//Response.AppendHeader("Content-Disposition", "attachment;filename=dayReport" + flag + ".xls");

            //Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");

            Response.Clear();

            Response.Buffer = true;

            //Response.Buffer = true;

            Response.AppendHeader("content-Disposition", "attachment;filename=" + DateTime.Now.ToString("yyyy-mm-dd") + ".xls");

            //Response.AppendHeader("Content-Disposition","attachment;filename="+DateTime.

            //Now.ToString("yyyyMMdd")+".xls");

            Response.ContentEncoding = System.Text.Encoding.UTF8;

            Response.ContentType = "application/ms-excel";

            this.EnableViewState = false;