Asp.Net is a technology used to build server side interactive, dynamic web pages.The Asp.net is a framework built on the Common Language Runtime(CLR).

Standard Namespaces

1. System - Contains all the base classes eg Random number, Date and Time.


2. System.Collection - Contains classes such as Hash Table, Array Lists.


3. System.Configuration - Contains classes for working with Configuration files.


4. System.Text - Contains classes for Encoding, Decordig, manipulating Strings.


5. System.Web - Contains classes to work with www, server response and browser request.


6. System.Web.Caching - Contains classes for caching web pages, User controls and Data caching.


7. System.Web.Security - To Implement authentication and authorization.


8. System.Web.SessionState - Contain classes for implementation session state.


9. System.Web.UI - Basic classes in building the user interface of Asp.Net pages.


10. System.Web.UI.HTMLControls - Contains the Classes for the HTML Controls.


11. System.Web.UI.WebControls - Contains the Classes for the Web Controls.

Controls in Asp.Net :

1. Standard HTML Controls - All the html form controls are the standard control in the ASP.net for example:-

<input name="username" type="text" size="30">

2. Asp.Net HTML Controls :-The Asp.net controls are the controls which can run on server. The standard controls can be converted to smart Asp.net specific control by adding two attributes i.e "id" and "runat="server". For example:-

<input name="username" type="text" size="30" id ="control1" runat="server">

3. Web Controls - The Web controls are divided into five different groups.

1. Basic Web Controls - Button, Checkboxes, CheckBoxList, DropDownList etc.


2. Validation Web Controls - CompareValidator, CustomValidator, RangeValidator, RegularExpressionValidator, RequiredFieldValidator, Validation Summary


3. Data Controls - DataGrid , DataList, Repeater,


4. Rich Web Controls


5. Mobile Controls

Benefits of Asp.Net Controls:

The folllowing are the benefits of Asp.net.

1. An Intuitive Object Model


2. View State : The Difference b/w the simple HTML control and Asp.Net Control is that the Asp.Net control retains the values that are put into it after the post to the server.


3. This will provide cleanly separation b/w the design content of the page from the logic part.


4. Enable you to maintain browser compatibility and still support browse features such as JavaScript.