Private Constructor In C#

Private Constructor :

There are following important points about private constructor

A ) Private constructor can not be inherited

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

namespace WebApplication1

{

    public partial class WebForm1 : System.Web.UI.Page

    {

        protected void Page_Load(object sender, EventArgs e)

        {

        }

    }

    public class myClass

    {

        private myClass()

        {

        }

       

    }

    public class myClass1:myClass

    {

        private myClass1()

        {

        }

    }

}

Out Put:

Severity	Code	Description	Project	File	Line
Error	CS0122	'myClass.myClass()' is inaccessible due to its protection level	WebApplication1	D:\SandeepAllPractise\WebApplication1\WebApplication1\WebForm1.aspx.cs	26

B )  we can not create a object of the class which has private constructor

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

namespace WebApplication1

{

    public partial class WebForm1 : System.Web.UI.Page

    {

        protected void Page_Load(object sender, EventArgs e)

        {

            // myClass obj = new myClass();

            string str = myClass.myData();

        }

    }

    public class myClass

    {

        private myClass()

        {

        }

        public static string myData()

        {

            return "HI";

        }

    }

    public class myClass1:myClass

    {

        private myClass1()

        {

        }

    }

}

* Some times we do not want to create instances of certain classes

 like utility,common routine classes.