今天闲来无事，就根据Ztree这个树插件写了个小例子，其中遇见一个小问题 卡主了


页面初始化 “世界根节点包含中国” 在中国下添加子节点 这是可以的，比如名字叫newNode1 ,当再次在newNode1下添加节点，这取newNode1节点作为父节点的ID是 null，没有取到，当我刷新页面的时候 就取到了， 这是因为添加完后 没刷新页面吗？
代码：

    $(function () {

             $.ajax({
                 type: "Get",
                 url: "@Url.Action("ztree","ZtreeTest")",
                //async: false,
                success: function (data) {
                    $.fn.zTree.init($("#treeDemo"), setting, data);
                }
            });
        })
        var setting = {
            data: {
                simpleData: {
                    enable: true,
                }
            },
            callback: {
                /*节点获取与展开回调*/
                beforeExpand: beforeExpand,
                onAsyncSuccess: onAsyncSuccess,
                onAsyncError: onAsyncError,

                onClick: zTreeOnClick,
                beforeEditName: beforeEditName,
                beforeRemove: beforeRemove,
                beforeRename: beforeRename,
                onRemove: onRemove,
                onRename: onRename
            },
            edit: {
                enable: true,
                editNameSelectAll: true
            },
            view: {
                addHoverDom: addHoverDom,
                removeHoverDom: removeHoverDom,
                selectedMulti: false
            }
         
        };


    function addHoverDom(treeId, treeNode) {
            var sObj = $("#" + treeNode.tId + "_span");
            if (treeNode.editNameFlag || $("#addBtn_" + treeNode.tId).length > 0) return;
            var addStr = "<span class='button add' id='addBtn_" + treeNode.tId
                + "' title='add node' onfocus='this.blur();'></span>";
            sObj.after(addStr);
            var btn = $("#addBtn_" + treeNode.tId);
            if (btn) btn.bind("click", function () {
                var zTree = $.fn.zTree.getZTreeObj(treeID);
                zTree.addNodes(treeNode, {
                     pId: treeNode.id, name: "new node" + newCount
                });
                $.ajax({
                    url: '/ZtreeTest/ZtreeAdd', //url  action是方法的名称
                    data: {_pid: treeNode.id, _name: "new node" + newCount },
                    type: 'POST',
                    success: function (data) {
                        //异常完成后，刷新父节点及下面所有子节点
                        //var node = zTree.getSelectedNodes();
                        //var node1 = node[0];
                        //node1.isParent = true;//把属性变成true，让这个节点被认为是根节点
                        zTree.reAsyncChildNodes(treeNode, "refresh");
                    }
                });
                newCount++;
                return false;
            });
        };

  public string ZtreeAdd( string _pid, string _name)
        {
            int _Suess = 0;
            ////                          Zid=自己的ID                            PID=父ID  
            menutree men = new menutree { Zid = Convert.ToString(Guid.NewGuid()), Pid = _pid, Name = _name, LinkUrl = null };
            using (Context db = new Context())
            {
                db.Menutree.Add(men);
                _Suess = db.SaveChanges();
            }
}