frm_login.frm

采用VB编写的学生订票管理系统 有详细的代码~解压后可以直接使用！~附有使用说明

VERSION 5.00
Object = "{67397AA1-7FB1-11D0-B148-00A0C922E820}#6.0#0"; "MSADODC.OCX"
Begin VB.Form Frm_login 
   BorderStyle     =   1  'Fixed Single
   Caption         =   "系统登录"
   ClientHeight    =   2550
   ClientLeft      =   45
   ClientTop       =   330
   ClientWidth     =   4500
   LinkTopic       =   "Form1"
   LockControls    =   -1  'True
   MaxButton       =   0   'False
   Picture         =   "Frm_login.frx":0000
   ScaleHeight     =   2550
   ScaleWidth      =   4500
   StartUpPosition =   2  '屏幕中心
   Begin MSAdodcLib.Adodc Adodc1 
      Height          =   330
      Left            =   75
      Top             =   2700
      Width           =   2100
      _ExtentX        =   3704
      _ExtentY        =   582
      ConnectMode     =   0
      CursorLocation  =   3
      IsolationLevel  =   -1
      ConnectionTimeout=   15
      CommandTimeout  =   30
      CursorType      =   3
      LockType        =   3
      CommandType     =   1
      CursorOptions   =   0
      CacheSize       =   50
      MaxRecords      =   0
      BOFAction       =   0
      EOFAction       =   0
      ConnectStringType=   1
      Appearance      =   1
      BackColor       =   -2147483643
      ForeColor       =   -2147483640
      Orientation     =   0
      Enabled         =   -1
      Connect         =   "Provider=SQLOLEDB.1;Persist Security Info=False;User ID=sa;Initial Catalog=db_xsdp;Data Source=."
      OLEDBString     =   "Provider=SQLOLEDB.1;Persist Security Info=False;User ID=sa;Initial Catalog=db_xsdp;Data Source=."
      OLEDBFile       =   ""
      DataSourceName  =   ""
      OtherAttributes =   ""
      UserName        =   ""
      Password        =   ""
      RecordSource    =   "select * from tb_jbxx"
      Caption         =   "Adodc1"
      BeginProperty Font {0BE35203-8F91-11CE-9DE3-00AA004BB851} 
         Name            =   "宋体"
         Size            =   9
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      _Version        =   393216
   End
   Begin VB.TextBox Text2 
      Height          =   345
      IMEMode         =   3  'DISABLE
      Left            =   2535
      PasswordChar    =   "*"
      TabIndex        =   1
      Top             =   1380
      Width           =   1770
   End
   Begin VB.TextBox Text1 
      Height          =   345
      Left            =   2535
      TabIndex        =   0
      Top             =   915
      Width           =   1770
   End
   Begin VB.Image Image2 
      Height          =   300
      Left            =   3255
      Top             =   1815
      Width           =   675
   End
   Begin VB.Image Image1 
      Height          =   300
      Left            =   2190
      Top             =   1830
      Width           =   675
   End
End
Attribute VB_Name = "Frm_login"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Dim rs As New ADODB.Recordset
Dim cn As New ADODB.Connection
Private Sub Image1_Click()
    Static intMyTimes As Integer
    Dim rs1 As New ADODB.Recordset
    Dim rs2 As New ADODB.Recordset
    Frm_main.StatusBar1.Panels(4).Text = Text1.Text
    rs1.Open "tb_stu", cnn, adOpenStatic, , adCmdTable
    If Text1.Text = "" And Text2.Text = "" Then
        MsgBox "用户名或密码不能为空！", , "系统提示"
        Exit Sub
    End If

    rs2.Open "tb_gly where 管理员='" & Text1.Text & "' and 密码='" & Text2.Text & "'", cnn, adOpenKeyset, adLockOptimistic
    If rs2.RecordCount < 1 Then
        intMyTimes = intMyTimes + 1
        If intMyTimes = 4 Then
            MsgBox "登录错误超过3次，系统自动退出！", , "系统提示"
            End
        End If
        MsgBox "登录错误！", , "系统提示"
        Text2.Text = ""
    Else
        If rs2.RecordCount = 1 Then
            Frm_main.Show              '通过身份验证则显示主窗体，登录到系统当中
            Unload Me
            Unload Me
            Frm_main.Show
        End If
    End If
    rs1.Close
    rs2.Close
End Sub
Private Sub Image2_Click()
    If MsgBox("是否退出系统！", vbOKCancel + vbQuestion, "系统提示") = vbOK Then
        End
    End If
End Sub
Private Sub text2_KeyDown(KeyCode As Integer, Shift As Integer)
    If KeyCode = 13 Then Image1_Click   '按回车键Image1获得焦点
End Sub
Private Sub Text1_KeyDown(KeyCode As Integer, Shift As Integer)
    If KeyCode = vbKeyReturn Then Text2.SetFocus     '按回车键，text2获得焦点
End Sub