frmlogin.frm

学生选课系统

VERSION 5.00
Object = "{67397AA1-7FB1-11D0-B148-00A0C922E820}#6.0#0"; "MSADODC.OCX"
Begin VB.Form FrmLogin 
   Caption         =   "用户登陆"
   ClientHeight    =   2145
   ClientLeft      =   3450
   ClientTop       =   3270
   ClientWidth     =   4530
   LinkTopic       =   "Form1"
   ScaleHeight     =   2145
   ScaleWidth      =   4530
   Visible         =   0   'False
   Begin MSAdodcLib.Adodc AdodcLogin 
      Height          =   330
      Left            =   1560
      Top             =   1320
      Width           =   1200
      _ExtentX        =   2117
      _ExtentY        =   582
      ConnectMode     =   0
      CursorLocation  =   3
      IsolationLevel  =   -1
      ConnectionTimeout=   15
      CommandTimeout  =   30
      CursorType      =   3
      LockType        =   3
      CommandType     =   8
      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=C:\My Documents\student.mdb;Persist Security Info=False"
      OLEDBString     =   "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\My Documents\student.mdb;Persist Security Info=False"
      OLEDBFile       =   ""
      DataSourceName  =   ""
      OtherAttributes =   ""
      UserName        =   ""
      Password        =   ""
      RecordSource    =   ""
      Caption         =   "AdodcLogin"
      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 CmdCancel 
      Caption         =   "取消"
      Height          =   375
      Left            =   3120
      TabIndex        =   5
      Top             =   1440
      Width           =   1095
   End
   Begin VB.CommandButton CmdOK 
      Caption         =   "确定"
      Height          =   375
      Left            =   240
      TabIndex        =   4
      Top             =   1440
      Width           =   1095
   End
   Begin VB.TextBox TxtPassword 
      Height          =   270
      IMEMode         =   3  'DISABLE
      Left            =   1800
      PasswordChar    =   "*"
      TabIndex        =   2
      Top             =   840
      Width           =   2535
   End
   Begin VB.TextBox TxtUserName 
      Height          =   270
      Left            =   1800
      TabIndex        =   1
      Top             =   240
      Width           =   2535
   End
   Begin VB.Label LabPassword 
      Caption         =   "密码："
      Height          =   255
      Left            =   240
      TabIndex        =   3
      Top             =   840
      Width           =   1215
   End
   Begin VB.Label LabUserName 
      Caption         =   "用户名："
      Height          =   255
      Left            =   240
      TabIndex        =   0
      Top             =   240
      Width           =   1215
   End
End
Attribute VB_Name = "FrmLogin"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Dim SysUserName As String
Dim SysUserPwd As String
'窗体启动时的初始化代码
 Private Sub Form_Load()
  TxtPassword.Text = ""
  TxtUserName.Text = ""
frmLogin.Show
'设置按钮及控件状态
  TxtUserName.Enabled = True
  TxtPassword.Enabled = True
  CmdOK.Enabled = False
End Sub
'"确定"按钮添加代码
Private Sub cmdOK_Click()
   SysUserName = TxtUserName.Text
   SysUserPwd = TxtPassword.Text
   AdodcLogin.CommandType = adCmdText
   AdodcLogin.RecordSource = "Select * from User where id = "
   AdodcLogin.Refresh
   Dim irecordCount As Integer
   irecordCount = AdodcLogin.Recordset.RecordCount
   If irecordCount = 0 Then
     MsgBox "对不起，没有这个用户名,请您重新输入", , "登录错误"
   End If
End Sub
'"退出"按钮代码
    Private Sub cmdCancel_Click()
      End
End Sub
'用户登录名输入文本框状态改变事件代码
Private Sub TxtUserName_Change()
   If TxtUserName.Text <> "" Then
     '激活"确定"按钮
     CmdOK.Enabled = True
     '激活用户登录密码输入文本框
TxtPassword.Enabled = True
   End If
End Sub