How I Can Call Multiple Constructors By Making A Single Object

Today, I am going to show you how we can call multiple constructors by making a single object in Main class.

INTRODUCTION

Today, I am going to show you how we can call multiple constructors by making a single object in the Main class.

Explanation

My motive to write this code is that I want to show you that how we can call multiple constructors by a single object.

Step 1

In all statements, start with using namespaces, as that is required to implement our code. 

Step 2

Then, I used class A, and a public modifier for it,

• First, I will pass default constructor for class A that will automatically be called while our object is created.
• Then I will make another constructor having some parameters, [you may pass any parameter]
• In the second, third, and fourth constructor I will pass int parameters. 
• In the second one, I will pass two parameters, because we cannot pass the same parameter or the same datatype parameter without using overriding.
• In this program, I will use ''OVERLOADING"

OVERLOADING: HAVING THE SAME NAME BUT DIFFERENT PARAMETERS.

Step 4

I will use new class B, which only has a single constructor.

Step 5

At last, in the main class, I will create an object of class B.

Step 6

You must be thinking that's why I used this keyword with all constructors.

Step 7

Through this keyword we can call a constructor. 

Step 8

Use Breakpoint on every constructor, so that you will find how the code is working.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Interfaces {
    public class a {
        public a(): this(2, 2) {
            Console.WriteLine("call 2 parameter method");
        }
        public a(int a, int b): this(2, 2, 2, 2, 2) {
            Console.WriteLine("call 4 parameter method");
        }
        public a(int a, int b, int c, int d): this(2, 2) {
            Console.WriteLine("call 5 parameter method");
        }
        public a(int a, int b, int c, int d, int e) {
            Console.WriteLine("4 parameter");
        }
        public a(string ABC): this() {
            Console.WriteLine("string parameter");
        }
    }
    public class b: a {
        public b() {
            Console.WriteLine("b parametre");
        }
    }
    class main {
        public static void Main() {
            b obj = new b();
        }
    }
}