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Best Cloud ASP.NET Hosting :: Introduction Cookies in ASP.NET

Best Cloud ASP.NET Hosting :: Introduction Cookies in ASP.NET

BestCloudHostingASP.NET | Best and Affordable ASP.NET Hosting. Hello guys today I will explain Cookies in ASP.NET.

What’s Cookies ?

ASPNET-COOKIE_230x221A cookie is a piece of information in the form of a very small text file placed on an internet user’s hard drive. It is generated by a web page server that is basically the computer that operates a web site. The user can also change the cookie before the browser sends it to you. So never store a password, username, email, pan number in cookies. We can declare at least 300 cookies per website and at least 4096 bytes per cookie.

Now the question is, how to declare a Cookie.

1st way

   HttpCookie Cookies1 = new HttpCookie("Cookies1");  
   Cookies1.Value = txt1.Text;  
   Response.Cookies.Add(Cookies1);

 2nd way

Response.Cookies["Cookies1"].Value = txt1.Text;

3rd way

We can write multiple values in each cookie.

    Response.Cookies["Cookies"]["Name"] = txt1.Text;  
    Response.Cookies["Cookies"]["class"] = txt2.Text; Response.Cookies["Cookies"]["sec"] = txt3.Text;  
    Response.Cookies["Cookies"]["Roll"] = txt4.Text;

How we access cookies

The following describes how to access cookies.
For 1st way and 2nd way we use:

String cooks=Request.Cookies[“Cookies”].Value;

 And the 3rd way for multiple values in a single cookie:

 String name=Request.Cookies["Cookies"]["Name"];  
 String class=Request.Cookies["Cookies"]["class"];  
 String sec=Request.Cookies["Cookies"]["sec"];  
 Int roll= String name=Request.Cookies["Cookies"]["roll"];

 Now how to Delete a Cookie

Click to Claim

Response.Cookies["Cookies1"].Expires = DateTime.Now.AddHours(-1);

Just provide a negative value for the time you add when declaring a Cookie.
I will describe with code:
First we create a page called CreateCookie.aspx as in the following:

 <%@ Page Language="C#" AutoEventWireup="true" CodeFile="CreateCookies.aspx.cs" Inherits="CreateCookies" %>  
      
    <!DOCTYPE html>  
      
    <html xmlns="http://www.w3.org/1999/xhtml">  
    <head runat="server">  
        <title></title>  
    </head>  
    <body>  
        <form id="form1" runat="server">  
        <div>  
        <b>Pleas enter your Name:</b>  
        <br /><br />  
            <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>  
        <br /><br />  
            <asp:Button ID="Button1" runat="server" Text="Submit" onclick="Button1_Click1"/>  
      
        </div>  
        </form>  
    </body>  
    </html>

 CreateCookie.aspx.cs

    using System;  
    using System.Collections.Generic;  
    using System.Web;  
    using System.Web.UI;  
    using System.Web.UI.WebControls;  
    using System.Threading;  
      
    public partial class CreateCookies : System.Web.UI.Page  
    {  
        protected void Page_Load(object sender, EventArgs e)  
        {  
      
        }  
      
      
        protected void Button1_Click1(object sender, EventArgs e)  
        {  
      
            //First Way  
            HttpCookie Cookies1 = new HttpCookie("Cookies1");  
            Cookies1.Value = TextBox1.Text;  
            Cookies1.Expires = DateTime.Now.AddHours(1);  
            Response.Cookies.Add(Cookies1);  
      
      
              
          //  Second Way  
            Response.Cookies["Cookies2"].Value = TextBox1.Text;  
            Response.Cookies["Cookies2"].Expires = DateTime.Now.AddHours(1);  
              
      
              
          //  Multiple values in single cookie  
            Response.Cookies["Cookies3"]["name"] = "AAFIA";  
            Response.Cookies["Cookies3"]["class"] = "class-ix";  
            Response.Cookies["Cookies3"]["sec"] = "A";  
            Response.Cookies["Cookies3"]["roll"] = "4";  
              
            Response.Cookies["Cookies3"].Expires = DateTime.Now.AddDays(1);  
              
      
            Response.Redirect("ResultCookis.aspx");  
        }  
    }  

 Now we access cookies on another page called ResultCookie.aspx as in the following:

  <%@ Page Language="C#" AutoEventWireup="true" CodeFile="ResultCookis.aspx.cs" Inherits="ResultCookis" %>  
      
    <!DOCTYPE html>  
      
    <html xmlns="http://www.w3.org/1999/xhtml">  
    <head runat="server">  
        <title></title>  
    </head>  
    <body>  
        <form id="form1" runat="server">  
       <div>  
            <b>Now See Cookies Data Here: </b>  
            <br /><br />  
           first way <br />  
           <asp:Label ID="Label1" runat="server" Text=""></asp:Label>  <br />     
           second way <br />  
           <asp:Label ID="Label2" runat="server" Text=""></asp:Label>  <br />  
           multiple Value in  single Cookies <br />  
           <asp:Label ID="Label3" runat="server" Text=""></asp:Label>          
           <asp:Label ID="Label4" runat="server" Text=""></asp:Label>       
           <asp:Label ID="Label5" runat="server" Text=""></asp:Label>       
           <asp:Label ID="Label6" runat="server" Text=""></asp:Label>       
           <asp:Label ID="Label7" runat="server" Text=""></asp:Label>   
        </div>  
        <br /><br />  
        <asp:Button ID="Button1" runat="server" Text="Delete All Cookies"   
            onclick="Button1_Click" />  
        <br /><br />  
        </form>  
    </body>  
    </html>

 ResultCookie.aspx.cs

    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 ResultCookis : System.Web.UI.Page  
    {  
        protected void Page_Load(object sender, EventArgs e)  
        {  
            if (Request.Cookies["Cookies1"] != null)  
            {  
      
                string txtbox = Request.Cookies["Cookies1"].Value; //For First Way  
                Label1.Text = txtbox.ToString();  
      
                //for 2nd Cookie  
      
                string txtbox2 = Request.Cookies["Cookies2"].Value;  
                Label2.Text = txtbox2.ToString();  
                  
                //For Multiple values in single cookie  
      
      
                Label3.Text = Request.Cookies["Cookies3"]["name"];  
                Label4.Text = Request.Cookies["Cookies3"]["class"];  
                Label5.Text = Request.Cookies["Cookies3"]["sec"];  
                Label6.Text = Request.Cookies["Cookies3"]["roll"];  
      
            }  
            else  
            {  
                string msg = "No Cookies";  
                Label7.Text = msg;  
            }  
        }  
      
        protected void Button1_Click(object sender, EventArgs e)  
        {  
            if (Request.Cookies["Cookies1"] != null)  
            {  
                Response.Cookies["Cookies1"].Expires = DateTime.Now.AddHours(-1);  
                
            }  
            if (Request.Cookies["Cookies2"] != null)  
            {  
                Response.Cookies["Cookies2"].Expires = DateTime.Now.AddHours(-1);  
                
            }  
            if (Request.Cookies["Cookies3"] != null)  
            {  
                Response.Cookies["Cookies3"].Expires = DateTime.Now.AddDays(-1);  
                
            }  
            Response.Redirect("ResultCookis.aspx");  //to refresh the page  
        }  
    }  

 Happy Coding 🙂

Ayla Sevim

Hi, I'm Ayla Sevim and I'm professional freelance specializing in writer, web developer, design, programming web applications. If you any ideas or request, please get @ me - [email protected]

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