using System;

using System.Xml;

​

public class Program

{

    public static void Main()

    {

                XmlDocument xml = new XmlDocument();

                xml.LoadXml(@"<?xml version=""1.0"" encoding=""UTF-8""?>

<MPD>

    <Period> <Child /> </Period>

</MPD>");

                XmlNode period = xml.DocumentElement.SelectSingleNode("Period");

                foreach (XmlNode child in period)

                {

                    Console.WriteLine(child.Name);

                }

    }

}