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                StringWriter sw = new StringWriter();
                sw.WriteLine("·ÃÎʹºÂòÂÊ");
                sw.WriteLine("ÅÅÐÐ\tÉÌÆ·Ãû³Æ\tÈËÆøÖ¸Êý\t¹ºÂò´ÎÊý\t·ÃÎʹºÂòÂÊ");
                int i = 0;
                foreach (ProductSaleInfo productSale in productSaleList)
                {
                    i = i + 1;
                    sw.WriteLine(i.ToString() + "\t" + productSale.Name.ToString() + "\t" + productSale.ViewCount.ToString() + "\t" + productSale.SaleCount.ToString() + "\t" + XWXCommon.ProductBuyRate(productSale.ViewCount.ToString(), productSale.SaleCount.ToString()));
                }
                sw.Close();
                Response.Clear();
                Response.Buffer = true;
                Response.Charset = "GB2312";
                Response.AppendHeader("Content-Disposition&