frmlogin.frm

商品进销存软件

VERSION 5.00
Begin VB.Form frmlogin 
   BorderStyle     =   3  'Fixed Dialog
   Caption         =   "系统登陆"
   ClientHeight    =   3840
   ClientLeft      =   2445
   ClientTop       =   1755
   ClientWidth     =   5610
   Icon            =   "frmlogin.frx":0000
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   3840
   ScaleWidth      =   5610
   ShowInTaskbar   =   0   'False
   StartUpPosition =   2  '屏幕中心
   Begin VB.Frame Frame1 
      Height          =   2655
      Left            =   120
      TabIndex        =   4
      Top             =   960
      Width           =   5415
      Begin VB.TextBox tbusername 
         BeginProperty Font 
            Name            =   "宋体"
            Size            =   10.5
            Charset         =   134
            Weight          =   400
            Underline       =   0   'False
            Italic          =   0   'False
            Strikethrough   =   0   'False
         EndProperty
         Height          =   270
         Left            =   1800
         TabIndex        =   0
         Text            =   "admin"
         Top             =   480
         Width           =   2655
      End
      Begin VB.TextBox tbpwd 
         BeginProperty Font 
            Name            =   "宋体"
            Size            =   10.5
            Charset         =   134
            Weight          =   400
            Underline       =   0   'False
            Italic          =   0   'False
            Strikethrough   =   0   'False
         EndProperty
         Height          =   270
         IMEMode         =   3  'DISABLE
         Left            =   1800
         PasswordChar    =   "*"
         TabIndex        =   1
         Text            =   "admin"
         Top             =   1080
         Width           =   2655
      End
      Begin VB.CommandButton cmdt 
         Caption         =   "确定"
         Default         =   -1  'True
         Height          =   495
         Left            =   1800
         TabIndex        =   2
         Top             =   1680
         Width           =   1215
      End
      Begin VB.CommandButton cmdf 
         Caption         =   "取消"
         Height          =   495
         Left            =   3240
         TabIndex        =   3
         Top             =   1680
         Width           =   1215
      End
      Begin VB.Image Imagelogin 
         Height          =   720
         Left            =   480
         Picture         =   "frmlogin.frx":08CA
         Top             =   1440
         Width           =   720
      End
      Begin VB.Label labuser 
         Caption         =   "用户名:"
         BeginProperty Font 
            Name            =   "宋体"
            Size            =   10.5
            Charset         =   134
            Weight          =   700
            Underline       =   0   'False
            Italic          =   0   'False
            Strikethrough   =   0   'False
         EndProperty
         Height          =   255
         Index           =   0
         Left            =   600
         TabIndex        =   6
         Top             =   480
         Width           =   855
      End
      Begin VB.Label labuser 
         Caption         =   "密码:"
         BeginProperty Font 
            Name            =   "宋体"
            Size            =   10.5
            Charset         =   134
            Weight          =   700
            Underline       =   0   'False
            Italic          =   0   'False
            Strikethrough   =   0   'False
         EndProperty
         Height          =   255
         Index           =   1
         Left            =   600
         TabIndex        =   5
         Top             =   1080
         Width           =   855
      End
   End
   Begin VB.Label Label1 
      Caption         =   "操作员登陆"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   21.75
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   435
      Left            =   1560
      TabIndex        =   7
      Top             =   240
      Width           =   2175
   End
   Begin VB.Image ImageHead 
      Height          =   900
      Left            =   0
      Top             =   0
      Width           =   5700
   End
End
Attribute VB_Name = "frmlogin"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False

Dim errortime As Integer '用户输入的错误次数
Option Explicit
Private Sub cmdf_Click()
'tbusername = ""
'tbpwd = ""
Unload Me
End Sub

Private Sub cmdt_Click()
Dim rs As ADODB.Recordset
Dim sql As String
Dim UserName As String
Dim password As String
UserName = Trim(tbusername.Text)
If UserName = "" Then
    MsgBox "用户名不能为空！", vbInformation, "系统登陆提示"
    Exit Sub
End If
password = tbpwd.Text
sql = "select * from 系统表 where 用户名='" & UserName & "'"
Set rs = ExeSQL(sql)
If rs.EOF = True Then
    If errortime > 2 Then
        MsgBox "连续三次输入错误,系统自动退出!如果有何疑问请与系统管理员联系.", vbCritical, "系统提示"
        Unload Me
    Else
        MsgBox "没有此用户，请重新输入用户名！", vbExclamation
        errortime = errortime + 1
        tbusername.Text = ""
        tbusername.SetFocus
    End If
Else
    If password = rs!密码 Then
        Load frmmain
        frmmain.Show
        IsLogin = True
        LoginUserName = UserName
        Me.Hide
        Unload Me
    Else
        MsgBox "密码输入错误,请重试!", vbInformation, "系统登陆提示"
        errortime = errortime + 1
        tbpwd.Text = ""
        tbpwd.SetFocus
    End If
End If
rs.Close
Set rs = Nothing
End Sub

Private Sub Form_Load()
errortime = 1
End Sub

Private Sub Form_Unload(Cancel As Integer)
Set frmlogin = Nothing
End Sub