public static tb_node_model GetOneNode(DbConn PubConn,int id)
 {
     tb_node_dal dal = new tb_node_dal();
     DataRow dr = dal.GetOneNode(PubConn, id);
     tb_node_model model = CreateModelForNode(dr);
     return model;
 }
 public ActionResult Update(int id)
 {
     return this.Visit(Core.EnumUserRole.Admin, () =>
     {
         tb_node_dal dal = new tb_node_dal();
         using (DbConn PubConn = DbConfig.CreateConn(Config.TaskConnectString))
         {
             PubConn.Open();
             tb_node_model model = dal.GetOneNode(PubConn, id);
             return View(model);
         }
     });
 }