Inmemory Cookies, Persistant Cookies in Asp.Net
Cookies:
1)website storing a variable with in client system is called “cooki variable”
2)cookies can be used to maintain user information across different webpages with in website by storing with in client system
3)the advantage with cookies is reducing memory burden on webserver system by storing variables with in client system
Cookies can be classified into 2 types
1.inmemory cookie
2.persistant cookie
Inmemory cookie:
Cookie variable stored with in browser process memory is called “inmemory cookie”.
Inmemory cookie is a temporary cookie closing browser will erase cookie variables.
Creating cookie variable:
Response.cookies[“varname”].value=”…”;
->cookie variable can store only string type data
->cookie variable can store maximum of 4kb data
Reading cookie variable:
Reading cookie is possible based on name (or) index
EX:Request.cookies[“varname”].value
(or)
Request.cookies[index].value
Creating online examination website using inmemory cookie concept
Goto visual studio
Start->run->devenv
It will display main window of visual studio
File menu->new->website->visual c#->select asp.net empty website
Weblocation->e:\aspnet\onlineexamsite[drive:\dir\websitename]
Visual studio create a folder with website name, in this folder website related files will be placed
Add webform
Goto view menu and select solution explorer
Right click on website path and select add new item
Select webform
Give name as question1.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="question1.aspx.cs" Inherits="question1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/html1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
</div>
</form>
</body>
</html>
Goto go to design part
What is CLR[label1]
Common language runtime
Common language resource
|
next |
Radiobutton1 properties
Id-r1
Groupname-g1
Radiobutton2 properties
Id-r2
Groupname-g1
//next button click logic
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class question1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
if (r1.Checked)
Response.Cookies["q1"].Value = "y";
else
Response.Cookies["q2"].Value = "n";
Server.Transfer("question2.aspx");
}
}
Add webform
Goto view menu and select solution explorer
Right click on website path and select add new item
Select webform
Give name as question2.aspx
Goto design part
What is CTS[label1]
Common transper system
Common type system
|
next |
Radiobutton1 properties
Id-r1
Groupname-g1
Radiobutton2 properties
Id-r2
Groupname-g1
//next button click logic
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class question2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
if (r2.Checked)
Response.Cookies["q2"].Value = "y";
else
Response.Cookies["q2"].Value = "n";
Server.Transfer("question3.aspx");
}
}
Add webform
Goto view menu and select solution explorer
Right click on website path and select add new item
Select webform
Give name as question3.aspx
What is GAC[label1]
Global assembly cache
Global assembly center
|
ok |
Radiobutton1 properties
Id-r1
Groupname-g1
Radiobutton2 properties
Id-r2
Groupname-g1
//ok button click logic
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class question3 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
if (r1.Checked)
Response.Cookies["q3"].Value = "y";
else
Response.Cookies["q3"].Value = "n";
Button1.Visible = false;
HyperLink1.Visible = true;
}
}
Add webform
Goto view menu and select solution explorer
Right click on website path and select add new item
Select webform
Give name as result.aspx
Place label control
//page load event logic
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class result : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
string s = "";
string v = "";
int count = 0;
for (byte i = 0; i < Request.Cookies.Count; i++)
{
v = Request.Cookies[i].Value;
s = s + "q1" + (i + 1) + "." + v + "<br>";
if (v == "y")
count = count + 1;
}
Label1.Text = "result sheet <br>" + s + "total correct:" + count;
}
}
set start page as question1.aspx
goto contrl F5
Note:
browser submitted cookie variables will be stored with in request object
Persistant cookie:
->Storing cookie variable with in textfile at client system is called “persistant cookie”
->persistant cookie will be maintained with in client system based on particular lifetime
->creating persistant cookie
Response.cookies[“varname”].value=”..”;
Response.cookies[“varname”].expires=datetime.now.adddays(2);
->datetime.now returns current system date and time
->adddays method can be used to add number of days to system date
->similarly u can go with addminutes, add hours, add years….
