C1ComboBox client side has a very rich client-side object model since most of its members are identical to the members in the server-side control.

When a C1ComboBox control is rendered, an instance of the client-side combobox will be created automatically. This means that you can enjoy the convenience of accessing properties and methods of the C1ComboBox control without having to postback to the server.

Using C1ComboBox/s client-side code, you can implement many features in your Web page without the need to send information to the Web server which takes time. Thus, using C1CombBox's client-side object model can increase the efficiency of your Web site.