Have you tried before to make arithmetic
operations on Objects, if you did sure the compiler Flashed an error but that
does not mean that we can't add object to another or subtract, that is
possible by overloading operators by user-defined class; that 's what I will
demonstrate right now :
Class Money :
using
System;
using
System.Collections.Generic;
using
System.Linq;
using
System.Text;
namespace
Object_A_plus_Object_B
{
class Money
{
private int
income = 0; //Field
private int
spent = 0;//Field
public string
getIncome
{
//proprety returning Income field vale
as a string
get { return
this.income.ToString(); }
}
public string
getSpent //proprety returning
Income field vale as a string
{
get { return
this.spent.ToString(); }
}
public Money(int
Income, int Spent)//Constructor
{
this.income = Income;
this.spent = Spent;
}
public static
Money operator
+(Money m1, Money
m2) //overloading + operator
and fdefine how the addition has to be done
{
return new
Money(m1.income + m2.income, m1.spent +
m2.spent);
}
}
}
Form 1 behind code
using
System;
using
System.Collections.Generic;
using
System.ComponentModel;
using
System.Data;
using
System.Drawing;
using
System.Linq;
using
System.Text;
using
System.Windows.Forms;
namespace
Object_A_plus_Object_B
{
public partial
class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void
Go_Click(object sender,
EventArgs e)
{
try
{
int objectAIncome =
Convert.ToInt16(a1.Text);
int objectASpent =
Convert.ToInt16(a2.Text);
int objectBIncome =
Convert.ToInt16(b1.Text);
int objectBSpent =
Convert.ToInt16(b2.Text);
Money ObjectA
= new Money(objectAIncome, objectASpent);
Money ObjectB
= new Money(objectBIncome, objectBSpent);
Money ObjectC
= ObjectA + ObjectB;
c1.Text =
ObjectC.getIncome;
c2.Text =
ObjectC.getSpent;
}
catch
(Exception ex)
{
MessageBox.Show("Error , Please enter int values !");
}
}
}
}
UI
![Image1.png]()
Let's explain the code :
- We created a Class called Money
- We defined how the addition of two
instantiated objects of Money class should be operated : object a + abject b
returns another object from the class Money Object C it's income field
=object A.income field + object B.income field and it's spent field =object
A.spent field + object B.spend field
To understand more download the source and
analyze it carefully , I tried to make it easy to get , leave a comment and
good luck