public void Obtener()
        {
            DataTable Dt = new DataTable();
            var       notificationRegisterTime = Session["LastUpdated"] != null?Convert.ToDateTime(Session["LastUpdated"]) : DateTime.Now;

            using (SqlDataAdapter adp = new SqlDataAdapter("cc_obtenerPush", conStr))
            {
                adp.SelectCommand.CommandType = CommandType.StoredProcedure;
                adp.SelectCommand.Parameters.AddWithValue("@Fecha", notificationRegisterTime);
                adp.Fill(Dt);
            }
            GridView1.DataSource = Dt;
            GridView1.DataBind();
            DtList.DataSource = Dt;
            DtList.DataBind();
        }