unit3.pas.~13~

《Delphi程序员成长攻略》-蒙祖强龚涛的源代码

unit Unit3;

interface

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

type
  TForm3 = class(TForm)
    DBGrid1: TDBGrid;
    DataSource1: TDataSource;
    Table1: TTable;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    procedure Button3Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form3: TForm3;

implementation

{$R *.dfm}

procedure TForm3.Button1Click(Sender: TObject);
begin
    table1.Delete;
end;

procedure TForm3.Button2Click(Sender: TObject);
begin

 if MessageDlg('确认要删除所有的记录吗?', mtWarning, [mbYes,mbNo],0)=mrYes then null;
    //while not table1.IsEmpty do  table1.delete;

end;

procedure TForm3.Button3Click(Sender: TObject);
begin
    close;
end;

end.