unit9.~pas

一个可以用于书店的图书信息管理系统

unit Unit9;

interface

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

type
  TForm9 = class(TForm)
    Image1: TImage;
    ADOQuery1: TADOQuery;
    DataSource1: TDataSource;
    Label1: TLabel;
    Edit1: TEdit;
    Button1: TButton;
    Button2: TButton;
    DBGrid1: TDBGrid;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form9: TForm9;

implementation

uses Unit2;

{$R *.dfm}

procedure TForm9.Button1Click(Sender: TObject);
Var
S_sql:string;
begin
adoquery1.Close;
adoquery1.SQL.Clear;
 S_sql:='select 读者姓名,书目编号,图书名称,作者,出版社,价格,入库时间 from 读者借书信息 where 读者编号='''+edit1.text+'''';
  adoquery1.SQL.Add(S_sql);
  adoquery1.Open;
  if adoquery1.RecordCount=0 then
   application.MessageBox('没有该学生的信息，或者你的输入有误！','提示信息',mb_ok);
   edit1.text:='';
end;

procedure TForm9.Button2Click(Sender: TObject);
begin
form9.Close;
form2.show;
end;

end.