📄 unit2.pas
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unit Unit2;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, DB, ADODB;
type
TForm2 = class(TForm)
Label1: TLabel;
Edit1: TEdit;
Label2: TLabel;
Edit2: TEdit;
Button1: TButton;
Button2: TButton;
ADOQuery1: TADOQuery;
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form2: TForm2;
var1,var2:STRING;
implementation
uses unit3;
{$R *.dfm}
procedure TForm2.Button1Click(Sender: TObject);
begin
var1:=Edit1.Text;
var2:=Edit2.Text;
if(var1='')and (var2='')then
ShowMessage('请输入用户名和密码')
else if(var1<>'')and(var2='')then
ShowMessage('请输入密码')
else if(var1='')and(var2='')then
ShowMessage('请输入用户名')
else if(var1='qqq')and(var2='qqq')then
begin
ShowMessage('登陆成功');
form3.Show;
end
else
ShowMessage('对不起,您无权访问');
end;
procedure TForm2.Button2Click(Sender: TObject);
begin
close;
end;
end.
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