XmlAttributes.XmlIgnore Property

using System;
using System.IO;
using System.Xml.Serialization;

// This is the class that will be serialized.
public class Group
{
// The GroupName value will be serialized--unless it's overridden.
public string GroupName;

/* This field will be ignored when serialized--
unless it's overridden. */
[XmlIgnoreAttribute]
public string Comment;
}