newbie: How to use WriteXmlSchema?

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I must be missing something simple. I want to serialize a DataSet to local disk when my .NET 2.0 WinForms app closes, and deserialize the DataSet when the app reopens.

I use this code to serialize my DataSet:

XmlSerializer ser = new XmlSerializer(typeof(DataSet));
TextWriter writer = new StreamWriter(xmlFile);
ser.Serialize(writer, projectData);
projectData.WriteXmlSchema(xmlSchema); //must this be written every time?
writer.Close();

Here are the results:

<?xml version="1.0" encoding="utf-8"?>
<DataSet>
<xs:schema id="ProjectData" xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema"; xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
<xs:element name="ProjectData" msdata:IsDataSet="true"; msdata:UseCurrentLocale="true";>
<xs:complexType>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="TableProject">
<xs:complexType>
<xs:sequence>
<xs:element name="Project_ID" msdata:AutoIncrement="true"; type="xs:int" />
etc.
etc.
etc.

and this code to deserialize it:

projectData = new DataSet();
StringReader xmlReader = new StringReader(xmlFile);
projectData.ReadXml(xmlReader);
xmlReader.Close();

But the deserialization code barfs on the first line of the xml file.

I believe I am missing some namespace reference to the xsd file, or something like that. How can I adjust my serialization code to include the proper information/formatting in the xml file? Do I need to write the schema to disk first? I want to be able to programmatically recreate the xmlFile and the xsdSchema whenever I want (they will always have the same definition, it's just that the files may get deleted and need to be recreated).

Thanks in advance.


.

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