public static void Main(string[] args)
 {
   Assignments myDataSet = new Assignments();
   myDataSet.ReadXml("c:\\temp\\tester\\test.xml",XmlReadMode.Auto);
   SoapBase64Binary sb = new SoapBase64Binary(myDataSet.Assignment[0].Payload);
   Console.WriteLine("The object in XSD format is {0}.",sb.ToString());
   Console.WriteLine();
   Console.WriteLine("The conclusion is: your XSD is incorrect...?");
   Console.WriteLine("Or possibly a different XmlReadMode would work...?");

 }