我现在要做TreeTable的延迟加载,请问我怎么获取TreeTable中的动态的列的IDJS代码
  // Make sure row is selected when span is clicked
             $("table#dnd-example tbody tr span").mousedown(function() {
                 $($(this).parents("tr")[0]).trigger("mousedown");
                 var NameOrderBy = "productCategoryId";
                 LoadCity(NameOrderBy);
                 
              
               });
             function LoadCity(NameOrderBy) {
                 $.ajax({
                     type: "get",
                     dataType: "json",
                     url: "ProductCategories.aspx?Name=" + NameOrderBy,
                     success: function(msg) {
                         var data = msg;
                         $("#EmployeeINfo").html("");
                         for (var i = 0; i < data.length; i++) {
                             $("#EmployeeINfo").append("<td>" + data[i].Name + "</td>");
                         }
                     }
                 });
             }
View代码
<table id="dnd-example" onclick="doclick()" cellspacing="1" cellpadding="3" rules="all" border="0" class="listTable" style="border-width:0px;width:100%; padding-left :2px;">
    <thead>
            <tr>
                <th>商品分类代码</th>
                <th>商品分类名</th>
                <th>序号</th>
                <th>操作</th>
            </tr>
        </thead>
        <%foreach (var item in Model) 
           {
               var node = "node--";
               var parent = "parent ";
               //var bar = "-";
               var childOf = "child-of-";
                
               var IdName = "";
               var ClassName ="";
               
               //一级分类
               if (item.Parent == null)
               {
                   IdName = node + item.Code;
                   ClassName = parent;
               }
               //非一级分类
               if (item.Parent != null)
               {
                   parentlists = string.Empty;
                   string parentlist = GetParentList(item.ID);
                   string ReMoveLastComma = parentlist.Substring(0, parentlist.LastIndexOf('-'));
                   string[] ToArr = ReMoveLastComma.Split('-');                   string str = string.Empty;
                   for (int i = ToArr.Length; i > 0; i--)
                   {
                       str += ToArr[i - 1] + '-';
                   }
                   string ReMoveLastBar = str.Substring(0, parentlist.LastIndexOf('-'));
                   string GetIdName = ReMoveLastBar.Substring(0, ReMoveLastBar.LastIndexOf('-'));
                   //有子类
                   if (item.Children != null)
                   {
                       IdName = node + ReMoveLastBar;
                       ClassName = parent + childOf + node + GetIdName;
                   }
                   //没有子类
                   else
                   {
                       IdName = node + ReMoveLastBar;
                       ClassName = childOf + node + GetIdName;
                   }
               }
              %> 
                <tbody>
                    <tr id="<%=IdName %>"  class="<%=ClassName %>" >
                        <td >
                           <!--<%= Html.Encode(item.Code)%>-->
                           <%=Html.ActionLink(Html.Encode(item.Code), "ProductCategoryList", "ProductCategory", new { productId = item.ID }, new {id="productCategoryId" })%>
                           <%=Html.Hidden("productCategoryId", ViewData["productCategoryId"])%>
                        </td>
                        <td>
                            <%= Html.Encode(item.Name)%>
                        </td>
                         <td>
                            <%= Html.Encode(item.Sequence)%>
                        </td>
                        <td>
                            <%= Html.ActionLink("编辑", "Edit", new { CategoryId = item.ID }, new { @class = "editLink" })%> |
                            <%= Html.ActionLink("删除", "Delete", new { CategoryId = item.ID }, new { @class = "delLink" })%> |
                            <%= Html.ActionLink("添加子类", "AddChild", new { CategoryId = item.ID }, new { @class = "addLink" })%>
                        </td>
                    </tr>
                </tbody>
                
            <%}%>
    </table>Controller代码
public ActionResult ProductCategoryList()
        {
            Title = "产品类型列表";
            var productCategoryList = ProductCategory.GetAll().OrderBy(p => p.Code);
            var list = productCategoryList.Where(p => p.Parent == null).ToList();
            List<ProductCategory> list_ProductCategory = new List<ProductCategory>(list.Count);
            for (var i = 0; i < list.Count; i++)
            {
                list_ProductCategory.Add(new ProductCategory
                {
                    Code = list[i].Code,
                    Name = list[i].Name,
                    Sequence = list[i].Sequence
                });
            }
            return Json(list_ProductCategory);
        }        public ActionResult ProductCategories(Guid id,string name)
        {
            Title = "产品类型列表";            //var productCategoryList = ProductCategory.GetChildren(name.).OrderBy(p => p.Code);
           // return View(productCategoryList);
            return null;
        }