Answer / sridevi

declare method1 as virtual in classA and then create classB
as derived class of ClassA and override method1 in classB.

class ClassA{
public virtual add();

}

class ClassB:ClassA{
public overrride add(){

console.WriteLine("Im in derived");

}

}

Answer / ch.venu

Ans:
we can override the parent class method under its child
class only when the parent class declared the method as
virtual

ex:
class Parent
{
public virtual void Test()
}
now thar virtual method of the parent class can be override
the child class using override modifier

ex:

class child:Parent
{
public override void Test()
{
Console.WriteLine("hi this is derived class") ;
}
}

but it is only optional for the child classs to override the
virtual method of its parent class

Answer / ashwini c havan

we can override the parent class method under its child
class only when the parent class declared the method as
virtual and abstract..............

Answer / avaneesh bajoria

If using VB.NET as the code behind, you use must override
instead of virtual and overrides in the derived classs

public class parent

public mustoverride sub walk()
messagebox.show("Parent")
end sub
end class

public class child
inherits parend

public overrides sub walk()
messagebox.show("Child")
end sub

end class

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