Scott Mitchell post one more intresing article about building the dynamic user interfaces with ASP.NET AJAX. Here's the short list of topics disscussed in this article:

• Providing Visual Feedback During a Partial Page Postback

• Adding and Configuring an UpdateProgress Control

• A More "Real-World" Example of Using the UpdateProgress Control

• Looking Forward.

Source: 4Guys from Rolla.

Dave Ward write an article in whi he explains dangerous drawbacks inherent to UpdatePanel based navigation. He writes the followings:

«Perhaps due to its ubiquitous presence in web based email services, implementing asynchronous site navigation is frequently a design requirement when building AJAX based sites. Unfortunately, the also ubiquitous UpdatePanel is chosen to accomplish this far too often.

I’d like to take a moment to strongly recommend against doing that.

I’m going to explain what I believe are the three most dangerous drawbacks inherent to UpdatePanel based navigation: Performance degradation, usability concerns, and lack of maintainability.

Note: I would add SEO concerns to the list of drawbacks, but I’m going to assume that anyone who cares about SEO knows better than to use an UpdatePanel for content they wish to be indexed.»

You can read the full version of article on the Encosia site.

Bertran le Roy writes an intresting article about enhancing the UpdatePanel Ajax element. He writes:
"UpdatePanel is a great way to add Ajax features to an ASP.NET application at a minimal cost. Because it's based on regular postbacks, it also degrades gracefully when JavaScript is not present. But one thing it doesn't do well out of the box - and this is actually the case for any asynchronous update to the DOM - is informing screen readers that new content is present. This article and the accompanying code show how to work around that problem and give assistive technology users access to the benefits of Ajax. "

You can find the full version of this article and download the source code on the dotnetSlackers.com site.

There is a new tutorial about using the new controls for data paging in ASP.NET 3.5 posted on a 4 Guys From Rolla site. Here's the short list of topic covered in this tutorial:

• Paging Basics

• Default Paging vs. Custom Paging

• Creating the DataPager and Defining its DataPagerFields

• Creating a Custom Paging Interface with the TemplatedPagerField

There is an intrestIng article about uploading the large files on site with the ASP..NET in Jon Galloway blog. The author reviewed a lot of metyhods oof building such feature on a web site from a simplest solutions with a singles message to a beautiful RIA upload component. Also thereis a some information about how the IIS7 handle the file uploading. You can read the full version of this post in Jon Galloway Blog.

Last month we wrote about new project from the Microsoft Live Labs - Microsoft Volta.Microsoft Live Labs Volta is Microsoft's emerging toolset that enables developers to build multi-tier web applications by applying familiar .NET techniques and patterns. Tanzim Saqib has posted an article on DotNetSlackers site in which he telling about creating simple Volta control — a Flickr Widget.

The Custom Web-Parts is one of the most intresting ASP.NET features. You can learn the basics of this feature from the new article posted on the AjaxWorld Magazine. This article contains walk-through example of web application built with custom web- parts. Also there is a short review of various Microsoft technologies base on the web parts.

Source: AJAX World Magazine.

One of the most common problems in AJAX technology is a problem with browser history objectm Many AJAX libraries trying to solve.In the article posted by Dino Esposito on  dotnetslackers.com author describing one of the main feature of new ASP.NET Extensions 3.5 - the native support for history points and back/forward browser navigation.

Source: dotnetslackers.com

Scott Guthrie has posted the next article in th series about new MVC framework for ASP.NET. In this chapter he describes the routing architecture and show how to use it in web applications.

This article covers th following topics:

• What does the ASP.NET MVC URL Routing System do?

• Default ASP.NET MVC URL Routing Rules

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Scott Gu has posted very detailed tutorial Tip/Trick: Creating Packaged ASP.NET Setup Programs with VS 2005
With this article you can simply create setup project and deploy your application.

This includes the source to the server-side ASP.NET integration (including the UpdatePanel, UpdateProgress, and ScriptManager controls, as well as the source to the Network Serialization code).

The client-side ASP.NET AJAX JavaScript library (which we also call the "Microsoft AJAX Library") is being released under the Microsoft Permissive License (Ms-PL). This grants developers the right to freely customize/modify the library, as well as to redistribute the derivative versions of the JavaScript library for both commercial and non-commercial purposes.

ASP.NET AJAX 1.0

ASP.NET AJAX 1.0 delivers a rich client-side AJAX library that provides cross platform, cross browser support for a core JavaScript type-system, JSON-based network serialization stack, JavaScript component/control model, as well as common client JavaScript helper classes. ASP.NET AJAX also delivers a rich server-side library that integrates AJAX functionality within ASP.NET, and enables developers to easily AJAX-enable existing ASP.NET 2.0 sites with minimal effort.

ASP.NET AJAX is available for free, and can be used with ASP.NET 2.0 and VS 2005. It is a fully supported Microsoft product, and is backed by a standard 10 year Microsoft support license (with Microsoft Product Support available via phone 24 hours a day x 7 days a week).

ASP.NET AJAX Control Toolkit

In addition to the fully-supported ASP.NET AJAX 1.0 release, you can use the more than 30 free ASP.NET AJAX enabled controls available within the ASP.NET AJAX Control Toolkit. The control toolkit is a shared-source collaborative project built together by a team containing both Microsoft and non-Microsoft developers (visit the CodePlex Project to learn more, or volunteer to contribute). All source for the controls is provided completely for free (with full re-use and modification rights).

The majority of controls within the ASP.NET AJAX Control Toolkit leverage the "Control Extender" pattern that the core ASP.NET AJAX library introduces, and which delivers a super powerful way to easily enable specific AJAX scenarios on a site with minimal effort.

ASP.NET AJAX 1.0 Source Release

Earlier today the ASP.NET team shipped the release candidate for ASP.NET AJAX 1.0. This is the penultimate release of ASP.NET AJAX - the next public release will be the final, fully supported, 1.0 product.