Linq 读取Xml 数据

1.xml 数据格式如下

<?xml version="1.0" encoding="utf-8"?>
<root>
  <column>
    <item ip="113.109.36.204" />
    <item ip="104.195.60.89" />
    <item ip="125.77.244.33" />
  </column>
</root>

2.根据当前的IP 于XML 内容的相关的IP相匹配

           bool result = false;

            string FileName = System.Web.HttpContext.Current.Server.MapPath("~/IpConfig.xml");
            XDocument doc = XDocument.Load(FileName);
            //获取item节点 value等于ip的value
            var rel = from p in doc.Descendants("item") where p.Attribute("ip").Value.ToLower() == ip select p;
            if (rel != null && rel.Count() > 0) { result = true; }