超级用户登录.frm

一个很有意思的点菜系统前后台连接齐全~做课程设计的同学可以参考

VERSION 5.00
Begin VB.Form superuserlogin 
   BorderStyle     =   3  'Fixed Dialog
   Caption         =   "超级用户登录"
   ClientHeight    =   1545
   ClientLeft      =   5355
   ClientTop       =   8010
   ClientWidth     =   3750
   Icon            =   "超级用户登录.frx":0000
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   912.837
   ScaleMode       =   0  'User
   ScaleWidth      =   3521.047
   ShowInTaskbar   =   0   'False
   Begin VB.TextBox txtUserName 
      Height          =   345
      Left            =   1290
      TabIndex        =   1
      Top             =   135
      Width           =   2325
   End
   Begin VB.CommandButton cmdOK 
      Caption         =   "确定"
      Default         =   -1  'True
      Height          =   390
      Left            =   480
      TabIndex        =   4
      Top             =   1020
      Width           =   1140
   End
   Begin VB.CommandButton cmdCancel 
      Cancel          =   -1  'True
      Caption         =   "取消"
      Height          =   390
      Left            =   2100
      TabIndex        =   5
      Top             =   1020
      Width           =   1140
   End
   Begin VB.TextBox txtPassword 
      Height          =   345
      IMEMode         =   3  'DISABLE
      Left            =   1290
      PasswordChar    =   "*"
      TabIndex        =   3
      Top             =   525
      Width           =   2325
   End
   Begin VB.Label lblLabels 
      Caption         =   "用户名称(&U):"
      Height          =   270
      Index           =   0
      Left            =   105
      TabIndex        =   0
      Top             =   150
      Width           =   1080
   End
   Begin VB.Label lblLabels 
      Caption         =   "密码(&P):"
      Height          =   270
      Index           =   1
      Left            =   105
      TabIndex        =   2
      Top             =   540
      Width           =   1080
   End
End
Attribute VB_Name = "superuserlogin"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False

Dim dcpath As String
Dim dcdb As Database
Dim superuser As Recordset
Public LoginSucceeded As Boolean

Private Sub cmdCancel_Click()
    '设置全局变量为 false
    '不提示失败的登录
    LoginSucceeded = False
    Unload Me
End Sub
Private Sub cmdOK_Click()
    '检查正确的密码
dcpath = "c:\点菜系统.mdb"
Set dcdb = OpenDatabase(dcpath)
Set superuser = dcdb.OpenRecordset("超级用户", dbOpenTable)

  
If txtUserName = "" Then
  MsgBox "输入用户名！"
  Exit Sub
End If
superuser.MoveFirst
While Not superuser.EOF
    If superuser.Fields(0) = "manager" Then
      If superuser.Fields(1) = txtPassword Then
        MsgBox "您是经理！"
        Form1.adduser.Enabled = True
        Form1.deleteuser.Enabled = True
        Form1.designmenu.Enabled = True
        Form1.managerpassword.Enabled = True
        Form1.designmenu.Enabled = True
        username = "manager"
        Unload superuserlogin
        Exit Sub
      End If
    ElseIf superuser.Fields(0) = txtUserName And superuser.Fields(1) = txtPassword Then
     dcdb.Close
     MsgBox "登陆成功！"
     Form1.userpassword.Enabled = True
     Form1.addmember.Enabled = True
     Form1.deletemember.Enabled = True
     Form1.designmenu.Enabled = True
     username = txtUserName
     Unload superuserlogin
     'form3.Show
     Exit Sub
    ElseIf superuser.Fields(0) = txtUserName And superuser.Fields(1) <> txtPassword Then
        MsgBox "无效的密码，请重试!", , "超级用户登录"
        dcdb.Close
        Exit Sub
    End If
superuser.MoveNext
Wend
MsgBox "对不起，您的权限不够！"
dcdb.Close
End Sub

Private Sub Form_Load()
Form1.Enabled = False
End Sub

Private Sub Form_Unload(Cancel As Integer)
Form1.Show
Form1.Enabled = True
End Sub