DataSet ds = new DataSet();
DataTable emp = new DataTable("Employees");
DataTable div = new DataTable("Division");
emp.Columns.Add("LastName");
emp.Columns.Add("FirstName");
emp.Rows.Add(new Object[] {"Jones", "Marianne"});
emp.Rows.Add(new Object[] {"Fieldes", "Anna"});
div.Columns.Add("Section");
div.Columns.Add("Specialty");
div.Rows.Add(new Object[] {"Finance", "Taxes"});
div.Rows.Add(new Object[] {"Mergers", "Legal"});
ds.Tables.AddRange(new DataTable[] {emp, div});
FarPoint.Win.Spread.Model.DefaultSheetDataModel dataModel = new FarPoint.Win.Spread.Model.DefaultSheetDataModel(5, 5);
dataModel.DataSource = ds;
dataModel.DataMember = "Division";
fpSpread1.ActiveSheet.Models.Data = dataModel;
string fileName = "D:\\Temp\\myser.xml";
System.IO.Stream stream = System.IO.File.Open(fileName, System.IO.FileMode.Create);
System.Xml.XmlTextWriter writer = new System.Xml.XmlTextWriter(stream, System.Text.Encoding.UTF8);
writer.Formatting = System.Xml.Formatting.Indented;
writer.Indentation = 2;
writer.WriteStartDocument();
writer.WriteStartElement("DataModel");
dataModel.Serialize(writer, true);
writer.WriteEndElement();
writer.WriteEndDocument();
writer.Close();