frmlogon.frm

一个题库系统 可以按照试题的难度

VERSION 5.00
Begin VB.Form frmLogon 
   BorderStyle     =   1  'Fixed Single
   Caption         =   "用户登录"
   ClientHeight    =   2220
   ClientLeft      =   36
   ClientTop       =   336
   ClientWidth     =   4140
   BeginProperty Font 
      Name            =   "宋体"
      Size            =   10.8
      Charset         =   134
      Weight          =   400
      Underline       =   0   'False
      Italic          =   0   'False
      Strikethrough   =   0   'False
   EndProperty
   Icon            =   "frmLogon.frx":0000
   LinkTopic       =   "Form1"
   LockControls    =   -1  'True
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   2220
   ScaleWidth      =   4140
   StartUpPosition =   2  '屏幕中心
   Begin VB.Frame Frame1 
      Height          =   1956
      Left            =   204
      TabIndex        =   0
      Top             =   84
      Width           =   3744
      Begin VB.TextBox Text1 
         Height          =   384
         Left            =   1656
         TabIndex        =   4
         Top             =   252
         Width           =   1656
      End
      Begin VB.TextBox Text2 
         Height          =   384
         IMEMode         =   3  'DISABLE
         Left            =   1656
         PasswordChar    =   "*"
         TabIndex        =   3
         Top             =   804
         Width           =   1656
      End
      Begin VB.CommandButton Command1 
         Caption         =   "确定"
         Height          =   408
         Left            =   1284
         TabIndex        =   2
         Top             =   1404
         Width           =   948
      End
      Begin VB.CommandButton Command2 
         Caption         =   "取消"
         Height          =   408
         Left            =   2340
         TabIndex        =   1
         Top             =   1416
         Width           =   948
      End
      Begin VB.Label Label1 
         AutoSize        =   -1  'True
         Caption         =   "用户名称"
         Height          =   216
         Left            =   600
         TabIndex        =   6
         Top             =   348
         Width           =   864
      End
      Begin VB.Label Label2 
         AutoSize        =   -1  'True
         Caption         =   "用户密码"
         Height          =   216
         Left            =   624
         TabIndex        =   5
         Top             =   888
         Width           =   864
      End
   End
End
Attribute VB_Name = "frmLogon"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit

Private Sub Command1_Click()
    Dim sql As String
    Dim Rs As New ADODB.Recordset
    
    sql = "select * from users where name='" & Text1.Text & "'"
    Rs.open sql, dbcon, adOpenKeyset, adLockOptimistic, adCmdText
    
    If Rs.EOF And Rs.BOF Then
        MsgMsg "无此用户!"
        Exit Sub
    End If
    If Rs("pwd") <> GetHash(Text2.Text) Then
        MsgMsg "密码不正确!"
        Exit Sub
    End If
    Rs.Close
    frmLeft.Show
    Unload Me
    
End Sub

Private Sub Command2_Click()
    Unload Me
End Sub

Private Sub Form_Load()
    On Error GoTo lab
    
    Dim scon As String
    scon = "PROVIDER=Microsoft.Jet.OLEDB.3.51;Data Source=" & App.Path & "\TK.mdb"
    p_conn = scon
    dbcon.open scon
    
    Exit Sub
lab:
    MsgMsg "数据库打开错误!"
    MsgMsg Err.Description
End Sub