Telerik RadComboBox for ASP.NET AJAX is a flexible drop-down control for ASP.NET applications. RadComboBox introduces a number of advanced features, including:
A client-side API that includes the ability to add, delete and update RadComboBox items and allow the changes to persist server-side.
Flexible binding mechanism, including
Load-on-demand support for faster performance when the combobox has many items.
Powerful auto-complete functionality with multi-item auto-complete.
Fast client-side filtering.
Sorting of items.
Support for column headers and multiple columns.
End-user restriction policies.
Customizable appearance through skins. RadComboBox can be styled to a detailed level including the drop-down list elements, drop down button, and text entry areas.
Customizable items, including the ability to assign tooltips to items and apply CSS styles to individual items.
Content template support.
Support for custom attributes.
Animation for the appearance of the drop-down list.
Support for right-to-left locales.
Integration with ASP.NET validation support.
Keyboard support for easy navigation.
Server-side events for customizing behavior.
Overlay support. RadComboBox can display its drop-down list over IE windowed objects such HTML select boxes, Flash movies, and so on. This built-in feature does not need to be set explicitly through a property.
Screen boundary detection. The drop-down expands to the opposite direction when necessary to prevent screen boundaries from being crossed.
Cross-page postbacks, which let you direct postbacks from the combobox to a different Web page.
Simple rendering saves HTML output.
Support for all major browsers, including Internet Explorer 5.0 and above, Netscape 6.0 and above (PC and Mac), Mozilla 0.6 and above (PC and Mac), Firefox 0.9 and above (PC and Mac), Opera 7 and above, and Safari 1.2 and above.