Here's how to plug a schema from the file customers.xsd into an XmlReader:
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Xml;
using System.Xml.Linq;
using System.Text;
using System.IO;
class Program
{
static void Main()
{
XmlReaderSettings settings = new XmlReaderSettings();
settings.ValidationType = ValidationType.Schema;
settings.Schemas.Add(null, "customers.xsd");
XmlReader r = XmlReader.Create("customers.xml", settings);
}
}