adminlogin.frm

财务管理系统的基本功能的实现

VERSION 5.00
Begin VB.Form AdminLogin 
   BorderStyle     =   0  'None
   Caption         =   "Form1"
   ClientHeight    =   3690
   ClientLeft      =   0
   ClientTop       =   0
   ClientWidth     =   5760
   LinkTopic       =   "Form1"
   Picture         =   "AdminLogin.frx":0000
   ScaleHeight     =   3690
   ScaleWidth      =   5760
   ShowInTaskbar   =   0   'False
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command2 
      Caption         =   "取 消"
      Height          =   495
      Left            =   3720
      TabIndex        =   3
      Top             =   2640
      Width           =   1575
   End
   Begin VB.CommandButton Command1 
      Caption         =   "登 录"
      Height          =   495
      Left            =   960
      TabIndex        =   2
      Top             =   2640
      Width           =   1335
   End
   Begin VB.TextBox pass 
      Appearance      =   0  'Flat
      Height          =   270
      IMEMode         =   3  'DISABLE
      Left            =   3600
      PasswordChar    =   "*"
      TabIndex        =   1
      Top             =   1920
      Width           =   1815
   End
   Begin VB.TextBox User 
      Appearance      =   0  'Flat
      Height          =   270
      Left            =   3600
      TabIndex        =   0
      Top             =   1320
      Width           =   1815
   End
End
Attribute VB_Name = "AdminLogin"
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
    
    If User.Text = "" Then      '保证用户名和密码都填写
        MsgBox "用户名不能为空！", vbCritical
        User.SetFocus
        Exit Sub
    End If
    If Pass.Text = "" Then
        MsgBox "密码不能为空！", vbCritical
        Pass.SetFocus
        Exit Sub
    End If
    If DbHandle.DbConnection Then
        sql = "TBL_ADMIN"       '用SQL语句判断是否是合法管理员
        rs.CursorType = adOpenDynamic
        rs.LockType = adLockOptimistic
        rs.Filter = "ADMIN_ID='" & User.Text & "' AND ADMIN_PASSWORD='" & Pass.Text & "'"
        rs.Open sql, DbFinance
        If DbHandle.resultcount(rs) <> 1 Then       '不存在管理员记录提示错误信息并且退出系统
            MsgBox "用户名或密码错误！", vbExclamation
            rs.Close
            Set rs = Nothing
            DbHandle.DbClose
            End
        End If
        DbHandle.DbClose
        mainform.Show       '登陆成功显示主窗体
        Unload Me
    Else
        MsgBox "数据库错误！", vbExclamation
        DbHandle.DbClose
        End
    End If
End Sub

Private Sub Command2_Click()
    End     '点击取消退出管理系统
End Sub

Private Sub Form_Load()
    Me.Left = (Screen.Width - Me.ScaleWidth) / 2        '登陆窗体居中显示
    Me.Top = (Screen.Height - Me.ScaleHeight) / 2
End Sub

Private Sub Form_Unload(Cancel As Integer)
    On Error Resume Next
    DbHandle.DbClose
End Sub