CODEWITHSUNDEEP
c#inheritance
Nikunj Vats
Nikunj Vats

Reputation: 33

How to not hide base class members while inheriting in c#

I am not getting the base class member in this code. Please suggest. I'm a rookie here

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace CaseStudy1
{  
    class base1
    {
        protected string name = "";
        public base1() {}
        public base1(string dad)
        {
            this.name = dad;
        }
    }

    class child1 : base1
    {
        private string name = "";

        public child1()
        {
            this.name = base.name;
        }

        public void show()
        {
            base1 b1 = new base1("Daddy");
            Console.WriteLine("base name"+base.name);
            Console.WriteLine("child's name" + name);            
        }

        public static void Main(string[] args)
        {
            child1 c1 = new child1();
            c1.show();
            Console.ReadLine();
        }
    }

Upvotes: 0

Views: 130

Answers (2)

Claies
Claies

Reputation: 22323

In C# Inheritance, what you have as a "child" class is not really a child (being owned by the base) but a more specific version of the base (as like a football being a specific kind of ball). The base class and the inherited class are the same actual object. Therefore, the new keyword is out of place, since what you want is the base class's name, not a new base object all together. By using the same name for a property in both the base and the inherited class, you are "hiding" the property in the base, since a single object can't have the same property twice (in your example, your object can't have 2 different name. If what you want to do is have the inherited class know the name of the base, they need to be different properties.

The best way to think of it is that if you use new to create an object, that object will have every property and method of itself and any class above it in the class tree, so a child1 object would have the child1 and the base1 properties and methods, but a new base1 object only has the base1 properties and methods.

As a side effect, a child1 object can be used in any statement that requires a base1 object, since a child1 object is a base1 object.

Upvotes: 2

Thilina H
Thilina H

Reputation: 5804

Here within the Show method you create the new instance of base1 class.So you cannot read from setted value from using base.name.because of b1 is new instance.

You can use as follows.

    class base1
    {
        protected string name { get; set; }
        public base1() { }
    }
    class child1 : base1
    {
        private string name = "";
        public void show()
        {
            base.name = "Daddy";
            this.name = base.name;
            Console.WriteLine("base name" + base.name);
            Console.WriteLine("child's name" + name);
        }
    }

Upvotes: 0

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