Indicates whether the field has a value assigned to it.Delphi syntax:IsNull property (TField) property IsNull: Boolean;C++ syntax:__property bool IsNull = {read=GetIsNull, nodefault};DescriptionInspect 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.
property IsNull: Boolean;C++ syntax:__property bool IsNull = {read=GetIsNull, nodefault};DescriptionInspect 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.