C # Virtual methods

• The base class method must be defined as virtual.

• If a method in a derived class does not have a new or override keyword in front of it, the compiler will issue a warning that the method will perform the action as if it were a new keyword.

• If a method in a derived class is preceded by a new keyword, the method is defined as independent of the method in the base class.

• If a method in a derived class is preceded by a override keyword, the object of the derived class will call the method instead of calling the base class method.

• You can call a base class method from a derived class by using a base keyword.

• override, virtual and new keywords can also be used in properties, indexers, and events.

  namespacevirtual Method { Public classClass1 { Public Virtual voidSay () {Console.WriteLine ("Hello world!"); }    }     Public classClass2:class1 { Public Override voidSay () {Base.            Say (); Console.WriteLine ("Hello, world! "); }    }    classProgram {Static voidMain (string[] args) {Class2 C2=Newvirtual methods. Class2 (); C2.        Say (); }    }}

C # Virtual methods