jstree的数据后台生成

jstree在前台的HTML格式如:

<div id="demo1" class="demo" style="height:100px;">

    <ul>

        <li id="phtml_1">

            <a href="#">Root node 1</a>

            <ul>

                <li id="phtml_2">

                    <a href="#">Child node 1</a>

                </li>

                <li id="phtml_3">

                    <a href="#">Child node 2</a>

                </li>

            </ul>

        </li>

        <li id="phtml_4">

            <a href="#">Root node 2</a>

        </li>

    </ul>

</div>

 

后台生成这种格式的数据:(无限级,递归)

private string GetTreeString(int pid)

       {

           IEnumerable<Model.TreesModel> TreesModelList= TreesBLL.GetList();

           return "<ul>" + AddTreeNodeString(0, "所有栏目", customClassList) + "</ul>";

       }

       private string AddTreeNodeString(int nodeId, string nodeName,  IEnumerable<Model.TreesModel> list)

       {

           string nodeString = "";

           //找出List 中以nodeId为ParentID的节点

           IEnumerable<Model.TreesModel> childNodes = list.Where(i => i.PId== nodeId).OrderBy(i => i.SortNumber);

           int nodeCount = childNodes.Count();

           if (nodeCount == 0)

           {

               //如果没找到子节点,返回<li></li>

               nodeString = "<li><a href='#'>" + nodeName + "</a></li>";

           }

           else

           {

               //如果找到子节点,增加<ul>

               nodeString = "<li><a href='#'>" + nodeName + "</a><ul>";

               //按子节点循环,每次掉自己增加一个节点的nodeString

               foreach (var item in childNodes)

               {

                   nodeString += AddTreeNodeString(item.Id, item.Name, list);

               }

               //增加</ul>

               nodeString += "</ul></li>";

           }

           return nodeString;

       }