API:Data.DB.TBlobField.GetIsNull
Delphi
function GetIsNull: Boolean; override;
C++
virtual bool __fastcall GetIsNull();
Properties
Type | Visibility | Source | Unit | Parent |
---|---|---|---|---|
function | protected | Data.DB.pas Data.DB.hpp |
Data.DB | TBlobField |
Description
Returns whether the field has data or not.
Data.DB.TBlobField.GetIsNull inherits from Data.DB.TField.GetIsNull. All content below this line refers to Data.DB.TField.GetIsNull.
Returns whether the field has data or not.
The GetIsNull method returns whether the field has data or not. If the field has no data, GetIsNull returns True. Otherwise, GetIsNull returns False.