Data-aware controls rely on the Text property to provide the editing format for each field. For example, by default the Text property of a currency field omits the thousands separators and currency symbol. 

Text can differ from the DisplayText property if the field uses a different string representation when the value is being edited. To implement two different string representations of a field's value, use the OnGetText event handler. If an OnGetText event handler is assigned, Text is the value returned in the Text parameter of the event handler when the DisplayText parameter is false. If there is no OnGetText event handler, Text is the value of the AsString property. 

AsString 

DisplayText 

OnGetText 

Value