Operator Overloading in C Sharp

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Written By:-Isha Malhotra

Email:-malhotra.isha3388@gmail.com

Operator Overloading

Before understanding the operator overloading we need to understand why we use operator overloading. In the following example we have one class calculator which contains two variable x and y. and one web form where we create two variables in its cs file and add them.

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

public partial class _Default : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {

        int p = 10;

        int q = 20;

        int r = p + q;

    }

}

 In this operation we didn’t get any problem but if we try to add two objects we will get error like this:-

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

public partial class _Default : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {

        Calculator cal1 = new Calculator();

        cal1.x = 10;

        cal1.y = 20;

        Calculator cal2 = new Calculator();

        cal2.x = 15;

        cal2.y = 25;

        //we will get error that we cannot use + operator of type Calculator(which is ref type)

        Calculator cal = cal1 + cal2;

    }

}