Result.aspx.cs

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using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Web.Configuration;
using System.Data.SqlClient;

public partial class Result : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Request.Cookies["StudentCookies"] != null)
        {

            string roll = Request.Cookies["StudentCookies"].Value; //For First Way
            //string roll = Request.Cookies["StudentCookies"].Value;  //For Second Way

            /*
            //For Multiple values in single cookie
            string roll;
            roll = Request.Cookies["StudentCookies"]["RollNumber"];
            roll = roll + " " + Request.Cookies["StudentCookies"]["FirstName"];
            roll = roll + " " + Request.Cookies["StudentCookies"]["MiddleName"];
            roll = roll + " " + Request.Cookies["StudentCookies"]["LastName"];
            roll = roll + " " + Request.Cookies["StudentCookies"]["TotalMarks"];
             * 
             * */
            Label1.Text = roll;

        }
        else
        {
            string msg = "No Cookies";
            Label1.Text = msg;
        }
    }

    protected void Button1_Click(object sender, EventArgs e)
    {
        if (Request.Cookies["StudentCookies"] != null)
        {
            Response.Cookies["StudentCookies"].Expires = DateTime.Now.AddDays(-1);
            Response.Redirect("Result.aspx");  //to refresh the page
        }
    }
}