Data.DB.TField.IsNull
| [–] Properties | |
|---|---|
| Type: property | |
| Visibility: public | |
| Source: Data.DB.pas Data.DB.hpp
| |
| Unit: Data.DB | |
| Parent: TField | |
Delphi
property IsNull: Boolean read GetIsNull;
C++
__property bool IsNull = {read=GetIsNull, nodefault};
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.