract class and instantiate that as a derived class.

Example:

public abstract class Test

{

public abstract void A(); // Abstract method

public virtual void B()

{

Console.WriteLine("Test.B"); } // Virtual Method

}

public class InheritedTest : Test

{

public override void A()

{

Console.WriteLine("InheritedTest.A");

}

//Method B implementation is optional

public override void B()

{

Console.WriteLine("InheritedTest.B");

}