• This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn more.

Overriding??


#1
What's Overriding for .NET? I am begginer and trying to learn .Net and yesterday someone asked me this question. What is this? Any answers will be appreciated. Thanks in advance!!
 
#3
overriding is the one of the feature of the OOPS(object oriented programming) . here we explain the overriding
Here:In the example, the class A is the base class. It has the virtual method Y.
Virtual
And:In class B, we override Y. In class C, we implement Y but do not specify that it overrides the base method.
Class

Program that uses override modifier: C#

using System;

class A
{
public virtual void Y()
{
// Used when C is referenced through A.
Console.WriteLine("A.Y");
}
}

class B : A
{
public override void Y()
{
// Used when B is referenced through A.
Console.WriteLine("B.Y");
}
}

class C : A
{
public void Y() // Can be "new public void Y()"
{
// Not used when C is referenced through A.
Console.WriteLine("C.Y");
}
}

class Program
{
static void Main()
{
// Reference B through A.
A ab = new B();
ab.Y();

// Reference C through A.
A ac = new C();
ac.Y();
}
}

Result

B.Y
A.Y

In this example, the A type is used to reference the B and C types. When the A type references a B instance, the Y override from B is used. But when the A type references a C instance, the Y method from the base class A is used.
Note:The override modifier was not used.
The C.Y method is local to the C type.
Warning:In the above program, the C type generatesa warning because C.Y hides A.Y. Your program is confusing and could be fixed.
Tip:If you want C.Y to really "hide" A.Y, you can use the new modifier, as in "new public void Y()" in the declaration.