MVC中实现部分内容异步加载

action中定义一个得到结果集的方法
   

 public ActionResult GetItemTree(string title, int itemid, int? page)

        {

            pp = new PagingParam(page ?? 1, VConfig.WebConstConfig.PageSize);

            Common.Page.PagedList<Entity.Res_Item_Resource_R> res_Item_Resource_R = iResourceService.GetRes_Item_Resource_RByItemId(itemid, pp);

            ViewData["res_Item_Resource_R"] = res_Item_Resource_R;

            res_Item_Resource_R.AddParameters = new System.Collections.Specialized.NameValueCollection();

            res_Item_Resource_R.AddParameters.Add("title", title);

            res_Item_Resource_R.AddParameters.Add("itemid", itemid.ToString());



            ViewResult vr = new ViewResult

            {

                ViewData = ViewData,

                MasterName = "",

            };

            return vr;

        }

    在主页面使用下面jquery代码异步调用上面的action
      

  $(function () {

        var id = '<%=itemid %>';

        $.ajax({

            type: "POST",

            url: "/Student/GetItemTree",

            data: { title: '<%=Model.Name %>', itemid: id, page: 1 },

            beforeSend: function (data) { //取回数据前

                $("#itemTree").html('<span style="padding:5">数据加载中...</span>');

            },

            error: function (data) { //发生错误时

//                debugger;

            },

            success: function (data) { //成功返回时

                $("#itemTree").html(data);

            }

        });

   最后在分部视图GetItemTree.ascx中写上你要返回的数据结构即可
   注意一点就是，如果涉及到分页，要用AJAX分页方式

   <div style="float: left">

        <%=Html.AjaxPager(resItemResourceBefore, "itemTree", "GetItemTree", "Student")%>

    </div>