unit1.pas

《Delphi7编程100例》代码,书配资料

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    DBGrid1: TDBGrid;
    DataSource1: TDataSource;
    ClientDataSet1: TClientDataSet;
    DCOMConnection1: TDCOMConnection;
    Button4: TButton;
    OpenDialog1: TOpenDialog;
    SaveDialog1: TSaveDialog;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
    procedure ClientDataSet1ReconcileError(DataSet: TCustomClientDataSet;
      E: EReconcileError; UpdateKind: TUpdateKind;
      var Action: TReconcileAction);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}
uses Unit2;
procedure TForm1.Button1Click(Sender: TObject);
begin
  ClientDataSet1.Close;
  ClientDataSet1.Open;
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  if Savedialog1.Execute then
    ClientDataSet1.SaveToFile(SaveDialog1.FileName);
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
  if OpenDialog1.Execute then
    ClientDataSet1.LoadFromFile(OpenDialog1.FileName);
end;

procedure TForm1.Button4Click(Sender: TObject);
begin
  ClientDataSet1.ApplyUpdates(-1);
end;

procedure TForm1.ClientDataSet1ReconcileError(
  DataSet: TCustomClientDataSet; E: EReconcileError;
  UpdateKind: TUpdateKind; var Action: TReconcileAction);
begin
  Action:=HandleReconcileError(DataSet,UpdateKind,E);
end;

end.