C#

xmlStream = new FileStream("input.xml", FileMode.Open);
xsdStream = new FileStream("input.xsd", FileMode.Open);
XmlDocument xmlDocument = new XmlDocument();
xmlDocument.Load(xmlStream );
xmlDocument.Schemas.Add(null, XmlReader.Create(xsdStream ));
xmlDocument.Validate(new ValidationEventHandler(this.ValidationHandler));

private void ValidationHandler(object sender, ValidationEventArgs e)
{
// Do something
}

throw new SoapException();