In this article we've developed a simple article-related wiki application using an ASP.NET AJAX client-centric framework. As hinted at the beginning of this article, there are rather more difficulties in constructing an MS AJAX client-centric application than the server-centric ones-on the one hand, the MS AJAX client-centric architecture has not been fully fledged; on the other hand, practical web applications usually bring forth new and complex business requirements which require the developers take the reins firmly and freely with many respects that are relevant to the web applications.

I've brought this tutorial to you only with the aim that you can balance every technique you know to decide whether to select the server-centric programming mode or the client-centric one in building your next web 2.0 applications.

By the way, as just a demo, the application in this article has only brought you the basic routine in constructing a Microsoft AJAX client-centric application. The following points remain to be improved or added:

• Substituting the current page switching solution with more fluid and user-friendly ones.
  
• Finding new ways of dynamically updating the client-side article content after new users add new comments/posts to it.
  
• Adding more convenient article editing function support.
  
• Replacing the current TEXT-format based editing in authoring a new article with the real scenario online HTML-based editing support and therefore storing the HTML content instead of the XML content.
  
• Further optimizing the speed of displaying UI elements since the xml-script resolution greatly tampers with this display speed.
  
• Using the client-side Validator controls to validate the article title and content.
  
• Adding RSS support as achieved by many modern web applications

Happy ajaxifying your web applications!