unit2.pas

图书管理系统 简介 随着科学技术的飞速发展

unit Unit2;

interface

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

type
  Tadminfrm = class(TForm)
    GroupBox2: TGroupBox;
    BitBtn3: TBitBtn;
    BitBtn4: TBitBtn;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    Button5: TButton;
    Button6: TButton;
    Button7: TButton;
    DBGrid1: TDBGrid;
    DBGrid2: TDBGrid;
    Edit1: TEdit;
    ComboBox1: TComboBox;
    Edit2: TEdit;
    combobox2: TComboBox;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Label4: TLabel;
    Button8: TButton;
    Table1: TTable;
    DataSource1: TDataSource;
    Table2: TTable;
    DataSource2: TDataSource;
    procedure BitBtn3Click(Sender: TObject);
    procedure BitBtn4Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
    procedure Button8Click(Sender: TObject);
    procedure Button6Click(Sender: TObject);
    procedure combobox2Change(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure ComboBox1Change(Sender: TObject);
    procedure Button7Click(Sender: TObject);
    procedure Button5Click(Sender: TObject);
   
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  adminfrm: Tadminfrm;

implementation

uses Unit3, Unit4, Unit5, Unit6, Unit7, Unit9, Unit10, Unit8;

{$R *.dfm}



procedure Tadminfrm.BitBtn3Click(Sender: TObject);
begin
   addreaderfrm.show;
end;

procedure Tadminfrm.BitBtn4Click(Sender: TObject);
begin
table2.Open;
if messagedlg('是否要删除?',mtinformation,[mbyes,mbok],0)=mryes then   table2.Delete;

end;

procedure Tadminfrm.Button1Click(Sender: TObject);
begin
modifyreaderfrm.show;
end;

procedure Tadminfrm.Button2Click(Sender: TObject);
begin
newbookfrm.show;
end;

procedure Tadminfrm.Button4Click(Sender: TObject);
begin
    lenbookfrm.show;
end;

procedure Tadminfrm.Button8Click(Sender: TObject);
begin
lenbookfrm.show;
end;

procedure Tadminfrm.Button6Click(Sender: TObject);
begin
passwdchfrm.show;
end;

procedure Tadminfrm.combobox2Change(Sender: TObject);
begin
table1.IndexFieldNames:=combobox2.Text;
if not table1.findkey([edit2.Text]) then
                              showmessage('没有相关关键字的图书');

end;

procedure Tadminfrm.Button3Click(Sender: TObject);
begin
 if messagedlg('确定要删除此类图书吗？',mtinformation,[mbyes,mbno],0)=mryes then
     table1.Delete;
end;

procedure Tadminfrm.ComboBox1Change(Sender: TObject);
begin

table2.IndexFieldNames:=combobox1.Text;
if not table2.FindKey([edit1.Text]) then showmessage('没有这个记录！')


end;

procedure Tadminfrm.Button7Click(Sender: TObject);
begin
    if messagedlg('确定要退出吗?',mtinformation,[mbyes,mbno],0)=mryes then  adminfrm.Visible:=false;
end;

procedure Tadminfrm.Button5Click(Sender: TObject);
begin
     form8.show;
end;

end.