主题：代码有误吗？

web.Refresh
Dim data As Date = web.Document.Body.InnerText   ' 日期对比
Dim d As Date = "2016-06-30"

Dim Code As String = GetConfigValue("Register" & ComputerId,"")
Dim Ok As Boolean
If Code > "" AndAlso DecryptText(Code,"abc","abc") = ComputerId Then '如果注册码正确
    OK = True
Else
    If data>d Then   '
        Forms("注册").Open()
        Code = GetConfigValue("Register" & ComputerId,"")
        If Code > "" AndAlso DecryptText(Code,"abc","abc") = ComputerId Then '如果注册码正确
            OK = True
        End If
    End If
    If data>d AndAlso Ok = False Then
        Messagebox.Show("您正在使用的产品已经超期!")
        Syscmd.Project.Exit()
    End If
End If