Similar to the Heading control, but shows a checkbox next to the title. When the checkbox is unchecked all other input controls inside the heading's box are hidden and will be sent to the insert update procedure as NULL.
In this example, "Car info" is the heading with checkbox, with three textboxes inside it.
By clearing the checkbox, the three textboxes are hidden from view and their content will not be sent to the server.
Retrieves the default value for the control.
This call is only made if there is a field validation set for the field info and the field has any content.
Performs field validation when the user leaves the field or one of its dependencies is changed, initial values set by default value and initial values in edit-mode are not validated.
When saving the validation runs server side if the field value has changed. A field value is considered changed if in new mode the value is anything other than
NULL. In edit mode it is considered changed if it has a value that was not returned by the GetEditFields procedure.