unit8.~pas

来自「Delphi结合Access」· ~PAS 代码 · 共 59 行

unit Unit8;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs,Unit5, Grids, DBGrids, StdCtrls, ExtCtrls;

type
  TForm1 = class(TForm)
    Label1: TLabel;
    Edit1: TEdit;
    Button1: TButton;
    DBGrid1: TDBGrid;
    Panel1: TPanel;
    procedure Button1Click(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
  dm.ADOQuery2.Close;
  dm.ADOQuery2.SQL.Clear;
  dm.ADOQuery2.SQL.Add('select * from dangan');
  dm.ADOQuery2.SQL.Add('where 姓名 like'''+Edit1.Text+'%''');
  dm.ADOQuery2.Open;
  Panel1.Caption:='总共找到 ' + IntToStr(dm.ADOQuery2.RecordCount) + ' 条记录';
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  dm.ADOConnection1.Close;
  try
    dm.ADOConnection1.Open;
  except
    application.MessageBox('找不到数据库，引起该问题的原因是数据库文件可能被人为删除或改名。','无法打开数据库',0);
    application.Terminate;
  end;
end;

procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
  Action:= cafree;
end;

end.