unit5.pas

毕业设计(带论文)—试卷生成系统,做的不错

unit Unit5;

interface

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

type
  Tchangemi = class(TForm)

    Image1: TImage;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Edit1: TEdit;
    Edit2: TEdit;
    Edit3: TEdit;
    BitBtn1: TBitBtn;
    BitBtn2: TBitBtn;
    Query2: TQuery;
    Query2ID: TStringField;
    Query2mi: TStringField;
    Query2qx: TStringField;
    procedure BitBtn1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  changemi: Tchangemi;

implementation

uses Unit1, Unit3,Unit4;

{$R *.dfm}

procedure Tchangemi.BitBtn1Click(Sender: TObject);
var
newmi:string;
begin

if edit1.text<>mainform.password then

showmessage('原密码不正确,不能修改密码!')
else

if (trim(edit2.text)='') or(trim(edit3.text)='') then
showmessage('新密码不能为空！')
else

if edit2.Text=edit3.Text then
begin
newmi:=edit2.text;
query2.Close;
Query2.RequestLive := true;
query2.SQL.Clear;
query2.SQL.text:='update u set mi='''+newmi+''' where ID='''+mainform.username+'''';
query2.ExecSQL;
//query2.open;
ShowMessage('密码修改成功!');
   changemi.Close;
// form3.Enabled:=true;
//edit1.Text:='';
//edit2.Text:='';
//edit3.Text:='';

end
else
begin
showMessage('新密码和确认密码不一致');
edit2.Clear;
edit3.Clear  ;
edit2.SetFocus;

end;
end;

end.