frmlogin.frm

VB ACCESSS数据库课程设计

VERSION 5.00
Object = "{67397AA1-7FB1-11D0-B148-00A0C922E820}#6.0#0"; "MSADODC.OCX"
Begin VB.Form frmLogin 
   BorderStyle     =   1  'Fixed Single
   Caption         =   "登录"
   ClientHeight    =   6330
   ClientLeft      =   45
   ClientTop       =   330
   ClientWidth     =   9180
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   Picture         =   "frmLogin.frx":0000
   ScaleHeight     =   6330
   ScaleWidth      =   9180
   StartUpPosition =   3  '窗口缺省
   Begin VB.TextBox txtpassword 
      Height          =   495
      IMEMode         =   3  'DISABLE
      Left            =   4800
      PasswordChar    =   "*"
      TabIndex        =   6
      Top             =   3240
      Width           =   2655
   End
   Begin VB.TextBox txtuserid 
      Height          =   495
      Left            =   4800
      TabIndex        =   5
      Top             =   2160
      Width           =   2655
   End
   Begin MSAdodcLib.Adodc adouser 
      Height          =   375
      Left            =   240
      Top             =   240
      Visible         =   0   'False
      Width           =   1935
      _ExtentX        =   3413
      _ExtentY        =   661
      ConnectMode     =   0
      CursorLocation  =   3
      IsolationLevel  =   -1
      ConnectionTimeout=   15
      CommandTimeout  =   30
      CursorType      =   3
      LockType        =   3
      CommandType     =   1
      CursorOptions   =   0
      CacheSize       =   50
      MaxRecords      =   0
      BOFAction       =   0
      EOFAction       =   0
      ConnectStringType=   1
      Appearance      =   1
      BackColor       =   -2147483643
      ForeColor       =   -2147483640
      Orientation     =   0
      Enabled         =   -1
      Connect         =   "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=student.mdb;Persist Security Info=False"
      OLEDBString     =   "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=student.mdb;Persist Security Info=False"
      OLEDBFile       =   ""
      DataSourceName  =   ""
      OtherAttributes =   ""
      UserName        =   ""
      Password        =   ""
      RecordSource    =   ""
      Caption         =   "Adodc1"
      BeginProperty Font {0BE35203-8F91-11CE-9DE3-00AA004BB851} 
         Name            =   "宋体"
         Size            =   9
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      _Version        =   393216
   End
   Begin VB.CommandButton Command2 
      Caption         =   "取消"
      BeginProperty Font 
         Name            =   "新宋体"
         Size            =   15
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   495
      Left            =   5880
      TabIndex        =   4
      Top             =   4800
      Width           =   1815
   End
   Begin VB.CommandButton Command1 
      Caption         =   "确定"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   15
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   495
      Left            =   1200
      TabIndex        =   3
      Top             =   4800
      Width           =   1815
   End
   Begin VB.Label Label3 
      BackStyle       =   0  'Transparent
      Caption         =   "用户密码"
      BeginProperty Font 
         Name            =   "隶书"
         Size            =   24
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   615
      Left            =   1200
      TabIndex        =   2
      Top             =   3240
      Width           =   2175
   End
   Begin VB.Label Label2 
      BackStyle       =   0  'Transparent
      Caption         =   "用 户 名"
      BeginProperty Font 
         Name            =   "隶书"
         Size            =   24
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   495
      Left            =   1200
      TabIndex        =   1
      Top             =   2160
      Width           =   2055
   End
   Begin VB.Label Label1 
      BackStyle       =   0  'Transparent
      Caption         =   "学生信息管理系统"
      BeginProperty Font 
         Name            =   "幼圆"
         Size            =   36
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   975
      Left            =   1680
      TabIndex        =   0
      Top             =   600
      Width           =   6015
   End
End
Attribute VB_Name = "frmLogin"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Dim rs As ADODB.Recordset

Private Sub Command1_Click()
Static interr As Integer
adouser.Refresh
Set rs = adouser.Recordset
rs.Find "用户名='" & txtuserid.Text & "'"
If Not rs.EOF Then '若用户名正确
'检查密码
If rs("密码") = txtpassword.Text Then '若密码正确
gstruser = txtuserid.Text '存在用户
If rs("权限") = "管理员" Then '存用户权限
gblnpurview = True
Else
gblnpurview = False
End If
frmMain.Show
Unload Me
Else
interr = interr + 1
If interr = 3 Then
Set rs = Nothing
Unload Me
Else
MsgBox "密码输入错误,请重新输入!", vbExclamation
With txtpassword '焦点返回密码框
.SelStart = 0
.SelLength = Len(.Text)
.SetFocus
End With
End If
End If
Else
interr = interr + 1
If interr = 3 Then
Set rs = Nothing
Unload Me
Else
MsgBox "用户名输入错误,请重新输入!", vbExclamation
With txtuserid
.SelStart = 0
.SelLength = Len(.Text)
.SetFocus
End With
End If
End If
End Sub

Private Sub Command2_Click()
Unload Me
End Sub

Private Sub Form_Initialize()
ChDrive App.Path
ChDir App.Path
End Sub

Private Sub Form_Load()
Command1.Default = True
Dim sql As String
sql = "select * from 用户"
adouser.RecordSource = sql
End Sub