TField.Required property
Does the field require a value.
Declaration
property Required: Boolean read FRequired write FRequired default False;Description
Required determines whether the field needs a value when posting the data: when a dataset posts the changed made to a record
(new or existing), it will check whether all fields with the
Required property have a value assigned to them. If not, an
exception will be raised. Descendents of
TDataset will set the property to
True when opening the dataset,
depending on whether the field is required in the underlying data engine. For fields that are not required by the database engine,
the programmer can still set the property to
True if the business logic requires a field.See also
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.