Data.DB.TField.IsNull
Delphi
property IsNull: Boolean read GetIsNull;
C++
__property bool IsNull = {read=GetIsNull, nodefault};
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| property | public | Data.DB.pas Data.DB.hpp |
Data.DB | TField |
Description
Indicates whether the field has a value assigned to it.
Inspect IsNull to ascertain whether the field contains a value. If IsNull is true, the field is blank. If IsNull is false, the field has a value.