frmlogin.frm

数据库管理系统,图书馆?菘夤芾硐低?图书馆数据库管理系统,图书馆

VERSION 5.00
Begin VB.Form frmLogin 
   BorderStyle     =   3  'Fixed Dialog
   Caption         =   "登录"
   ClientHeight    =   1920
   ClientLeft      =   2835
   ClientTop       =   3480
   ClientWidth     =   4575
   Icon            =   "frmLogin.frx":0000
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   Picture         =   "frmLogin.frx":0442
   ScaleHeight     =   1134.399
   ScaleMode       =   0  'User
   ScaleWidth      =   4295.676
   ShowInTaskbar   =   0   'False
   StartUpPosition =   2  'CenterScreen
   Begin VB.CommandButton cmdCancel 
      Cancel          =   -1  'True
      Caption         =   "退  出"
      Height          =   390
      Left            =   3120
      TabIndex        =   2
      Top             =   1320
      Width           =   1140
   End
   Begin VB.CommandButton cmdOK 
      Caption         =   "登  录"
      Default         =   -1  'True
      Height          =   390
      Left            =   3120
      TabIndex        =   1
      Top             =   840
      Width           =   1140
   End
   Begin VB.ComboBox txtUserName 
      Height          =   300
      Left            =   1200
      TabIndex        =   3
      Top             =   840
      Width           =   1815
   End
   Begin VB.TextBox txtPassword 
      Height          =   345
      IMEMode         =   3  'DISABLE
      Left            =   1200
      PasswordChar    =   "*"
      TabIndex        =   0
      Top             =   1320
      Width           =   1725
   End
   Begin VB.Data Data1 
      Caption         =   "Data1"
      Connect         =   "Access"
      DatabaseName    =   "D:\My Documents\ZQH\VB\mis\mis.mdb"
      DefaultCursorType=   0  'DefaultCursor
      DefaultType     =   2  'UseODBC
      Exclusive       =   0   'False
      Height          =   375
      Left            =   960
      Options         =   0
      ReadOnly        =   0   'False
      RecordsetType   =   1  'Dynaset
      RecordSource    =   "PASSWORD"
      Top             =   1800
      Visible         =   0   'False
      Width           =   1500
   End
   Begin VB.Frame Frame1 
      BorderStyle     =   0  'None
      Height          =   1095
      Left            =   120
      TabIndex        =   5
      Top             =   720
      Width           =   4335
      Begin VB.Label Label3 
         AutoSize        =   -1  'True
         Caption         =   "密码(&P):"
         Height          =   180
         Left            =   120
         TabIndex        =   7
         Top             =   600
         Width           =   720
      End
      Begin VB.Label Label2 
         AutoSize        =   -1  'True
         Caption         =   "用户名(&U):"
         Height          =   180
         Left            =   120
         TabIndex        =   6
         Top             =   120
         Width           =   900
      End
   End
   Begin VB.Label Label1 
      Appearance      =   0  'Flat
      AutoSize        =   -1  'True
      BackColor       =   &H00C0FFC0&
      Caption         =   "欢迎进入图书管理系统"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   21.75
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H000000FF&
      Height          =   435
      Left            =   120
      TabIndex        =   4
      Top             =   120
      Width           =   4350
   End
End
Attribute VB_Name = "frmLogin"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False

Private Sub cmdCancel_Click()
End
End Sub

Private Sub cmdOK_Click()  '登录
Dim i As Integer
Dim mark As Boolean

mark = False
'检查正确的密码
Data1.Recordset.MoveLast
Data1.Recordset.MoveFirst
For i = 1 To Data1.Recordset.RecordCount
    If txtUserName.text = Data1.Recordset.Fields("UserName") Then
        mark = True
        If txtPassword.text = Data1.Recordset.Fields("PW") Then
            txtPassword.text = ""
            Form1.Show (1)
            Exit Sub
        Else
            MsgBox "无效的密码，请重试!", 48, "登录"
            txtPassword.SetFocus
            Exit Sub
        End If
    End If
    Data1.Recordset.MoveNext
Next i
If mark = False Then
   MsgBox "该用户不存在，请重新输入用户名！", 48, "登录"
   txtUserName.SetFocus
   Exit Sub
End If
End Sub

Private Sub Form_Load()
txtUserName.Clear
Dim i As Integer

txtUserName.text = "Administrator"
Data1.DatabaseName = App.Path + "\mis.mdb"
Data1.RecordSource = "PASSWORD"
Data1.Refresh

'初始化用户名列表框
Data1.Recordset.MoveLast
Data1.Recordset.MoveFirst
For i = 1 To Data1.Recordset.RecordCount
    txtUserName.AddItem Data1.Recordset.Fields("UserName")
    Data1.Recordset.MoveNext
Next i
txtUserName.text = "Administrator"
End Sub