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();

}