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How to access a virtual method of the based class from the derived class where the method have been redefined ?
5 Antworten
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A Virtual method is a method that is declared as virtual in a base class.
Virtual method is that it can be redefined in one or more derived classes.
each derived class can have its own version of a virtual method.
You declare a method as virtual inside a base class by preceding its declaration with the keyword virtual.
When a virtual method is redefined by a derived class, the override modifier is used. The process of redefining a virtual method inside a derived class is called method overriding. When overriding a method, the name, return type, and signature of the overriding method must be the same as the virtual method that is being overridden. Also, a virtual method cannot be specified as static or abstract.
For Example:
//Demonstrate a virtual method.
using System;
class Base{
//Create virtual method in the base class.
public virtual void Who(){
Console.WriteLine("Who() in Base");
}
}
Class Derived1 : Base {
//Override Who() in a derived class.
public override void Who() {
Console.WriteLine("Who() in Derived1");
}
}
Class Derived2 : Base {
//Override Who() in another derived class.
public override void Who() {
Console.WriteLine("Who() in Derived2");
}
}
class OverrideDemo {
static void Main() {
Base baseOb = new Base();
Derived1 dOb1 = new Derived1();
Derived2 dOb2 = new Derived2();
}
}
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i think you use the override keyword when redefining the method in the inherited class
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didnt quite grasp your question but hope i helped anyway lol
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No, i meant to access a base method from a derived class object :s In java we would use super() for exemple to access the base class constructor, or ClassName :: Method() so I am wondering how to do it in C#. I hope my question is a bit clearer now !
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Keyword *base* is your friend.
The base keyword is used to refer to the base class when chaining constructors or when you want to access a member (method, property, anything) in the base class that has been overridden or hidden in the current class. ~ from stackoverflow.