frmlogin.frm

实现学生成绩管理一个很好的vb实例可用作课程设计

VERSION 5.00
Begin VB.Form frmLogin 
   BorderStyle     =   3  'Fixed Dialog
   Caption         =   "登录"
   ClientHeight    =   1305
   ClientLeft      =   2835
   ClientTop       =   3480
   ClientWidth     =   3750
   Icon            =   "frmLogin.frx":0000
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   771.037
   ScaleMode       =   0  'User
   ScaleWidth      =   3521.047
   ShowInTaskbar   =   0   'False
   StartUpPosition =   2  '屏幕中心
   Begin VB.CommandButton cmdOK 
      Caption         =   "确定"
      Default         =   -1  'True
      Height          =   390
      Left            =   480
      TabIndex        =   2
      Top             =   720
      Width           =   1140
   End
   Begin VB.CommandButton cmdCancel 
      Cancel          =   -1  'True
      Caption         =   "退出"
      Height          =   390
      Left            =   2100
      TabIndex        =   3
      Top             =   720
      Width           =   1140
   End
   Begin VB.TextBox txtPassword 
      Height          =   345
      IMEMode         =   3  'DISABLE
      Left            =   1320
      PasswordChar    =   "*"
      TabIndex        =   1
      Top             =   165
      Width           =   2325
   End
   Begin VB.Label lblLabels 
      Caption         =   "数据库密码:"
      Height          =   270
      Index           =   1
      Left            =   105
      TabIndex        =   0
      Top             =   240
      Width           =   1080
   End
End
Attribute VB_Name = "frmLogin"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Private Sub cmdCancel_Click()
    Unload Me
End Sub

Private Sub cmdOK_Click()
    '检查正确的密码
    On Error GoTo l1
    Set db = OpenDatabase(App.Path & "\scores.mdb", True, False, ";pwd=" & Trim(txtPassword)) '打开数据库
    '如果密码正确
    strPassword = Trim(txtPassword)   '记住当前密码
    Load frmMain
    frmMain.Show
    Unload Me
    Exit Sub
l1: '出错时，提示再次输入
    MsgBox "无效的密码，请重试!", vbExclamation, "登录"
    txtPassword.SetFocus
End Sub