register.frm

简单的图书管理系统

VERSION 5.00
Begin VB.Form pass 
   Caption         =   "密码验证"
   ClientHeight    =   6255
   ClientLeft      =   3045
   ClientTop       =   2325
   ClientWidth     =   8235
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   Picture         =   "register.frx":0000
   ScaleHeight     =   6255
   ScaleWidth      =   8235
   StartUpPosition =   2  'CenterScreen
   Begin VB.CommandButton Command3 
      Caption         =   "退出"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   5520
      TabIndex        =   7
      Top             =   3960
      Width           =   855
   End
   Begin VB.CommandButton Command2 
      Caption         =   "取消"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   3840
      TabIndex        =   6
      Top             =   3960
      Width           =   855
   End
   Begin VB.CommandButton Command1 
      Caption         =   "确定"
      CausesValidation=   0   'False
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   2040
      TabIndex        =   5
      Top             =   3960
      Width           =   855
   End
   Begin VB.TextBox Text2 
      Height          =   375
      IMEMode         =   3  'DISABLE
      Left            =   3600
      PasswordChar    =   "*"
      TabIndex        =   3
      Text            =   "Text2"
      Top             =   2760
      Width           =   1935
   End
   Begin VB.TextBox Text1 
      Height          =   375
      Left            =   3600
      TabIndex        =   2
      Text            =   "Text1"
      Top             =   1800
      Width           =   1935
   End
   Begin VB.Label Label3 
      AutoSize        =   -1  'True
      BackColor       =   &H80000000&
      BackStyle       =   0  'Transparent
      Caption         =   "欢迎使用图书管理系统"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   26.25
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00800000&
      Height          =   525
      Left            =   1320
      TabIndex        =   4
      Top             =   600
      Width           =   5250
   End
   Begin VB.Label Label2 
      AutoSize        =   -1  'True
      BackStyle       =   0  'Transparent
      Caption         =   "密码"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   15
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00800000&
      Height          =   300
      Left            =   2400
      TabIndex        =   1
      Top             =   2760
      Width           =   600
   End
   Begin VB.Label Label1 
      AutoSize        =   -1  'True
      BackStyle       =   0  'Transparent
      Caption         =   "用户名"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   14.25
         Charset         =   0
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00800000&
      Height          =   285
      Left            =   2400
      TabIndex        =   0
      Top             =   1800
      Width           =   855
   End
End
Attribute VB_Name = "pass"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Public n As Integer
Private Sub Command1_Click()
Dim mrc As ADODB.Recordset
txtsql = "select * from user where 用户名='" & _
    Trim$(Text1.Text) & "'" & "and 密码='" & Trim$(Text2.Text) + "'"
Set mrc = exesql(txtsql)
If mrc.RecordCount = 0 Then
    n = n + 1
    If n < 3 Then
    MsgBox "没有此用户", vbOKOnly + vbExclamation, "信息提示"
    Text1.Text = ""
    Text2.Text = ""
    Text1.SetFocus
    Else
    MsgBox "三次登陆失败，请退出系统", vbOKOnly + vbExclamation, "信息提示"
    mrc.Close
    Unload Me
    End If
Else
    userlevel = Trim(mrc.Fields("级别"))
    mrc.Close
    Unload Me
    menu.Show
End If

End Sub

Private Sub Command2_Click()
Text1.Text = ""
Text2.Text = ""

End Sub

Private Sub Command3_Click()
Unload Me
End Sub

Private Sub Form_Load()
Text1.Text = ""
Text2.Text = ""
n = 0
End Sub

Private Sub Text1_KeyPress(KeyAscii As Integer)
    Call entdata(KeyAscii)
End Sub