frmlogin.frm

人事管理系统的一个比较不错的VB软件 有管理系统的功能

VERSION 5.00
Begin VB.Form frmLogin 
   BorderStyle     =   3  'Fixed Dialog
   Caption         =   "登录"
   ClientHeight    =   1545
   ClientLeft      =   2835
   ClientTop       =   3480
   ClientWidth     =   3750
   LinkTopic       =   "Form1"
   LockControls    =   -1  'True
   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
      MaxLength       =   6
      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
      MaxLength       =   15
      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
Public LoginSucceeded As Boolean
Public LoginNumber As Integer
Dim mrc As ADODB.Recordset


Private Sub cmdCancel_Click()
    '设置全局变量为 false
    '不提示失败的登录
   LoginSucceeded = False
   Unload Me
   ' Me.Hide
End Sub

Private Sub cmdOk_Click()
   Dim txtSql As String
   Dim MsgText As String
   
   LoginNumber = LoginNumber + 1
   
   If Trim(txtUserName) <> "" Then
      txtSql = "select * from passwd where Id='" & Trim(txtUserName.Text) & "'" ' and  password='" & Trim(txtPassword.Text) & "'"
      Set mrc = Nothing
      Set mrc = ExecuteSQL(txtSql)
      If mrc.EOF = True Then
         txtSql = "select * from limit where Id='" & Trim(txtUserName.Text) & "'"
         Set mrc = Nothing
         Set mrc = ExecuteSQL(txtSql)
         If Not mrc.EOF Then
            MsgBox "你尚未设置密码，请进入系统维护中的修改密码设置密码!!"
            PublicUserId = txtUserName.Text
            LoginSucceeded = True
            Unload Me
            Exit Sub
         Else
            MsgBox "用户或密码不对，请重新输入！", vbOKOnly + vbExclamation, "警告"
            txtUserName.SetFocus
            SendKeys "{Home}+{End}"
         End If
         
         'Exit Sub
      Else
         If Trim(mrc.Fields(1).Value) = Trim(txtPassword.Text) Then
         
            PublicUserId = txtUserName.Text
            LoginSucceeded = True
            Unload Me
            Exit Sub
         Else
            MsgBox "用户或密码不对，请重新输入！", vbOKOnly + vbExclamation, "警告"
            txtUserName.SetFocus
            SendKeys "{Home}+{End}"
         End If
      End If
  Else
     MsgBox "用户不能为空,请重新输入！", vbOKOnly + vbExclamation, "警告"
     txtUserName.SetFocus
     SendKeys "{Home}+{End}"
     'Exit Sub
  End If
   
   If LoginNumber = 3 Then   '三次输入不正就不能登入系统
      LoginSucceeded = False
      Unload Me
   End If
   
  
End Sub

Private Sub Form_Load()
   Me.Left = (Screen.Width - Me.Width) / 2
   Me.Top = (Screen.Height - Me.Height) / 2
   LoginNumber = 0
End Sub



Private Sub txtPassword_KeyPress(KeyAscii As Integer)
   If KeyAscii = 13 Then
      cmdOk.SetFocus
   End If
End Sub



Private Sub txtUserName_KeyPress(KeyAscii As Integer)
   If KeyAscii = 13 Then
      txtPassword.SetFocus
   End If
End Sub