form9.frm

学生成绩管理系统vb（源码）－功能简单实用

VERSION 5.00
Begin VB.Form Form9 
   BackColor       =   &H00E0E0E0&
   Caption         =   "请登陆"
   ClientHeight    =   2565
   ClientLeft      =   4590
   ClientTop       =   4350
   ClientWidth     =   5655
   LinkTopic       =   "Form9"
   ScaleHeight     =   2565
   ScaleWidth      =   5655
   Begin VB.CommandButton Command1 
      Caption         =   "退出"
      Height          =   375
      Left            =   3960
      TabIndex        =   6
      Top             =   1560
      Width           =   855
   End
   Begin VB.TextBox txtUsername 
      Height          =   375
      Left            =   1560
      TabIndex        =   5
      Top             =   720
      Width           =   1695
   End
   Begin VB.CommandButton cmdCancel 
      Caption         =   "取消"
      Height          =   375
      Left            =   3960
      TabIndex        =   3
      Top             =   1080
      Width           =   855
   End
   Begin VB.TextBox txtPassword 
      Height          =   375
      IMEMode         =   3  'DISABLE
      Left            =   1560
      PasswordChar    =   "*"
      TabIndex        =   1
      Top             =   1440
      Width           =   1695
   End
   Begin VB.CommandButton cmdOK 
      Caption         =   "确定"
      Height          =   375
      Left            =   3960
      TabIndex        =   0
      Top             =   600
      Width           =   855
   End
   Begin VB.Label Label2 
      Caption         =   "管理员名(&U)："
      Height          =   255
      Left            =   240
      TabIndex        =   4
      Top             =   720
      Width           =   1215
   End
   Begin VB.Label Label1 
      Caption         =   "密码(M)："
      Height          =   255
      Left            =   240
      TabIndex        =   2
      Top             =   1560
      Width           =   855
   End
End
Attribute VB_Name = "Form9"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False

Option Explicit
Const username As String = "123"
Const password As String = "123"

Private Sub cmdCancel_Click()
    txtUsername.Text = ""
    txtPassword.Text = ""
    txtUsername.SetFocus
End Sub

Private Sub cmdOK_Click()
    Dim i As Integer
    Static n As Integer
    If txtUsername.Text = username And txtPassword.Text = password Then
        Form2.Show
        Unload Form1
        Unload Me
    Else
        n = n + 1
        If n < 3 Then
            i = MsgBox("用户名或密码错误，请重新输入！", vbCritical + vbRetryCancel + vbDefaultButton1, "登录失败")
            If i = vbRetry Then
                txtUsername.Text = ""
                txtPassword.Text = ""
                txtUsername.SetFocus
            Else
                End
            End If
        Else
            MsgBox "三次错误，请退出！", vbOKOnly + vbExclamation, "登录失败"
            End
        End If
    End If
End Sub

Private Sub Command1_Click()
Unload Me
Form1.Show
End Sub