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Easyui 加载树(easyui-tree)[dotnet]

前台  html:<ul class="easyui-tree" id="ul_Tree" data-options="fit:true,animate:true"></ul>javascript 加载$("#ul_Tree").tree({        url: ‘/webservice/CreditExtension/CreditExtension.asmx/QueryImages?Hid_FileCode=‘ + $("#Hid_FileCode").val() + "&imgstyle=0&r=" + new Date().getMilliseconds(),        method: ‘get‘,        onSelect: function (note) {            if (note.attributes != undefined && note.attributes != "") {                var style = note.attributes.substr(note.attributes.lastIndexOf("."), note.attributes.length - note.attributes.lastIndexOf("."));                if (style == ".bmp" || style == ".gif" || style == ".jpg" || style == ".png" || style == ".jpeg") {                    setTheFirst(note.attributes);                    $("#img_show").attr("src", note.attributes);                    $("#div_title").html(note.text);                } else { window.open(note.attributes, "preview", ""); }            }            else { $("#ul_Tree").tree("toggle", note.target); }        }    });

后台返回json:public string GetToTreeJson(DataSet ds){	 StringBuilder result = new StringBuilder();	 result.Append("[");            foreach (DataRow dr in ds.Tables[0].Rows)            {                result.Append("{\"id\":0,\"text\":\"" + dr["text"].ToString() + "\",\"iconCls\":\"icon-hkb\"");                DataRow[] drs = ds.Tables[1].Select(" parent_id=‘" + dr["id"].ToString() + "‘");                if (drs.Length > 0)                {                    result.Append(",\"state\":\"closed\",\"children\":[");                    for (int i = 0; i < drs.Length; i++)                    {                        if (i > 0) result.Append(",");                        result.Append("{\"id\":" + drs[i]["id"].ToString() + ",\"text\":\"" + drs[i]["text"].ToString() + "\",\"attributes\":\"" + imgpath + formatString(drs[i]["attributes"].ToString()) + "\",\"iconCls\":\"icon-" + getStyle(drs[i]["attributes"]) + "\"}");                    }                    result.Append("]");                }                else                {                    result.Append(",\"state\":\"open\"");                }                result.Append("},");            }            result.Remove(result.Length - 1, 1);            result.Append("]");	return result.toString();}

  

Easyui 加载树(easyui-tree)[dotnet]