ASP.NET Application Development
In conventional ASP programming, developers typically access the Request object to get the parameters needed to render the page and render the content of the page through either the Response object or code rendering blocks. We also use other ASP objects such as the Application, Session, and Server objects to manage application variables, session variables, server settings, and so on.
As mentioned earlier, ASP.NET is intended to change all this spaghetti madness by introducing a much cleaner approach to server-side scripting framework: Web Forms, or programmable pages, and server controls.
In the following sections, we cover the components of a Web Form, its life cycles, the server controls that the Web Form contains, event handing for these server controls, as well as how to create your own server controls.
Web Form Components
to VB Forms, a Web Form consists of two
components: the form with its controls and the code behind it that
handles events associated with the form’s controls. A Web Form
has the file extension
and contains HTML
elements, as well as server controls. The code behind the form is
usually located in a separate class file. Note that while it is
possible to have both the form and the code in one file, it is better
to have separate files. This separation of user interface and
application code helps improve the spaghetti-code symptom that most
ASP-based applications are plagued with.
ASP.NET provides the Page class in ...