Virtual Keywords

Yes, an abstract method is also implicitly a virtual method even though it's a compile time error to use the 'virtual' keyword when declaring it.

Hi
  Virtual keyword:-
                   The virtual keyword allows polymorphism too. A virtual property or method has an implementation in the base class, and can be overriden in the derived classes.

To create a virtual member in C#, use the virtual keyword:

public virtual void Draw()