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Wanted & Available web Application

This is to simulate the real online business application. The application is aimed to link the sell side and buy side. Either buy side or sell side can post a listing. In the main page, all categorized goods are listed (Figure 1). The easiest way to implement such a page is to generate a function to create HTML code for a line.


Figure 1: The Link Page

If the user clicks on the “View Listings” link under a type of product, a new page will show up (Figure 2). This page displays all the listings corresponding to a product type. The data is displayed into a repeated pattern, but the pattern is not a real grid. So a function is defined to create HTML code for a whole listing, with the right side being created with a sub-function. The re-usable portion of a page, such as header, left or right browsing bar, footer, etc., can also be implemented by function calling. ASP .net also provides features of user control, which is more straight-forward for most cases.



Figure 2: The message page

If the user clicks the "Add Listings" link, the add listing page is launched (Figure 3). If the use has sufficient privilege through login, he is allowed to submit the listing, otherwise he is prompted to the registration page.

Validation controls of the ASP .Net was employed to ensure some required information is filled. A custom control was implemented to handle the case that max. length is reached.

The real strength for the .Net is that a fully object-oriented programming language is used to implement a web page, instead of a script language such as VB Script or Perl. .Net framework has over 7000 fully implemented classes available for the programming.

Figure 3: The add listing page

 

 

 


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Bingji (Benjamin) Li 2009. All rights reserved.