[NumLock]

пример создания и использования "временного TDataSet" на основе TClientDataSet:

Код:

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, DB, DBClient, Grids, DBGrids;

type
  TForm1 = class(TForm)
    DBGrid1: TDBGrid;
    DataSource1: TDataSource;
    ClientDataSet1: TClientDataSet;
    procedure FormCreate(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
begin
  ClientDataSet1.FieldDefs.Add('id', ftInteger);
  ClientDataSet1.FieldDefs.Add('nick', ftString, 20);
  ClientDataSet1.FieldDefs.Add('note', ftString, 40);
  ClientDataSet1.CreateDataSet;
end;

end.

http://data.cod.ru/77821