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         protected void Button1_Click1(object sender, EventArgs e)
        {
            /*
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            string strFileName = "Èý²¿ÏÐÖÃÉ豸¹ÜÀíϵͳ²Ù×÷ÊÖ²áIEMS.ppt";
            Response.ContentType = "application/x-zip-compressed";
            //Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");
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            Response.AddHeader("Content-Disposition", "attachment;filename=" +Server.UrlPathEncode(strFileName));
           //Server.UrlPathEncode()½â¾öÎļþÃûµÄÂÒÂëÎÊÌâ.
           
            Response.TransmitFile(filename);
        }    //WriteFileʵÏÖÏÂÔØ
    protected void Button2_Click(object sender, EventArgs e)
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