eStream PanelBar.NET is a flexible, affordable and easy to integrate component for building expandable/collapsible menu systems.

eStream PanelBar.NET allows developers to create powerful and attractive menus for their web sites or web applications in just a few lines of code. The product offers out of the box support for XP styled and Outlook styled navigations.

The ASP.NET menu control was developed specifically for ASP.NET.

-- Written with C# --
Leverages .NET's managed execution (memory management, automatic garbage collection and type-safety). Supports viewstate, postbacks and other .NET extras.

-- Flexible Programming Options --
Program the objects in VS.NET designer, any available .NET language, or load state using XML file.

-- Expand/Collapse --
Different types of Expand/Collapse behaviors are available. You can have a single click expand one group and collapse another (only one group is expanded at a time), or each group can behave independantly (multiple groups expanded).

-- Highly Customizable Look --
Colors, sizes, borders and fonts can all be customized to visually integrate with any project. Also supports custom image replacement throughout. Appearance customization can be accomplished with or without CSS.

-- Sizing Options --
Specify fixed dimensions, dynamically resize (percentage based) or let a Group size to it's own content.

-- Animation and Float --
Many expand effects: Barn, Pixelate, Fade, Iris, GradientWipe, Zigzag and more.

-- Client-side Events --
In addition to navigating to a URL, you can invoke custom JavaScript functions at the browser when the user clicks on Items.

And many more!