Asp.net session fundamental

Ø Server-side programming is writing a code that can run on the server, using languages supported by the server, it is possible to write code that executes on the server-side in JavaScript).

Ø Client-side programming is writing code that will run on the client, and is done in languages that can be executed by the browser, such as JavaScript.

§ viewstate,cookies,querystring and session called state managements , the following details

about their:

• The ViewState property provides a dictionary object for retaining values between multiple requests for the same page. This is the default method that the page uses to preserve page and control property values between round trips.

• A cookie is a small amount of data that is stored either in a text file on the client file system or in-memory in the client browser session. It contains site-specific information that the server sends to the client along with page output. Cookies can be temporary (with specific expiration times and dates) or persistent.

• A query string is information that is appended to the end of a page URL. A typical query string might look like the following example:

http://www.test.com/test.aspx?category=basic&price=100

In the URL path above, the query string starts with a question mark (?) and includes two attribute/value pairs, one called "category" and the other called "price."

• ASP.NET allows you to save values by using session state — which is an instance of the HttpSessionState class , for each active Web-application session.

For an overview, Session state is similar to application state, except that it is scoped to the current browser session. If different users are using your application, each user session will have a different session state. In addition, if a user leaves your application and then returns later, the second user session will have a different session state from the first.