demo.~pas

《Delphi 7数据库应用技术与实例》源代码__客户端数据集更新实例.ra《Delphi 7数据库应用技术与实例》源代码__客户端数据集更新实例.ra

unit demo;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, DBXpress, FMTBcd, DBClient, Provider, DB, SqlExpr, StdCtrls,
  Buttons, ExtCtrls, DBCtrls, Grids, DBGrids;

type
  TForm1 = class(TForm)
    DBGrid1: TDBGrid;
    DBNavigator1: TDBNavigator;
    DataSource1: TDataSource;
    BitBtn1: TBitBtn;
    BitBtn2: TBitBtn;
    BitBtn3: TBitBtn;
    SQLConnection1: TSQLConnection;
    SQLDataSet1: TSQLDataSet;
    DataSetProvider1: TDataSetProvider;
    ClientDataSet1: TClientDataSet;
    procedure BitBtn3Click(Sender: TObject);
    procedure BitBtn1Click(Sender: TObject);
    procedure BitBtn2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.BitBtn3Click(Sender: TObject);
begin
    close;
end;

procedure TForm1.BitBtn1Click(Sender: TObject);
begin
    clientdataset1.ApplyUpdates(-1); 
end;

procedure TForm1.BitBtn2Click(Sender: TObject);
begin
  clientdataset1.CancelUpdates; 
end;

end.