Load a XSD string to XMLReaderSettings for validation

using System;
using System.Collections.Generic;
using System.Xml;
using System.Xml.Schema;
 
public class XmlValidator
{
 
    private List<string> _validationErrors = new List<string>();
 
    /// <summary>
    /// Get any error messages that were found validating the XML document against
    /// an XSD schema document.
    /// </summary>
    public List<string> ValidationErrors
    {
        get { return _validationErrors; }
    }
 
    public void ValidateXmlAgainstSchema(string xmlFileName, string xsdFileName)
    {
        using (XmlReader xsdReader = XmlReader.Create(xsdFileName))
        {
            // Read the schema from a file.
            XmlSchema schema = XmlSchema.Read(xsdReader, OnValidationEvent);
 
            // Setup the XmlReader for schema validation.
            XmlReaderSettings settings = new XmlReaderSettings();
            settings.ValidationType = ValidationType.Schema;
            settings.ValidationFlags = XmlSchemaValidationFlags.ReportValidationWarnings;
            settings.ValidationEventHandler += new ValidationEventHandler(OnValidationEvent);
 
            // Add the schema document.
            settings.Schemas.Add(schema);
 
            // Read each element of the document.  Any errors will raise a ValidationEvent.
            using (XmlReader reader = XmlReader.Create(xmlFileName, settings))
            {
                while (reader.Read())
                { }
            }
        }
    }
 
    private void OnValidationEvent(object sender, ValidationEventArgs e)
    {
        _validationErrors.Add(e.Message);
    }
 
}