unit5.~pas

一个可以用于书店的图书信息管理系统

unit Unit5;

interface

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

type
  TForm5 = class(TForm)
    Image1: TImage;
    Edit1: TEdit;
    Edit2: TEdit;
    ADOQuery1: TADOQuery;
    Label2: TLabel;
    Label3: TLabel;
    Edit3: TEdit;
    DBGrid1: TDBGrid;
    DataSource1: TDataSource;
    DBEdit1: TDBEdit;
    DBEdit2: TDBEdit;
    DBEdit3: TDBEdit;
    DBEdit4: TDBEdit;
    DBEdit5: TDBEdit;
    DBEdit6: TDBEdit;
    DBEdit7: TDBEdit;
    DBEdit8: TDBEdit;
    Label4: TLabel;
    Label5: TLabel;
    Label6: TLabel;
    Label7: TLabel;
    Label8: TLabel;
    Label9: TLabel;
    Label10: TLabel;
    Label11: TLabel;
    Label12: TLabel;
    DBEdit9: TDBEdit;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    CheckBox1: TCheckBox;
    Label1: TLabel;
    procedure Button1Click(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form5: TForm5;

implementation

uses Unit2;

{$R *.dfm}

procedure TForm5.Button1Click(Sender: TObject);
Var S_sql:string;
begin
  adoquery1.Close;
  adoquery1.SQL.Clear;
  S_sql:='select * from 读者信息 where 1=1';

  if edit1.Text<>''then   begin
  if checkbox1.Checked then
  S_sql:=S_sql+'and 读者编号 like ''%'+edit1.text+'%'''
  else
  S_sql:=S_sql+'and 读者编号='''+edit1.text+'''';
   end;
  if edit2.Text<>'' then  begin
  if checkbox1.Checked then
  S_sql:=S_sql+'and 读者名称 like ''%'+edit1.Text+'%'''
  else
  S_sql:=S_sql+'and 读者名称 ='''+edit1.Text+'''';
  end;
   if edit3.Text<>'' then    begin
  if checkbox1.Checked then
  S_sql:=S_sql+'and 系别 like ''%'+edit1.Text+'%'''
  else
  S_sql:=S_sql+'and 系别 ='''+edit1.Text+'''';
  end;
  adoquery1.sql.add(S_sql);
  adoquery1.open;
  edit1.text:='';
  edit2.text:='';
  edit3.text:='';
end;

procedure TForm5.FormCreate(Sender: TObject);
begin
adoquery1.Close;
end;

procedure TForm5.Button2Click(Sender: TObject);
begin
if messagebox(0,'确实要删除该学生记录吗?','图书管理系统-提示信息',mb_okcancel+mb_iconquestion+mb_defbutton2)=Idok then
adoquery1.Delete;
end;

procedure TForm5.Button3Click(Sender: TObject);
begin
adoquery1.post;
showmessage('新信息保存成功！');
end;

procedure TForm5.Button4Click(Sender: TObject);
begin
form5.close;
form2.show;
end;

end.