eXpress App Framework Team

This Blog

News

You are welcome to test the new XAF features prior to the 17.2 release: one, two, three, four, five, five

June 2009 - Posts

  • Sneak peek: navigation tree in XAF v2009 vol 2 (eXpressApp Framework)

    Another new feature in v2009 vol 2 of XAF. This is very early stuff, I hear the beta won't be along before the end of June.

    XAF now supports a tree view for navigation purposes, both in Windows Forms and ASP.NET. Of course this is very useful for applications that have a lot of different views. Here are some examples of navigation trees on both platforms - multiple levels, node images, ...

    In conjunction with the navigation bar, there are many different styles that can be configured for the visualization of navigation structures. The Navigation Demo that comes with XAF allows programmers to change options and see their immediate effects in the UI.

  • Sneak peek: collection validation in XAF v2009 vol 2 (eXpressApp Framework)

    Just a very quick look at a new feature in v2009 vol 2 of XAF. This is very early stuff, I hear the beta won't be along before the end of June.

    We have added the ability to apply rules to collection properties. For instance, in this screenshot you can see a rule failing that is defined to check against the sum of values over the collection. The values in the field "Sum between 0 and 50" are supposed to add up to 50 at most, but since the sum is actually 60, the rule triggers a validation error.

    Here's another example. In the "lowest" of the three stacked windows, you can see a collection of objects with a field called "Item Unique Value". The rule that is applied to the collection checks whether the field values are unique across the entire collection. When the detail view is brought up and the second item is edited to have the same value in that field as the first object, the rule triggers a validation error.

LIVE CHAT

Chat is one of the many ways you can contact members of the DevExpress Team.
We are available Monday-Friday between 7:30am and 4:30pm Pacific Time.

If you need additional product information, write to us at info@devexpress.com or call us at +1 (818) 844-3383

FOLLOW US

DevExpress engineers feature-complete Presentation Controls, IDE Productivity Tools, Business Application Frameworks, and Reporting Systems for Visual Studio, along with high-performance HTML JS Mobile Frameworks for developers targeting iOS, Android and Windows Phone. Whether using WPF, ASP.NET, WinForms, HTML5 or Windows 10, DevExpress tools help you build and deliver your best in the shortest time possible.

Copyright © 1998-2017 Developer Express Inc.
All trademarks or registered trademarks are property of their respective owners