unit1.~pas

来自「商品销售管理系统」· ~PAS 代码 · 共 79 行

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    GroupBox1: TGroupBox;
    Label1: TLabel;
    Label2: TLabel;
    Edit1: TEdit;
    Edit2: TEdit;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Label3: TLabel;
    ADOConnection1: TADOConnection;
    ADOTable1: TADOTable;
    ADOQuery1: TADOQuery;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

uses Unit2, Unit3;

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
   with ADOQuery1 do
  begin
    close;
    sql.clear;
    sql.add('select count(*) as cu from 登录表 where 用户名 = :用户名 and 密码 = :密码');
    parameters.ParamByName('用户名').value := edit1.text;
    parameters.ParamByName('密码').value := edit2.text;
    open;
    if fieldbyname('cu').asinteger = 0 then
    begin
     showmessage('请输入正确的用户名和密码！');
     end
    else
    begin
    showmessage('欢迎你使用本系统.软件设计者:倪朝贤 学号:020310518 时间:2004.11.7');
    edit1.Clear;
    edit2.Clear;
    form1.Hide;
    form3.show;
    
    end;
    end;
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
form1.Hide;
form2.show;
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
form1.Close;
end;

end.