fclientdemomain.pas

来自「就是这本书的随书代码。包括《实战Delphi 5.x-分布式多层应用系统篇》」· PAS 代码 · 共 63 行

unit fClientDemoMain;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls, Db, DBClient, Grids, DBGrids, ExtCtrls, DBCtrls, MConnect,
  FTClientDataSet;

type
  TForm2 = class(TForm)
    DataSource1: TDataSource;
    DBNavigator1: TDBNavigator;
    DBGrid1: TDBGrid;
    DBNavigator2: TDBNavigator;
    DBGrid2: TDBGrid;
    DataSource2: TDataSource;
    btnSave: TButton;
    btnLoad: TButton;
    DCOMConnection1: TDCOMConnection;
    btnApplyUpdates: TButton;
    FTClientDataSet1: TFTClientDataSet;
    FTClientDataSet2: TFTClientDataSet;
    procedure ClientDataSet1AfterPost(DataSet: TDataSet);
    procedure btnSaveClick(Sender: TObject);
    procedure btnLoadClick(Sender: TObject);
    procedure btnApplyUpdatesClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form2: TForm2;

implementation

{$R *.DFM}

procedure TForm2.ClientDataSet1AfterPost(DataSet: TDataSet);
begin
  FTClientDataSet2.Data := FTClientDataSet1.Delta;
end;

procedure TForm2.btnSaveClick(Sender: TObject);
begin
  FTClientDataSet1.SaveToFile('Sample.Dat');
end;

procedure TForm2.btnLoadClick(Sender: TObject);
begin
  FTClientDataSet1.LoadFromFile('Sample.Dat');
  FTClientDataSet2.Data := FTClientDataSet1.Delta;
end;

procedure TForm2.btnApplyUpdatesClick(Sender: TObject);
begin
  FTClientDataSet1.ApplyUpdates(0);
end;

end.