ComboBox for ASP.NET Web Forms provides the following unique key features:

• Auto-searchable Drop-down list
  Locate items quickly by typing the first few characters. ComboBox will automatically search the list and select the items for you as you type.
• Load on Demand
  Populate items dynamically from the server using AJAX. This helps to keep page sizes small and manageable.
• Item Selection
  The C1ComboBox control provides single and multiple selection modes allowing end-users to select one or several items in the drop-down list.
• Resizable Drop-down List
  The C1ComboBox control provides single and multiple selection modes allowing end-users to select one or several items in the drop-down list.
• Theming
  With just a click of th e SmartTag, change the bar charts look by selecting one of the 5 premium themes (Midnight, Aristo, Rocket, Cobalt, and Sterling). Optionally, use ThemeRoller from jQuery UI to create a customized theme.
• CSS Support
  Use a cascading style sheet (CSS) style to define custom skins. CSS support allows you to match the accordion to your organization's standards.