why show this error for me

my class
Imports Microsoft.VisualBasic Imports System.Data Imports System.Data.SqlClient Imports EncDecCls Imports Microsoft.Win32 Public Class Company Private id As Integer = 0 Private name As String = "" Public Property idpr() As Integer Get Return id End Get Set(ByVal value As Integer) id = value End Set End Property Public Property namepr() As String Get Return name End Get Set(ByVal value As String) name = value End Set End Property Public Function Readconnectionstring() As String Dim Key As RegistryKey = Registry.LocalMachine.OpenSubKey("Software\Wow6432Node\CATS\Conn") Dim DataSource As Object = Key.GetValue("DataSource") Dim DB As Object = Key.GetValue("DataBase" ...

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