using System;
using System.Xml;
using System.Xml.Serialization;
using System.Collections.Generic;
using System.IO;

public class Test
{
	public static void Main()
	{
	    var xml = @"
        	<Contracts>
            	<Contract EntryType=""U"" ID=""401"" GroupCode=""1"">
            	</Contract>
        	</Contracts>
    	";
    	
    	//Create our own namespaces for the output
    	XmlSerializerNamespaces ns = new XmlSerializerNamespaces();
    
    	//Add an empty namespace and empty value
    	ns.Add("", "");
    	
    	var sr = new StringReader(xml);
    	var xr = new XmlTextReader(sr);
    	var ser = new XmlSerializer(typeof(ContractPosting));
    	var result = (ContractPosting)ser.Deserialize(xr);
        
        foreach(var contract in result.Contracts)
            Console.WriteLine("(" + contract.EntryType + ", " +
                contract.ID + ", " + contract.GroupCode + ")");
	}
}

// Define other methods and classes here
[XmlRoot("Contracts")]
public class ContractPosting {
    [XmlElement("Contract", typeof(Contract))]
	public List<Contract> Contracts { get; set; }
}

public class Contract {
	[XmlAttribute("EntryType")]
	public string EntryType { get; set; }
	[XmlAttribute("ID")]
	public int ID { get; set; }
	[XmlAttribute("GroupCode")]
	public int GroupCode { get; set; }
}