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¼ÙÉèÔÚ·þÎñÆ÷µÄ¸ùĿ¼ÏÂÓиöÃûΪDownloadµÄÎļþ¼Ð,Õâ¸öÎļþ¼Ð´æ·ÅһЩÌṩ¸øÒýÓóÌÐòÏÂÔصÄÎļþ..
    public void DownloadFile(string path, string name)
    {
        try
        {
            System.IO.FileInfo file = new System.IO.FileInfo(path);
            Response.Clear();
            Response.Charset = "GB2312";
            Response.ContentEncoding = System.Text.Encoding.UTF8;
            // Ìí¼ÓÍ·ÐÅÏ¢£¬Îª"ÎļþÏÂÔØ/Áí´æΪ"¶Ô»°¿òÖ¸¶¨Ä¬ÈÏÎļþÃû
            Response.AddHeader("Content-Disposition", "attachment; filename=" + Server.UrlEncode(name));
            // Ìí¼ÓÍ·ÐÅÏ¢£¬Ö¸¶¨Îļþ´óС£¬ÈÃä¯ÀÀÆ÷Äܹ»ÏÔʾÏÂÔؽø¶È
            Response.AddHeader("Content-Length", file.Length.ToString());
            // Ö¸¶¨·µ»ØµÄÊÇÒ»¸ö²»Äܱ»¿Í»§¶Ë¶ÁÈ¡µÄÁ÷£¬±ØÐë±»ÏÂÔØ
            Response.ContentType = "application/ms-excel";
            // °ÑÎļþÁ÷·¢Ë͵½¿Í»§¶Ë
            Response.WriteFile(file.FullName);
            // Í£Ö¹Ò³ÃæµÄÖ´ÐÐ
            //Response.End();    
            HttpContext.Current.ApplicationInstance.CompleteRequest();