如何避免输出的XML文件无法在前台js脚本中使用。

 1     DataSet ds;
 2             if(BizFacade.DataAccess.GetChildInfoByParentID(Convert.ToInt64(userid),out ds))
 3             {
 4                 tree="<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
 5                 tree+="<xtree>";
 6                 tree+="<nodetype>" + newtreeid + "</nodetype>\n";
 7                 tree+="<oldid>" + oldtreeid + "</oldid>\n";
 8                 tree+="<success>true</success>\n";
 9                 tree+="<tree>\n";
10                 if(ds.Tables[0].Rows.Count>0)
11                 {
12                     for(int i=0;i<ds.Tables[0].Rows.Count;i++)
13                     {
14                         tree += "<leaf>\n";
15                         tree += "<id>"+ds.Tables[0].Rows[i]["userid"].ToString() + "</id>";
16                         tree +=    "<level>"+levelID.ToString()+"</level>\n";
17                         tree +=    "<name>"+HttpUtility.UrlEncodeUnicode(ds.Tables[0].Rows[i]["username"].ToString())+"</name>\n";
18                         tree += "<depart>"+HttpUtility.UrlEncodeUnicode(ds.Tables[0].Rows[i]["depart"].ToString())+"</depart>\n";
19                         tree += "<duty>"+HttpUtility.UrlEncodeUnicode(ds.Tables[0].Rows[i]["duty"].ToString())+"</duty>\n";
20                         tree += "<isforder>"+ds.Tables[0].Rows[i]["isforder"].ToString()+"</isforder>\n";
21                         tree += "</leaf>\n";
22                     }
23                 }
24                 tree+="</tree>\n</xtree>\n";
25             }
26             Response.Clear();
27             Response.ContentType = "text/xml"; //最重要的一句
28             Response.Write(tree);

增加输入类型，这样在前台利用responseXML的时候，就能够获取到该XML对象，并且能够进行继续操作了。