删除一个xml

 /// <summary>
    /// 删除商品xml提交动作
    /// </summary>
    /// <param name="ids">id集合</param>
    public void etao_delProductXml(string ids)
    {
        XmlDocument doc1 = new XmlDocument();
        doc1.Load(Server.MapPath("~/etao/IncrementIndex.xml"));
       
        XmlNodeList nodes1 = doc1.GetElementsByTagName("outer_id");

        string[] strArray = ids.Split(',');
        for (int i = 0; i < strArray.Length; i++)
        {
            string xmlpath = base.Server.MapPath("~/etao/item/" + strArray[i] + ".xml");

            try
            {

                if (System.IO.File.Exists(xmlpath))
                {
                    File.Delete(xmlpath);
                }
                foreach (XmlNode xn in nodes1)//遍历任何子节点 
                {
                    XmlElement xe = (XmlElement)xn;//将子节点类型转换为XmlElement类型 
                    if (xe.InnerText.Equals(strArray[i]))
                    {
                        xe.SetAttribute("action", "delete");//则修改该属性为“delete”
                        XmlNodeList modified = doc1.GetElementsByTagName("modified");
                        modified.Item(0).InnerText = DateTime.Now.ToString();
                        doc1.Save(Server.MapPath("~/etao/IncrementIndex.xml"));
                       
                    }
                }
            }
            catch
            {

            }
        }



    }

xml:

 <?xml version="1.0" encoding="utf-8" ?> 
- <root>
  <version>1.0</version> 
  <modified>2011-7-4 9:42:54</modified> 
  <seller_id>官网</seller_id> 
  <cat_url>etao/SellerCats.xml</cat_url> 
  <dir>/etao/item/</dir> 
- <item_ids>
  <outer_id action="upload">ID1000018452</outer_id> 
  <outer_id action="upload">ID1000018413</outer_id> 
  <outer_id action="delete">ID1000018312</outer_id> 
  
  </item_ids>
  </root>