XmlReaderSettings

using System;/*  j  a va 2  s.co m*/
using System.Collections.Generic;
using System.Data;
using System.Xml;
using System.Xml.Schema;

public class MainClass
{
    public static void Main()
    {
        XmlReaderSettings settings = new XmlReaderSettings();
        settings.ProhibitDtd = false;
        settings.ValidationType = ValidationType.DTD;
        //settings.ValidationType=ValidationType.Schema;
        //settings.Schemas.Add("", "");

        settings.ValidationEventHandler += new ValidationEventHandler(OnValidationError);

        XmlReader reader=XmlReader.Create("value", settings);
        while (reader.Read())
        {
        }
        reader.Close();
    }
    static void OnValidationError(object sender, ValidationEventArgs e)
    {
        MessageBox.Show(e.Message);
    }
}