unit MainForm;

interface

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

type
  TForm1 = class(TForm)
    SocketConnection1: TSocketConnection;
    cdsContacts: TClientDataSet;
    dsContacts: TDataSource;
    DBGrid1: TDBGrid;
    procedure cdsContactsAfterGetRecords(Sender: TObject;
      var OwnerData: OleVariant);
    procedure cdsContactsBeforeGetRecords(Sender: TObject;
      var OwnerData: OleVariant);
    procedure FormCreate(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.cdsContactsAfterGetRecords(Sender: TObject;
  var OwnerData: OleVariant);
begin
  cdsContacts.Tag := OwnerData;
end;

procedure TForm1.cdsContactsBeforeGetRecords(Sender: TObject;
  var OwnerData: OleVariant);
begin
  if cdsContacts.Active then
    OwnerData := cdsContacts.Tag;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  cdsContacts.Open;
end;

end.