读取文件夹下所有文件名，饼写入xml

DirectoryInfo dinfo = new DirectoryInfo(Server.MapPath("~/etao/item/"));
       FileInfo[] files = dinfo.GetFiles("*.xml");  //读取item文件夹下所有文件名

       FileInfo file = new FileInfo(Server.MapPath("~/etao/FullIndex.xml"));
       XmlTextWriter textWriter = new XmlTextWriter(Server.MapPath("~/etao/FullIndex.xml"), Encoding.UTF8);
       textWriter.WriteStartDocument();
       textWriter.WriteStartElement("root");

       textWriter.WriteElementString("version", "1.0");
       textWriter.WriteElementString("modified", DateTime.Now.ToString());
       textWriter.WriteElementString("seller_id", "官网");
       textWriter.WriteElementString("cat_url", config.PayUrl + "etao/SellerCats.xml");
       textWriter.WriteElementString("dir", config.PayUrl + "etao/item/");
       textWriter.WriteStartElement("item_ids");

       foreach (System.IO.FileInfo fi in files)
       {
           textWriter.WriteStartElement("outer_id");
           textWriter.WriteStartAttribute("action");
           textWriter.WriteString("upload");
           textWriter.WriteEndAttribute();
           textWriter.WriteString(fi.Name.Replace(".xml",""));
           textWriter.WriteEndElement();
       }

       textWriter.WriteEndElement();

       textWriter.WriteEndDocument();
       textWriter.Close();

<br>

写入xml后：

<div class="cnblogs_Highlighter"><pre class="brush:csharp;gutter:false;"> <?xml version="1.0" encoding="utf-8" ?>
- <root>
  <version>1.0</version>
  <modified>2011-7-11 15:25:46</modified>
  <seller_id>官网</seller_id>
  <cat_url>http:///etao/SellerCats.xml</cat_url>
  <dir>http:///etao/item/</dir>
- <item_ids>
  <outer_id action="upload">ID1000018289</outer_id>
  <outer_id action="upload">ID1000018292</outer_id>
  <outer_id action="upload">ID1000018294</outer_id>
  <outer_id action="upload">ID1000018298</outer_id>
  <outer_id action="upload">ID1000018299</outer_id>
  <outer_id action="upload">ID1000018303</outer_id>
  <outer_id action="upload">ID1000018305</outer_id>
  <outer_id action="upload">ID1000018309</outer_id>
  <outer_id action="upload">ID1000018412</outer_id>
  <outer_id action="upload">ID1000018413</outer_id>
  <outer_id action="upload">ID1000018452</outer_id>
  </item_ids>
  </root>
</pre>
</div>
<br>