protected void btnLogin_Click(object sender, EventArgs e)
        {
            using (var context = new lab9net.tabletsystemsContainer())
            {
                String emailAdress;
                //string does not have a TryParse
                if (txtUserEmail.Text, out emailAdress))
                {
                    var varUser = (from owner in context.Owners
                                   where owner.emailAddress == txtUserEmail.Text && owner.password == txtuserPassword.Text
                                   select owner).SingleOrDefault();
                    if (varUser != null)
                    {
                        Session["CurrentOwner"] = varUser;
                        lblInfo.Text = varUser.emailAddress;
                        Response.Redirect("/member/customerMainMenu.aspx");
                    }
                    else
                    {
                        lblInfo.Text = "invalid login try again";
                    }
                }
            }
        }