connection1.pas

《delphi数据库设计与实例开发》随书光盘

unit Connection1;

interface

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

type
  TForm1 = class(TForm)
    Table1: TTable;
    Database1: TDatabase;
    DBGrid1: TDBGrid;
    DataSource1: TDataSource;
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}


procedure TForm1.Button1Click(Sender: TObject);
begin
 try
  DataBase1.Open;
  Table1.Active:=true;
  ShowMessage('连接成功！');
 Except
  On E:EdatabaseError do
  ShowMessage(E.Message);
 end;
end;



procedure TForm1.Button2Click(Sender: TObject);

begin
 try
  DataBase1.Close;
  ShowMessage('断开连接！');
 Except
  On E:EdatabaseError do
  ShowMessage(E.Message);
 end;
end;

end.