frmlogin.frm

vb+sql的图书管理系统。

VERSION 5.00
Begin VB.Form frmLogin 
   BorderStyle     =   3  'Fixed Dialog
   Caption         =   "登录"
   ClientHeight    =   1545
   ClientLeft      =   2835
   ClientTop       =   3480
   ClientWidth     =   3750
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   912.837
   ScaleMode       =   0  'User
   ScaleWidth      =   3521.047
   ShowInTaskbar   =   0   'False
   StartUpPosition =   2  '屏幕中心
   Begin VB.TextBox txtUserName 
      Height          =   345
      Left            =   1290
      TabIndex        =   1
      Top             =   135
      Width           =   2325
   End
   Begin VB.CommandButton cmdOK 
      Caption         =   "确定"
      Default         =   -1  'True
      Height          =   390
      Left            =   495
      TabIndex        =   4
      Top             =   1020
      Width           =   1140
   End
   Begin VB.CommandButton cmdCancel 
      Cancel          =   -1  'True
      Caption         =   "取消"
      Height          =   390
      Left            =   2100
      TabIndex        =   5
      Top             =   1020
      Width           =   1140
   End
   Begin VB.TextBox txtPassword 
      Height          =   345
      IMEMode         =   3  'DISABLE
      Left            =   1290
      PasswordChar    =   "*"
      TabIndex        =   3
      Top             =   525
      Width           =   2325
   End
   Begin VB.Label lblLabels 
      Caption         =   "用户名称(&U):"
      Height          =   270
      Index           =   0
      Left            =   105
      TabIndex        =   0
      Top             =   150
      Width           =   1080
   End
   Begin VB.Label lblLabels 
      Caption         =   "密码(&P):"
      Height          =   270
      Index           =   1
      Left            =   105
      TabIndex        =   2
      Top             =   540
      Width           =   1080
   End
End
Attribute VB_Name = "frmLogin"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit

Private Sub cmdCancel_Click()
Unload Me
End Sub

Private Sub cmdOK_Click()
    isgly = False
    issj = False
    iscjgly = False
    If txtUserName = "" Then
     MsgBox "请输入您的ID.", vbOKOnly, "提示": Exit Sub
    End If
    
    If rsgly.State = adStateOpen Then rsgly.Close
       rsgly.Open "select * from 管理员 where ID='" + Trim(txtUserName.Text) + "' and 密码='" + Trim(txtPassword.Text) + "'", cn, adOpenKeyset, adLockOptimistic, 1
    If rsgly.RecordCount > 0 Then
    
       If rsgly.Fields("等级") = "系统管理" Then
       
           iscjgly = True
           
       ElseIf rsgly.Fields("等级") = "书籍管理" Then
           issj = True
       Else
           isgly = True
       End If
        LoginSucceeded = True
        isreader = False
        
        Me.Hide
        Call updata
        MDIForm1.Show
        
    End If
    
End Sub