frmlogin.frm

超市的管理系统

VERSION 5.00
Begin VB.Form frmLogin 
   BackColor       =   &H00FFC0C0&
   BorderStyle     =   3  'Fixed Dialog
   Caption         =   "用 户 登 录"
   ClientHeight    =   3330
   ClientLeft      =   2835
   ClientTop       =   3480
   ClientWidth     =   6000
   BeginProperty Font 
      Name            =   "宋体"
      Size            =   9
      Charset         =   134
      Weight          =   700
      Underline       =   0   'False
      Italic          =   0   'False
      Strikethrough   =   0   'False
   EndProperty
   Icon            =   "frmLogin.frx":0000
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   1967.474
   ScaleMode       =   0  'User
   ScaleWidth      =   5633.676
   ShowInTaskbar   =   0   'False
   Begin VB.TextBox txtName 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   423
      Left            =   2880
      TabIndex        =   1
      Top             =   990
      Width           =   2325
   End
   Begin VB.CommandButton cmdOK 
      Caption         =   "确 定"
      Default         =   -1  'True
      BeginProperty Font 
         Name            =   "幼圆"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   390
      Left            =   2640
      TabIndex        =   4
      Top             =   2640
      Width           =   1140
   End
   Begin VB.CommandButton cmdCancel 
      Cancel          =   -1  'True
      Caption         =   "取 消"
      BeginProperty Font 
         Name            =   "幼圆"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   390
      Left            =   4320
      TabIndex        =   5
      Top             =   2640
      Width           =   1140
   End
   Begin VB.TextBox txtPwd 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   423
      IMEMode         =   3  'DISABLE
      Left            =   2880
      PasswordChar    =   "*"
      TabIndex        =   3
      Top             =   1800
      Width           =   2325
   End
   Begin VB.Label Label1 
      AutoSize        =   -1  'True
      BackColor       =   &H00FFFFC0&
      BackStyle       =   0  'Transparent
      Caption         =   "欢迎使用腾龙信息系统"
      BeginProperty Font 
         Name            =   "幼圆"
         Size            =   18
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00800000&
      Height          =   360
      Left            =   1080
      TabIndex        =   6
      Top             =   240
      Width           =   3750
   End
   Begin VB.Image Image2 
      Height          =   480
      Left            =   480
      Picture         =   "frmLogin.frx":030A
      Top             =   1800
      Width           =   480
   End
   Begin VB.Image Image1 
      Height          =   480
      Left            =   480
      Picture         =   "frmLogin.frx":0614
      Top             =   1080
      Width           =   480
   End
   Begin VB.Label lblLabels 
      AutoSize        =   -1  'True
      BackColor       =   &H00FFFFC0&
      BackStyle       =   0  'Transparent
      Caption         =   "登录名称(&U):"
      BeginProperty Font 
         Name            =   "幼圆"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   240
      Index           =   0
      Left            =   1200
      TabIndex        =   0
      Top             =   1080
      Width           =   1440
   End
   Begin VB.Label lblLabels 
      AutoSize        =   -1  'True
      BackColor       =   &H00FFFFC0&
      BackStyle       =   0  'Transparent
      Caption         =   "密码(&P):"
      BeginProperty Font 
         Name            =   "幼圆"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   240
      Index           =   1
      Left            =   1680
      TabIndex        =   2
      Top             =   1860
      Width           =   960
   End
End
Attribute VB_Name = "frmLogin"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Dim rct As New ADODB.Recordset
Private Sub cmdCancel_Click()

    Unload Me

End Sub

Private Sub CmdOk_Click()

    Dim str As String
        
    str = "select * from employee"                           '打开employee表
    
    Set rct = QueryXFInfo(str)
 
     rct.MoveFirst                                           '将游标移到记录集首行
     
     '用记录集获取表中所有记录，并对登录对话框中的输入依次和每个记录进行对比，一致的的登录成功

     Do While Not rct.EOF

        If TxtName.Text = Trim(rct.Fields.Item(1).Value) And Txtpwd.Text = Trim(rct.Fields.Item(2).Value) Then

            MsgBox "登录成功！！", vbInformation + vbOKOnly, "欢迎进入系统！"
            
            strName = TxtName.Text
            
            frmMDI.StatusBar1.Panels(2).Alignment = sbrCenter
            
            frmMDI.StatusBar1.Panels(2).Text = " 操 作 员 ：" & TxtName.Text
            
            frmMDI.Show
            
            rct.Close

            Unload Me

            Exit Sub

        End If
        
        rct.MoveNext

    Loop

    MsgBox "用户名或密码不准确，请重新输入！", vbInformation + vbOKOnly, "无法登录，请退出！"
    
    TxtName = ""
    
    Txtpwd = ""
    
    TxtName.SetFocus                                '重新设置光标，以便进行再输入
    
    rct.Close
    
        
End Sub

Private Sub Form_Load()
   
    If ConnectToServer = False Then End

    frmLogin.Show
   
    TxtName.Text = ""
   
    Txtpwd.Text = ""
   
    CmdOk.Enabled = False                       '如果用户名称和密码无输入，则确定按钮不可用
    
End Sub




Private Sub txtPwd_Change()

    CmdOk.Enabled = True                                   '密码有输入，则确定按钮可用
    

End Sub