frmlogin.frm

大学好的可设内容

VERSION 5.00
Begin VB.Form frmlogin 
   BackColor       =   &H00C0FFC0&
   Caption         =   "登录"
   ClientHeight    =   3450
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   7680
   Icon            =   "frmlogin.frx":0000
   LinkTopic       =   "Form1"
   ScaleHeight     =   3450
   ScaleWidth      =   7680
   StartUpPosition =   2  '屏幕中心
   Begin VB.CommandButton Command2 
      Caption         =   "取消"
      BeginProperty Font 
         Name            =   "楷体_GB2312"
         Size            =   12
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   615
      Left            =   4080
      TabIndex        =   5
      Top             =   2040
      Width           =   1215
   End
   Begin VB.CommandButton Command1 
      Caption         =   "登录"
      BeginProperty Font 
         Name            =   "楷体_GB2312"
         Size            =   12
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   615
      Left            =   2160
      TabIndex        =   4
      Top             =   2040
      Width           =   1095
   End
   Begin VB.TextBox txtpwd 
      BackColor       =   &H80000018&
      Height          =   495
      IMEMode         =   3  'DISABLE
      Left            =   3120
      PasswordChar    =   "*"
      TabIndex        =   3
      Top             =   1320
      Width           =   2175
   End
   Begin VB.TextBox txtuser 
      BackColor       =   &H80000018&
      Height          =   495
      Left            =   3120
      TabIndex        =   2
      Top             =   600
      Width           =   2175
   End
   Begin VB.Line Line4 
      BorderColor     =   &H00FF0000&
      X1              =   2040
      X2              =   5400
      Y1              =   2760
      Y2              =   2760
   End
   Begin VB.Line Line3 
      BorderColor     =   &H00FF0000&
      X1              =   5400
      X2              =   5400
      Y1              =   600
      Y2              =   2760
   End
   Begin VB.Line Line2 
      BorderColor     =   &H00FF0000&
      X1              =   2040
      X2              =   2040
      Y1              =   600
      Y2              =   2760
   End
   Begin VB.Line Line1 
      BorderColor     =   &H00FF0000&
      X1              =   2040
      X2              =   5400
      Y1              =   600
      Y2              =   600
   End
   Begin VB.Label Label3 
      BackColor       =   &H00FFC0C0&
      Caption         =   "欢迎光临图书管理系统"
      BeginProperty Font 
         Name            =   "楷体_GB2312"
         Size            =   15
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H000040C0&
      Height          =   375
      Left            =   2040
      TabIndex        =   6
      Top             =   120
      Width           =   3255
   End
   Begin VB.Label Label2 
      Caption         =   "密码"
      BeginProperty Font 
         Name            =   "楷体_GB2312"
         Size            =   12
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   495
      Left            =   2160
      TabIndex        =   1
      Top             =   1320
      Width           =   855
   End
   Begin VB.Label Label1 
      Caption         =   "用户名"
      BeginProperty Font 
         Name            =   "楷体_GB2312"
         Size            =   12
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   495
      Left            =   2160
      TabIndex        =   0
      Top             =   600
      Width           =   855
   End
End
Attribute VB_Name = "frmlogin"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False



Private Sub Form_Load()
Dim connectionstring As String
connectionstring = "provider=Microsoft.Jet.oledb.4.0;" & "data source=D:\book.mdb"
conn.Open connectionstring
cnt = 0
End Sub
Private Sub Command1_Click()
Dim sql As String
Dim rs_login As New ADODB.Recordset
If Trim(txtuser.Text) = "" Then
MsgBox "没有这个用户！", vbOKOnly + vbExclamation, ""
txtuser.SetFocus
Else
sql = "select * from 系统管理 where 用户名='" & txtuser.Text & "'"
rs_login.Open sql, conn, adOpenKeyset, adLockPessimistic
If rs_login.EOF = True Then
MsgBox "没有这个用户", vbOKOnly + vbExclamation, ""
txtuser.SetFocus
Else
If Trim(rs_login.Fields(1)) = Trim(txtpwd.Text) Then
userID = txtuser.Text
userpow = rs_login.Fields(2)
rs_login.Close
Unload Me
MDIForm1.Show
Else
MsgBox "密码不正确！", vbOKOnly + vbExclamation, ""
txtpwd.SetFocus
End If
End If
End If
cnt = cnt + 1
If cnt = 3 Then
Unload Me
End If
Exit Sub
End Sub
Private Sub Command2_Click()
MDIForm1.Hide

frmlogin.Hide
End Sub