AdvancedHMI Software

General Category => Tips & Tricks => Topic started by: bachphi on June 08, 2018, 10:45:44 PM

Title: Passwording the Keypad of the BasicLabel
Post by: bachphi on June 08, 2018, 10:45:44 PM

In case you want to restrict the access of the keypad, a modification to the OnClick event is needed.

Code: [Select]

Protected Overrides Sub OnClick(e As System.EventArgs)
        MyBase.OnClick(e)
        ReadUserInfo()

        If m_PLCAddressKeypad IsNot Nothing AndAlso (String.Compare(m_PLCAddressKeypad, "") <> 0) And Enabled Then
            Dim PassCodeKeypad As New MfgControl.AdvancedHMI.Controls.AlphaKeyboard3(m_KeypadWidth) With {
                .PasswordChar = True,
                .ForeColor = Color.Red,
                .Text = "ENTER PASSCODE"
            }
            PassCodeKeypad.ShowDialog()
            'If PassCodeKeypad.Value <> "1234" Then
            If PassCodeKeypad.Value <> Password Then
                MsgBox("INVALID PASS CODE!")
                Exit Sub
            End If

            ActivateKeypad()
        End If
    End Sub
And if you do not want to use the hardcoded password, but rather read from an xml file then:

Code: [Select]

    Dim Password As String
    Private Sub ReadUserInfo()
        'Dim UserName As String
        Dim doc As System.Xml.XmlDocument = New System.Xml.XmlDocument()
        Dim filePath = System.IO.Path.Combine(System.IO.Path.GetDirectoryName(Application.ExecutablePath), "Credential.xml")

        doc.Load(filePath)
        For Each m_node As System.Xml.XmlNode In doc.SelectNodes("/passwordlist/User")
            'UserName = m_node.Item("UserName").InnerText
            Password = m_node.Item("Password").InnerText
        Next
    End Sub