modifypassword.vb

采用Visual Basic.NET开发的高速公路收费系统.

Public Class ModifyPassword
    Inherits System.Windows.Forms.Form

    Private CurUser As String
    Private CurPassword As String

    Private LoginSQLstr As String
    '
    Private Caption As String
    '定义消息对话框中显示的消息标题。
    Private Message As String
    '定义消息对话框中显示的消息内容。
#Region " Windows 窗体设计器生成的代码 "

    Public Sub New()
        MyBase.New()

        '该调用是 Windows 窗体设计器所必需的。
        InitializeComponent()

        '在 InitializeComponent() 调用之后添加任何初始化

    End Sub

    '窗体重写处置以清理组件列表。
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub

    'Windows 窗体设计器所必需的
    Private components As System.ComponentModel.IContainer

    '注意：以下过程是 Windows 窗体设计器所必需的
    '可以使用 Windows 窗体设计器修改此过程。
    '不要使用代码编辑器修改它。
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents Label3 As System.Windows.Forms.Label
    Friend WithEvents Label4 As System.Windows.Forms.Label
    Friend WithEvents TextBox1 As System.Windows.Forms.TextBox
    Friend WithEvents TextBox2 As System.Windows.Forms.TextBox
    Friend WithEvents TextBox3 As System.Windows.Forms.TextBox
    Friend WithEvents TextBox4 As System.Windows.Forms.TextBox
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Button2 As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Dim resources As System.Resources.ResourceManager = New System.Resources.ResourceManager(GetType(ModifyPassword))
        Me.Label1 = New System.Windows.Forms.Label()
        Me.Label2 = New System.Windows.Forms.Label()
        Me.Label3 = New System.Windows.Forms.Label()
        Me.Label4 = New System.Windows.Forms.Label()
        Me.TextBox1 = New System.Windows.Forms.TextBox()
        Me.TextBox2 = New System.Windows.Forms.TextBox()
        Me.TextBox3 = New System.Windows.Forms.TextBox()
        Me.TextBox4 = New System.Windows.Forms.TextBox()
        Me.Button1 = New System.Windows.Forms.Button()
        Me.Button2 = New System.Windows.Forms.Button()
        Me.SuspendLayout()
        '
        'Label1
        '
        Me.Label1.Font = New System.Drawing.Font("黑体", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label1.ForeColor = System.Drawing.Color.Blue
        Me.Label1.Location = New System.Drawing.Point(16, 24)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(80, 21)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "当前账号"
        '
        'Label2
        '
        Me.Label2.Font = New System.Drawing.Font("黑体", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label2.ForeColor = System.Drawing.Color.Blue
        Me.Label2.Location = New System.Drawing.Point(16, 56)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(72, 21)
        Me.Label2.TabIndex = 1
        Me.Label2.Text = "旧密码"
        '
        'Label3
        '
        Me.Label3.Font = New System.Drawing.Font("黑体", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label3.ForeColor = System.Drawing.Color.Blue
        Me.Label3.Location = New System.Drawing.Point(16, 88)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(72, 21)
        Me.Label3.TabIndex = 2
        Me.Label3.Text = "新密码"
        '
        'Label4
        '
        Me.Label4.Font = New System.Drawing.Font("黑体", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label4.ForeColor = System.Drawing.Color.Blue
        Me.Label4.Location = New System.Drawing.Point(16, 120)
        Me.Label4.Name = "Label4"
        Me.Label4.Size = New System.Drawing.Size(72, 21)
        Me.Label4.TabIndex = 3
        Me.Label4.Text = "确认新密码"
        '
        'TextBox1
        '
        Me.TextBox1.BackColor = System.Drawing.SystemColors.Info
        Me.TextBox1.Font = New System.Drawing.Font("黑体", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.TextBox1.ForeColor = System.Drawing.Color.Blue
        Me.TextBox1.Location = New System.Drawing.Point(96, 24)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.Size = New System.Drawing.Size(120, 22)
        Me.TextBox1.TabIndex = 4
        Me.TextBox1.Text = ""
        '
        'TextBox2
        '
        Me.TextBox2.Font = New System.Drawing.Font("黑体", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.TextBox2.ForeColor = System.Drawing.Color.Blue
        Me.TextBox2.Location = New System.Drawing.Point(96, 56)
        Me.TextBox2.Name = "TextBox2"
        Me.TextBox2.PasswordChar = Microsoft.VisualBasic.ChrW(42)
        Me.TextBox2.Size = New System.Drawing.Size(120, 22)
        Me.TextBox2.TabIndex = 5
        Me.TextBox2.Text = ""
        '
        'TextBox3
        '
        Me.TextBox3.Font = New System.Drawing.Font("黑体", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.TextBox3.ForeColor = System.Drawing.Color.Blue
        Me.TextBox3.Location = New System.Drawing.Point(96, 88)
        Me.TextBox3.Name = "TextBox3"
        Me.TextBox3.PasswordChar = Microsoft.VisualBasic.ChrW(42)
        Me.TextBox3.Size = New System.Drawing.Size(120, 22)
        Me.TextBox3.TabIndex = 6
        Me.TextBox3.Text = ""
        '
        'TextBox4
        '
        Me.TextBox4.Font = New System.Drawing.Font("黑体", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.TextBox4.ForeColor = System.Drawing.Color.Blue
        Me.TextBox4.Location = New System.Drawing.Point(96, 120)
        Me.TextBox4.Name = "TextBox4"
        Me.TextBox4.PasswordChar = Microsoft.VisualBasic.ChrW(42)
        Me.TextBox4.Size = New System.Drawing.Size(120, 22)
        Me.TextBox4.TabIndex = 7
        Me.TextBox4.Text = ""
        '
        'Button1
        '
        Me.Button1.Font = New System.Drawing.Font("华文新魏", 9.749999!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Button1.ForeColor = System.Drawing.Color.Navy
        Me.Button1.Location = New System.Drawing.Point(224, 72)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(64, 32)
        Me.Button1.TabIndex = 8
        Me.Button1.Text = "确定"
        '
        'Button2
        '
        Me.Button2.DialogResult = System.Windows.Forms.DialogResult.Cancel
        Me.Button2.Font = New System.Drawing.Font("华文新魏", 9.749999!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Button2.ForeColor = System.Drawing.Color.Navy
        Me.Button2.Location = New System.Drawing.Point(224, 112)
        Me.Button2.Name = "Button2"
        Me.Button2.Size = New System.Drawing.Size(64, 32)
        Me.Button2.TabIndex = 9
        Me.Button2.Text = "取消"
        '
        'ModifyPassword
        '
        Me.AcceptButton = Me.Button1
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.CancelButton = Me.Button2
        Me.ClientSize = New System.Drawing.Size(292, 155)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.Button2, Me.Button1, Me.TextBox4, Me.TextBox3, Me.TextBox2, Me.TextBox1, Me.Label4, Me.Label3, Me.Label2, Me.Label1})
        Me.FormBorderStyle = System.Windows.Forms.FormBorderStyle.Fixed3D
        Me.Icon = CType(resources.GetObject("$this.Icon"), System.Drawing.Icon)
        Me.Name = "ModifyPassword"
        Me.Text = "修改用户密码"
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub Button2_Click(ByVal sender As System.Object, _
                              ByVal e As System.EventArgs) _
                              Handles Button2.Click
        Me.Close()
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, _
                              ByVal e As System.EventArgs) _
                              Handles Button1.Click
        CurUser = Me.TextBox1.Text
        CurPassword = Me.TextBox2.Text
        '
        LoginSQLstr = "SELECT * FROM Login WHERE User='" & _
        CurUser & " 'AND Pwd='" & CurPassword & " '"
        '查询账号和密码是否一致。
        Message = "对不起，您输入的密码与账号不一致，请您重新输入的密码。"
        Caption = "登录失败"
        '定义没有账号与密码不一致的消息
        Call ConnToDB(LoginSQLstr, Message, Caption)
        '调用模块中数据库访问函数来查询。
        If IsError = False Then
            CurPassword = Me.TextBox3.Text
            '获取新的密码
            If CurPassword = "" Then
                MessageBox.Show("密码不能为空，请输入您的新密码。", _
                "修改密码失败", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
                Exit Sub
                '密码不能为空，否则退出子过程
            End If
            Dim tempstr As String = Me.TextBox4.Text
            '获取确认的密码
            If StrComp(CurPassword, tempstr, CompareMethod.Text) = 0 Then
                DS.Tables.Item(0).Rows.Item(0).Item(1) = CurPassword
                '如果确认密码与新密码一致，则更新新密码，不考虑大小写
            Else
                MessageBox.Show("请重新确认您的新密码。并检查它们是否一致。", _
                "密码确认失败", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
                Exit Sub
                '
            End If
            '没有发生错误时继续进行二级验证
        Else
            Exit Sub
            '退出子过程。 

            '发生错误时需要触发的事件
        End If
        Call UpdateDB(DS)
        '更新密码修改
        MessageBox.Show("您已经成功的修改了原密码，并记住您的新密码： " & _
        CurPassword & "。", "提示信息", _
        MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
        '给出修改成功的消息，并提示用户记住新的密码
        Me.Close()
        '关闭本窗体
    End Sub

    Private Sub ModifyPassword_Load(ByVal sender As System.Object, _
                                    ByVal e As System.EventArgs) _
                                    Handles MyBase.Load
        Me.TextBox1.Text = User + AdminId
        '获取当前登录用户的账号
        Me.TextBox1.ReadOnly = True
        '设置为只读，防止用户更改
    End Sub
End Class