Using C# to read XML file

using System;
using System.Xml;
namespace ReadXml1
{
    class Class1
    {
        static void Main(string[] args)
        {
            // Create an isntance of XmlTextReader and call Read method to read the file
            XmlTextReader textReader = new XmlTextReader("C:\\books.xml");
            textReader.Read();
            // If the node has value
            while (textReader.Read())
            {
                // Move to fist element
                textReader.MoveToElement();
                Console.WriteLine("XmlTextReader Properties Test");
                Console.WriteLine("===================");
                // Read this element's properties and display them on console
                Console.WriteLine("Name:" + textReader.Name);
                Console.WriteLine("Base URI:" + textReader.BaseURI);
                Console.WriteLine("Local Name:" + textReader.LocalName);
                Console.WriteLine("Attribute Count:" + textReader.AttributeCount.ToString());
                Console.WriteLine("Depth:" + textReader.Depth.ToString());
                Console.WriteLine("Line Number:" + textReader.LineNumber.ToString());
                Console.WriteLine("Node Type:" + textReader.NodeType.ToString());
                Console.WriteLine("Attribute Count:" + textReader.Value.ToString());
            }
        }
    }
}

XElement root = XElement.Load("PurchaseOrder.xml");

// Find all elements of "Address" and select only elements where attribute Type is "Billing"
IEnumerable<xelement> address = from el in root.Elements("Address")
                      where (string)el.Attribute("Type") == "Billing"
                      select el;

foreach (XElement elm in address)
{
    Console.WriteLine(el);
}
</xelement>

DataSet _ds = new DataSet("MyDataSet");
_ds.ReadXml(@"c:\xml\file\path\abc.xml");