C# 读取DataTable使用Reader方式

private static void PrintDataTableWithReader(DataTable dt)
        {
            DataTableReader dr = dt.CreateDataReader();
            while(dr.Read())
            {
                int len = dr.FieldCount;
                for (int i = 0; i < len;i++ )
                {
                    System.Console.Write("{0}\t,",dr.GetValue(i));
                }
                System.Console.WriteLine();
            }
            dr.Close();
        }