The Menu for ASP.NET Web Forms Edition controls have a very rich client-side object model since most of their members are identical to the members in the server-side control.

When aC1Menu control is rendered, an instance of the client-side control will be created automatically. This means that you can enjoy the convenience of accessing the properties and methods  of the C1Menu controls without having to postback to the server.

Using client-side code, you can implement many features in your Web page without the need to send informaion to the Web server, which takes time. Using the client-side object model increases the efficiency of your Web site.