private void PrintRows(DataSet myDataSet){
   // For each table in the DataSet, print the values of each row.
 
   foreach(DataTable thisTable in myDataSet.Tables)
   {
      // For each row, print the values of each column.
      foreach(DataRow myRow in thisTable.Rows)
      {
         foreach(DataColumn myCol in thisTable.Columns)
         {
            Console.WriteLine(myRow[myCol]);
         }
      }
   }
}