The COMBOBOX component is some normal combo box, which allows a selection of one value out of many.

The COMBOBOX has two important attributes: the VALUE is the property on server side which represents the selected value. The VALIDVALUESBINDING is the binding to a property of class "ValidValuesBinding", which on server side provides the valid values that are shown in the combo box.

Please pay attention: all server side values are sent to the client side COMBOBOX so that the user can quickly select. Do not use the COMBOBOX for 100s of values, both for usability and for data volume reasons!