Assigning the designer to the date picker control
To assign the multi view designer to the date picker control you must add the following attribute to the DatePickerField class definition:
[ControlDesigner(typeof(DatePickerFieldDesigner))]
The DatePickerField class looks like this:
[ControlDesigner(typeof(DatePickerFieldDesigner))]
[DatabaseMapping(UserFriendlyDataType.Date)]
public class DatePickerField : FieldControl, IFormFieldControl
{
...
}
After you create the date picker control and the multi view designer for it, you must register the control in Sitefinity backend. For more information, see Registering the date picker control.