frmmodifypsw.frm

图书馆管理系统 VB制作 用户名admin和密码123456

VERSION 5.00
Begin VB.Form frmmodifyPsw 
   Caption         =   "修改密码"
   ClientHeight    =   2880
   ClientLeft      =   60
   ClientTop       =   420
   ClientWidth     =   4095
   Icon            =   "frmmodifyPsw.frx":0000
   LinkTopic       =   "Form1"
   ScaleHeight     =   2880
   ScaleWidth      =   4095
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton cmdtest 
      Caption         =   "检验用户名"
      Height          =   375
      Left            =   3000
      TabIndex        =   7
      Top             =   960
      Width           =   1095
   End
   Begin VB.CommandButton cmdreset 
      Caption         =   "重置"
      Height          =   375
      Left            =   2280
      TabIndex        =   6
      Top             =   2160
      Width           =   975
   End
   Begin VB.CommandButton cmdsubmit 
      Caption         =   "提交"
      Height          =   375
      Left            =   960
      TabIndex        =   5
      Top             =   2160
      Width           =   975
   End
   Begin VB.TextBox txtPsw 
      Height          =   375
      IMEMode         =   3  'DISABLE
      Left            =   1560
      PasswordChar    =   "*"
      TabIndex        =   4
      Top             =   1380
      Width           =   1455
   End
   Begin VB.TextBox txtname 
      Height          =   375
      Left            =   1560
      TabIndex        =   2
      Top             =   960
      Width           =   1455
   End
   Begin VB.Label lblPsw 
      Caption         =   "新 密 码"
      Height          =   255
      Left            =   240
      TabIndex        =   3
      Top             =   1440
      Width           =   1215
   End
   Begin VB.Label lblname 
      Caption         =   "用 户 名"
      Height          =   255
      Left            =   240
      TabIndex        =   1
      Top             =   1020
      Width           =   1095
   End
   Begin VB.Label lblmodify 
      Caption         =   "请输入您的用户名和新密码"
      Height          =   375
      Left            =   360
      TabIndex        =   0
      Top             =   360
      Width           =   2175
   End
End
Attribute VB_Name = "frmmodifyPsw"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub cmdreset_Click()
    txtname.Text = ""
    txtPsw.Text = ""
End Sub

Private Sub cmdsubmit_Click()
    If checkform = False Then      '对输入内容进行判断，如果不符合要求则不能登录
        Exit Sub
    End If
    Dim strUsername, strNewPassword, strsqlup, strconn As String
    strUsername = Trim(txtname.Text)
    strNewPassword = Trim(txtPsw.Text)
    strconn = "Provider=Microsoft.Jet.OLEDB.4.0;Data source=" & _
    App.Path & "\test.mdb;Persist Security Info=False"                  '连接access数据库
    Dim conn As New ADODB.Connection
    conn.ConnectionString = strconn
    conn.Open
        'On Error Resume Next
        Dim stuname, stuPsw
        stuname = Trim(txtname.Text)
        stuPsw = Trim(txtPsw.Text)
        'strsqlup = "update library set stuname='tt',bookname='tt',publish='tt',price='30',auther='tt',borrow_date='2005/1/1 ' where stuid='1 '"
        strsqlup = "update User set Password='123' where UserName='admin '"
        'strsqlup = "update User set Password='" & stuPsw & "' where UserName='" & stuname & " '"
        conn.Execute (strsqlup)
        If Err.Number = 0 Then
            MsgBox "您的密码已经修改成功 ！"
        Else
            MsgBox Err.Description
        End If
    conn.Close
    Set conn = Nothing
End Sub
Private Function checkform() As Boolean
     Dim strUsername, strNewPassword
     strUsername = Trim(txtname.Text)
     strNewPassword = Trim(txtPsw.Text)
     If strUsername = "" Then
        MsgBox "用户名不能为空，请输入用户名！"      '判断用户名是否为空
        txtname.SetFocus
        checkform = False
        Exit Function
    End If
    If strNewPassword = "" Then
        MsgBox "密码不能为空，请输入密码！"          '判断密码是否为空
        txtPsw.SetFocus
        checkform = False
        Exit Function
    End If
    End Function

Private Sub cmdtest_Click()
    Dim strUsername, strNewPassword, strsqlsl, strconn As String
    strUsername = Trim(txtname.Text)
    strNewPassword = Trim(txtPsw.Text)
    strconn = "Provider=Microsoft.Jet.OLEDB.4.0;Data source=" & _
    App.Path & "\test.mdb;Persist Security Info=False"                  '连接access数据库
    Dim conn As New ADODB.Connection
    Dim rs As New ADODB.Recordset
    conn.ConnectionString = strconn
    conn.Open
    strsqlsl = "Select Top 1 UserName,Password From [User] WHERE UserName= '" & strUsername & "'"
    rs.Open strsqlsl, conn, 1, 1     '对输入内容与数据库中的数据进行比较
    If rs.RecordCount = 0 Then
        MsgBox "该用户不存在，请核对！"
        txtname.Text = ""
        txtname.SetFocus
        rs.Close
    conn.Close
    Set rs = Nothing
    Else
        MsgBox "用户名存在，请继续操作！"
    End If
End Sub