This is a commercial (non-free) product that users can download and use for free for 45 days in trial mode.
Xceed Ultimate ListBox for WPF takes the streamlined, uncluttered experience of the listbox to new heights in responsiveness, appeal, and functionality: truly, it’s a listbox for the 21st century. And because its core API is the same as the standard WPF listbox’s, you’ll already know how to use it and be up and running in no time.
Xceed's WPF listbox is powered by a background, remote data retrieval engine that only gets records currently visible in the viewport (data virtualization), or those immediately preceding or following the current ones (active/passive pre-fetching) so they are ready when the end-user scrolls. This greatly reduces the amount of data transferred, making remote data access feel fast like no other listbox can do. Background (asynchronous) retrieval keeps the UI responsive, always. What's more, it does everything automatically!
Powerful grouping with sticky header support helps make data easy to handle, and an innovative group navigation control that provides previous/next group commands and index entry buttons lets end-users go quickly to the item they're looking for. A search box further assists end-users by giving them access to the filtering capabilities you define. And fluid smooth scrolling and insert/delete animations, which increase perceived performance by masking network lag when the listbox is waiting for slow data sources, help you create an incredible UI experience.
Xceed Ultimate ListBox for WPF also supports multiple views (a traditional vertical-scrolling list, as well as a horizontal version, and "path" views, which let you place items along any geometric path in the viewport, for example, creating a carousel view). Eight beautiful themes let the listbox match the style of your application, whatever it may be. And the listbox provides fully configurable drag-and-drop operations.
Designed from the ground up for WPF, Xceed Ultimate ListBox for WPF uses the same ground-breaking data retrieval engine as Xceed DataGrid for Silverlight, which provides automatic data virtualization with WCF Data Services / OData.
The product comes with full documentation that fully integrates into Visual Studio for quick access. It also provides C# and VB.NET sample applications that make getting started with it easy.
Xceed Ultimate ListBox for WPF is available through a subscription that delivers much more than a perpetual license for versions received during the subscription. The subscription also provides an entire year of these great services: expert, priority support and access to new versions, new features, and bug fixes. Additional years can be added at a discounted price at the time of purchase or before the subscription expires; a new subscription is required after it has expired. Choosing the Blueprint subscription adds the full C# and XAML source.
Xceed's products can be tried out with a fully functional 45-day trial and come with a 60-day money-back guarantee.