c#中具有前缀读取问题的XML元素

using System;
using System.Xml.Linq;

class Program
{
    static void Main()
    {
        string xml = @"<root xmlns:prefix='http://example.com'>
                          <prefix:element>Value</prefix:element>
                      </root>";

        XDocument doc = XDocument.Parse(xml);

        XNamespace ns = "http://example.com";
        XElement element = doc.Root.Element(ns + "element");

        if (element != null)
        {
            string value = element.Value;
            Console.WriteLine(value);
        }
    }
}