frmlogin.frm

自己写的物流管理系统

VERSION 5.00
Begin VB.Form frmLogin 
   BorderStyle     =   3  'Fixed Dialog
   Caption         =   "用户登录"
   ClientHeight    =   1545
   ClientLeft      =   2835
   ClientTop       =   3480
   ClientWidth     =   3750
   Icon            =   "frmLogin.frx":0000
   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 
      Enabled         =   0   'False
      Height          =   345
      Left            =   1290
      TabIndex        =   3
      Text            =   "admin"
      Top             =   135
      Width           =   2325
   End
   Begin VB.CommandButton cmdOK 
      Caption         =   "确定"
      Default         =   -1  'True
      Height          =   390
      Left            =   495
      TabIndex        =   2
      Top             =   1020
      Width           =   1140
   End
   Begin VB.CommandButton cmdCancel 
      Cancel          =   -1  'True
      Caption         =   "取消"
      Height          =   390
      Left            =   2100
      TabIndex        =   1
      Top             =   1020
      Width           =   1140
   End
   Begin VB.TextBox txtPassword 
      Height          =   345
      IMEMode         =   3  'DISABLE
      Left            =   1290
      PasswordChar    =   "*"
      TabIndex        =   0
      Top             =   525
      Width           =   2325
   End
   Begin VB.Label lblLabels 
      Caption         =   "用户名称(&U):"
      Height          =   270
      Index           =   0
      Left            =   105
      TabIndex        =   4
      Top             =   150
      Width           =   1080
   End
   Begin VB.Label lblLabels 
      Caption         =   "密码(&P):"
      Height          =   270
      Index           =   1
      Left            =   105
      TabIndex        =   5
      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

Private Sub cmdCancel_Click()

    LoginSucceeded = False
    Unload Me
End Sub

Private Sub cmdOK_Click()
    
    If trycount <= 5 Then
    
        If (Trim(txtUserName) = "") Or (Trim(txtPassword) = "") Then
            
            trycount = trycount + 1
            MsgBox "用户名密码不能为空!", , "信息提示"
        Else
        
            Dim strsql As String
            Dim rs As New ADODB.Recordset
            
            strsql = "SELECT PASSWORD FROM MYUSERS WHERE USERNAME = '" & Trim(txtUserName) & "'"
            Set rs = sys.DB.OpenRecordSet(strsql)
            If Not (rs.BOF Or rs.EOF) Then
                If Trim(txtPassword) = rs.Fields("PASSWORD") Then
                    trycount = 0
                    LoginSucceeded = True
                    Me.Hide
                    MainForm.Show
                Else
                
                    trycount = trycount + 1
                    MsgBox "无效的密码，请重试!", , "信息提示"
                    txtPassword.SetFocus
                    SendKeys "{Home}+{End}"
                End If

            Else
            
                trycount = trycount + 1
                MsgBox "无效的密码，请重试!", , "信息提示"
                txtPassword.SetFocus
                SendKeys "{Home}+{End}"
            End If
        End If
    Else

        MsgBox "非法用户!", , "信息提示"
        Unload Me
    End If
End Sub