This document provides an overview of cookie and session management in ASP.NET. It discusses the differences between cookies, which are stored on the client-side, and sessions, which are stored on the server-side. Cookies can only store string data and have size and security limitations, while sessions can store any data type and provide more security since data is stored on the server. The document also provides examples of using cookies and sessions in ASP.NET applications and configuring session timeout values and cookie properties.

1. PRESENTATION
ON
COOKIE AND SESSION
MANAGEMENT IN ASP .NET
Submitted To: Rachana Kamaliya
Prepared By: Kumbhani Minaxi
Limbasiya Jignasha

2. INDEX
 Introduction
 Overview of Session
 Session – Property/Method
 Session - Example
 Session Configuration
 Advantages And Disadvantages Of Session
 Overview Of Cookie
 How cookies Started?
 Cookie - Property
 Cookie – Example
 Advantages And Disadvantages Of Cookie
 Differences Between Session & Cookie
 References
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Session & Cookie

3. BASIC ABOUT STATE MANAGEMENT
 ASP.NET framework provides various ways to preserve
the states at various stage.
 controlstate, viewstate, cookies, session, etc.
 These can be defined at the client side and server side
state management
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Session & Cookie

4. STATE MANAGEMENT
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Session & Cookie

5. OVERVIEW OF SESSION
 Session is server side object.
 It is saving your data for the
session you are using the site.
 There is a time for which this
objects stay in the memory.
 Session is defined in
Web.Config for session state
section otherwise 20 mins by
default.
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Fig : For every client session
data store separately
Session & Cookie

6. SESSION
 The Session is active:
 Till the user closes the browser or
 A certain period expires (20 minutes )
 Every session is identified by a unique SessionID
 Created at first entry in the site
 Transmitted in a cookie by default
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Session & Cookie

7. PROPERTY
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Property Description
Count Gives the number of session variables which
are in memory.
Session ID Give you unique SessionID,which is assign to
your session.
TimeOut Get or Set TimeOut period.
IsNewSession A Boolean value specifies whether session is
new or old one.
IsCookieLess A Boolean value specifies whether session is
Cookless or not.
Keys A collection of all keys
Session & Cookie

8. METHOD
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Method Description
Session.Remove
(StrSessionName)
Remove an Item from session state
collection.
Session.RemoveAll() Remove all Items from session collection.
Session.Clear() There is no difference between clear and
RemoveAll().RemoveAll() calls
Clear().internally.
Session & Cookie

9. SESSION - EXAMPLE
 Session Declaration:
 Session Retriving:
 Session Removing:
 To handle events fired when a session is started or
ended we use Session_OnStart and Session_OnEnd in
the Global.asax file
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Session["username"] = "pesho";
string = Session["username"].ToString();
Session.Remove(“username");
or
Session[“username"] = null;
Session & Cookie

10. SESSION CONFIGURATION
 We can configure various aspects of the session
mechanism
 Use the sessionState section in Web.config
 Example:
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<system.web>
<sessionState
cookieless="true" mode="InProc"
timeout="60" cookieName="MySite" />
</system.web>
 To deny/restrict access to the session
<%@ Page EnableSessionState="False"%>
<%@ Page EnableSessionState="ReadOnly" %>
Session & Cookie

11. ADVANTAGES & DISADVANTAGES
Advantages:
 Session provide us the way of maintain user data
to all over the application.
 session is that we can store any kind of object in it.
:eg, database, dataset.. Etc
 Session is secure and transparent from the user.
Disadvantages:
 Performance overhead in case of large volumes of
user, because session data is stored in server memory.
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Session & Cookie

12. OVERVIEW OF COOKIES
 Cookies are the small files that are created on the
client's system or client browser memory.
 We can store small pieces of information in a client
system and use it when needed.
 It works transparently with the user.
 It can be easily used anywhere in your web application
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Session & Cookie

13. HOW COOKIE STARTED?
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Session & Cookie

14. HOW COOKIE STARTED?(CONT..)
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Session & Cookie

15. PROPERTY
Property Description
Name Specify name of cookie
Value Contains value of cookie
Expires Get or Set expiration Date of cookie.
Expired Informs you whether cookie is expired or not.
Domain Specific domain can be specified,if cookie
store in specific folder.
Path Allows you to set or get path of cookie to be
store.
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Session & Cookie

16. COOKIE - EXAMPLE
 working with cookies, we need to use the namespace
System.web.
 Creating a cookie that will be sent to the client Web
browser:
 Reading a cookie received at the server:
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HttpCookie cookie = new HttpCookie
("UserName", "bajivan");
Response.Cookies.Add(cookie);
HttpCookie cookie = Request.Cookies["UserName"];
Session & Cookie

17. ADVANTAGES & DISADVANTAGES
Advantages:
 It's very simple to use and implement.
 Browser takes care of sending the data.
 For multiple sites with cookies, the browser automatically
arranges them.
Disadvantages:
 It stores data in simple text format, so it's not secure at
all.
 There is a size limit for cookies data (4KB). .
 Most browsers provide limits the number of cookies is
20.
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Session & Cookie

18. 1. Cookies can store only
"string" data type
2. They are stored at Client
side
3. Cookie is non-secure since
stored in text format at client
side
4. Only in few situations we
can use cookies because
of no security
1.Session can store any data
type
2. These are stored at Server
side
3. Session are secure because
it is stored in binary format
4. For all condition /situations
we can use sessions
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DIFF BETWEEN COOKIES & SESSION
Session & Cookie

19. REFERENCES
 http://www.codeproject.com
 http://en.wikipedia.org
 http://www.Tutorials.com
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Session & Cookie

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