XmlValidator.cs

using System;
using System.IO;
using System.Xml;
using System.Xml.Schema;

namespace TestProject
{
    /// <summary>
    /// Simple program to manually validate an XML document against a schema.
    /// </summary>
    public static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            string schemaLocation = @"schema.xsd";
            string docLocation = @"document.xml";

            // --------------------- Schema ---------------------
            Console.Out.WriteLine( "Loading schema..." );
            
            XmlSchema schema;
            FileStream schemaStream;

            schemaStream = new FileStream( schemaLocation, FileMode.Open, FileAccess.Read, FileShare.Read );
            schema = XmlSchema.Read( schemaStream, SchemaValidationHandler );
            Console.Out.WriteLine( "Loading schema...done" );
            Console.Out.WriteLine();

            // --------------------- Document ---------------------

            Console.Out.WriteLine( "Loading document..." );
            XmlDocument doc;
            XmlReaderSettings docReaderSettings;
            XmlReader docReader;

            docReaderSettings = new XmlReaderSettings();
            docReaderSettings.ValidationType = ValidationType.Schema;
            
            docReaderSettings.ValidationFlags =
                XmlSchemaValidationFlags.ProcessIdentityConstraints |
                XmlSchemaValidationFlags.ReportValidationWarnings;

            docReaderSettings.ValidationEventHandler += DocValidationHandler;
            docReaderSettings.Schemas.Add( schema );
            
            docReader = XmlReader.Create( docLocation, docReaderSettings );

            doc = new XmlDocument();
            doc.Load( docReader );
                        
            Console.Out.WriteLine( "Loading document...done" );

            Console.Out.Flush();

        }

        private static void SchemaValidationHandler( object node, ValidationEventArgs args )
        {
            Console.Out.WriteLine( args.Message );
        }

        private static void DocValidationHandler( object node, ValidationEventArgs args )
        {
            Console.Out.WriteLine( args.Message );
        }
    }
}