Project Description
With thinktecture UIAnnotations you can extend your UI with additional functionality via Adorners and Behaviors. All parts are assignable via markup, which is helpful in MVVM scenarios and promotes the developer/designer interaction.
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TT.UIA for WPF
TT.UIA for Silverlight
With thinktecture UIAnnotations you can declarative attach visual Adorners and Expression Blend Behaviors to your user interfaces, including smart tags, editor toolbars and visual state markers for required fields, edit states and more. It also can automatically attach adorners to elements while reflecting the Data Annotations of the associated data sources. For a better MVVM support it offers a generic command behavior that is assignable to every event of a given element. thinktecture UIAnnotations is available for WPF and Silverlight.

thinktecture UIAnnotations in brief:
See Documentation for a detailed description.
Feel free to contact me via the forum when you have questions or found a bug.
For german guys: Read my blog posts about TT.UIA (http://headwriteline.blogspot.com/search/label/TT.UIA)
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