What use is a hidden field in a Server Behavior you might ask? The use is limited to a Server Behavior that you will be hand-coding. The hidden field allows you to do a few different things that a plain text field won't allow:

• Passing values from a tabbed interface to a "central" hidden field
• Passing a value from a listbox or other unsupported control to allow them to be used easily from a Server Behavior built with the Builder
• Storing the "real" value when a user might type in a plain English value.

This article shows one possible use of the control.

You can download this control from here:

download Hidden Field