Unit 'DB' Package
[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] [#fcl]

TFieldsEnumerator

[Properties (by Name)] [Methods (by Name)] [Events (by Name)]

Default enumerator for the fields collection of a dataset.

Declaration

Source position: db.pas line 1323

type TFieldsEnumerator = class

public

  constructor Create();

  

Create a new instance of TFieldsEnumerator.

  function MoveNext;

  

Move the current field to the next field in the collection.

  property Current: TField; [r]

  

Return the current field.

end;

Inheritance

TFieldsEnumerator

  

Default enumerator for the fields collection of a dataset.

|

TObject

Description

TFieldsEnumerator implements all the methods of IEnumerator so a TFields instance can be used in a for..in construct. TFieldsEnumerator returns all the fields in the TFields collection. Therefor the following construct is possible:

Var
  F : TField;

begin
   // ...
   or in MyDataset.Fields do
     begin
     // F is of type TField.
     end;
   // ...

Do not create an instance of TFieldsEnumerator manually. The compiler will do all that is needed when it encounters the for..in construct.

See also

TField

  

Provide access to the contents of a single field in a record.

TFields

  

Collection of #fcl.db.TField instances.

#rtl.system.IEnumerator


Documentation generated on: Oct 27 2024