>

>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...?");
>
> }
>

Lisa,

Thanks for testing the project and for your time! Actually, XSD is correct. Because I created the hexBinary sample data myself. This is what seems to be happening (and I couldn't find any documentation on it). ReadXML converts the hexBinary data to Base64Binary before it is stored in the byte[]. Of course, SoapHexBinary is expecting a hexBinary array, thus the saved string failes. If you write the xml and xsd to files from the dataset using WriteXml method, the Payload element is saved as Base64Binary type.

Again, I appreciate you taking the time and making the contribution,