unit1.pas

商场客户管理系统： 该系统为数据库上机实验操作。 主要是针对数据库查询

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Label1: TLabel;
    Image1: TImage;
    Label2: TLabel;
    Edit1: TEdit;
    Label3: TLabel;
    Edit2: TEdit;
    Button1: TButton;
    Button2: TButton;
    ADOQuery1: TADOQuery;
    ADOConnection1: TADOConnection;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

uses Unit6;

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
      if(Edit1.Text='')then
         showmessage('帐户不能够为空，请重新输入！')
       else
          begin
             if(Edit2.Text='')then
                Showmessage('密码不能够为空，请重新输入！')
              else
                  begin
                     adoquery1.Close;
                     adoquery1.SQL.Clear;
                     Adoquery1.SQL.Add('select * from oprator where oprator_no='''+Edit1.Text+'''and oprator_mima='''+Edit2.Text+'''');
                     Adoquery1.Open;
                     if adoquery1.RecordCount=0 then
                        showmessage('输入的帐户或密码有错请重新输入！')
                     else
                        begin
                           form6.Show;
                        end;
                  end;
          end;
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
Messagedlg('确定退出系统吗？',mtError,[mbok],0);
form1.Close;
end;

end.