unit10.pas

图书馆管理系统dephi版

unit Unit10;

interface

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

type
  Tpasswdchfrm = class(TForm)
    Label1: TLabel;
    Edit1: TEdit;
    Label2: TLabel;
    Edit2: TEdit;
    Label3: TLabel;
    Edit3: TEdit;
    Button1: TButton;
    Table1: TTable;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  passwdchfrm: Tpasswdchfrm;

implementation

{$R *.dfm}

procedure Tpasswdchfrm.Button1Click(Sender: TObject);
begin
if (edit2.text='') or(edit3.text='') then
                                  begin
                                  showmessage('密码不能为空');
                                  abort;
                                  end;
table1.Open;
table1.IndexFieldNames:='密码';
if(edit2.text<>edit3.text) then
                             begin
                             showmessage('请再确认一下你的密码');
                             abort;
                             end;
if  not table1.FindKey([edit1.Text]) then showmessage('密码错误，请重新输入')
                    else
                    begin
                    table1.Edit;
                    table1.FieldByName('密码').AsString:=edit2.Text;
                   table1.Append;
                    showmessage('修改成功');
                    edit1.Text:='';
                    edit2.Text:='';
                    edit3.Text:='';
                    end;


end;

procedure Tpasswdchfrm.Button2Click(Sender: TObject);
begin
edit1.Text:='';
edit2.text:='';
edit3.Text:='';
  passwdchfrm.Visible:=false;
end;

end.