Building a Web 2.0 Portal with ASP NET 3.5 by Omar AL Zabir

By Omar AL Zabir

Internet 2.0 entrepreneur and Microsoft MVP Omar Zabir exhibits ASP.NET 2.0 builders tips on how to construct a innovative internet portal utilizing ASP.NET, the Microsoft AJAX Framework, Silverlight, and .NET 3.5.First identify to teach ASP.NET builders the right way to enforce net 2.0 rules and practices, utilizing post-ASP.NET 2.0 applied sciences, together with ASP.NET AJAX, .NET 3.5 and Silverlight: Many skilled ASP.NET 2.0 builders are below expanding strain from buyers and consumers to supply them with the performance and consumer event discovered at Ajax-enabled websites similar to PageFlakes, Google commence and others. Programming net 2.0 with ASP.NET AJAX and .NET 3.0 assumes readers have mastered the center performance of ASP.NET 2.0 and are searhing for the recent talents they should take their websites to the subsequent point. more recent applied sciences coated by means of the booklet comprise ASP.NET AJAX, .NET 3.5, Silverlight, LINQ and more.Written through Pageflakes co-founder and Microsoft MVP Omar AL Zabir: Omar AL Zabir is co-founder of PageFlakes (http://www.pageflakes.com/ ), an award-winning begin web page. He continues a well-liked weblog on Microsoft applied sciences (http://msmvps.com/blogs/omar/) and often contributes articles to (see The Code undertaking ).Includes a whole internet 2.0 software outfitted utilizing Microsoft applied sciences and services:Building an internet 2.0 Portal comprises code for a whole pattern program that demonstrates how ASP.NET AJAX, .NET 3.5 and different applied sciences from Microsoft and 3rd events can be utilized to construct a state-of-the-art purchaser dealing with or firm portal. Code might be on hand at no cost obtain from the ebook website and from a domain maintained through the writer.

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The actual widget hosted inside the container is loaded inside an UpdatePanel control. So, no matter how many times the actual widget performs a postback, the widget container does not perform a postback. Designing the Widget Container Designing a good widget container is a matter of finding the right combination of UpdatePanels. NET controls inside an UpdatePanel. Putting the whole widget container inside one UpdatePanel works well enough, and there is only one UpdatePanel per widget container, so the overhead is small.

NET. But for the widgets that are loading for the first time on the new tab, it’s not a postback for them. They will fail when trying to read data from ViewState because no ViewState exists for them yet. NET postback concept for the widgets. NET postback with our own definition of postback for Widgets. Maximizing the First-Visit Experience The most challenging part of a web portal is the first-visit experience. On first visit, a new user gets a page that is set up with predefined widgets that are ready for further customization (see Figure 2-13).

The browser takes about 200 to 400 ms to reach the server and come back to the browser to download a file. So, each script file can waste 200 to 400 ms, and if there are five scripts, then the application spends one second on each network roundtrip. Now, add the total download time for the files, and it could easily take 10 seconds for 5 large scripts. So, you need to seriously think about (and test) how to optimize script file size and reduce network roundtrips as much as possible. Ideally, you should try to deliver only one large JavaScript file that combines all the smaller JavaScript files that are essential for the web portal to be fully functional on first visit.

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