Data.DB.TFieldDef.Required

• Up to Parent: TFieldDef

[–] Properties Type: property Visibility: public Source:

Data.DB.pas

Data.DB.hpp

Unit: Data.DB Parent: TFieldDef

Delphi

property Required: Boolean read GetRequired write SetRequired;

C++

__property bool Required = {read=GetRequired, write=SetRequired, nodefault};

Description

Indicates whether a value for the physical field in the underlying table is required.

Use Required to find out if a field in a dataset must have a value. If Required is true, the field must have a value. If Required is false, the field can be left blank.

When adding field definitions to a dataset, set Required to specify whether blank values for the new field should be prohibited.

See Also

• Required

Code Examples

• CreateTable (C++)