Introduction - If you have any usage issues, please Google them yourself
The custom control inherited from TCustomEdit, characterized by an increase of NameDataField property, and the DataField property of the original form a pair. By setting ShowIdText, ShowNameText and NameDataField properties, the control gets focus, the display DataField value, leaving the focus show NameDataField value. Such a control displays the contents of two fields can be effective in reducing the number of interface controls, make the interface cleaner. For example: display supplier ID and supplier Name, then the DataField is set to SupplierId, NameDataField set SupplierName, property to True and then set the ShowNameText