ASP.NET State management

 Introduction of State Management

 Types of State Management
 Client Side Techniques
 Server Side Techniques

 Client Side State Management
 (Introduction and Ways)

 Server Side State Management
 (Introduction and Ways)

 Http is a stateless protocol.
 Web Server does not have any idea about the
requests.
 Example – Online Registration Form

 Client Side State Management
 Utilizes Clients Resources
 Ways : View state, Hidden fields, Query string, Cookies

 Server Side State Management
 Utilizes Server Resources
 Ways : Session State, Application State.

Client Side State Management
 View State –
 It stores information submitted through form and works
between requests of the same page.
 The values written in the server control is passed as a
variable to an HTML hidden input field.

Advantages
1. No Server resources required.
2. Simple Implementation

Disadvantages
1. Performance Consideration
2. Potential Security risks

 Hidden Fields –
 Can be used to store page specific information
 Can be used to store small amount of data

Advantages
1. No Server resources are required
2. Widespread Support

Disadvantages
1. Performance Considerations
2. Potential Security (If Page O/P Source is viewed)

 Query String –
 A String which is appended to the end of the page URL.
 Can be used to send small amount of data and if security
is not a concern
 Can be used to pass small amount of data from 1 page to
another.

Advantages
1. No Server side resources used.
2. Simple implementation

Disadvantages
1. Limited Capacity
2. Potential Security risk

 Cookies –
 It is useful to store small amount of data on the Client
side.
 It can be temporary(with specific expiration time and
date).

Advantages
1. Configurable Expiration Rules
2. No Server Resources required
3. Simplicity

Disadvantages
1. Size limitations
2. User-configured refusal
3. Less Secured

Server Side State Management
 Session State –
 Stored in the Server’s memory and value can be accessed
across page requests.
 3 different modes of storing the Sessions.
 InProc
 State Server
 SQL Server
 Off

 Advantages
 Cookieless Support
 Data Persistence

 Disadvantages
 Performance Consideration

 Application State
 It is used to store global application specific information
 Automatically created when a first request is made to a
web application
 Storing application state in the Server’s memory is better
than storing the information in the database

Advantages
1. Application Scope

Disadvantages
1. Requires Server resources
2. Limited Durability of data (Server Crash or Shutdown)

ASP.NET State management

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