public ActionResult xiazai(int id)
???????{
???????????DataTable dt = bll.chaxun(id);
???????????//获取文件名字
???????????var filename = dt.Rows[0]["SCName"];
???????????//完整路径
???????????var newname = Server.MapPath("/EXCEL/" + filename);
???????????//文件流
???????????FileStream fs=new FileStream(newname.ToString(),FileMode.Open);
???????????//数组
???????????byte[] bytes = new byte[(int)fs.Length];
???????????fs.Read(bytes, 0, bytes.Length);
???????????fs.Close();
???????????Response.Charset = "UTF-8";
???????????Response.ContentType = "application/octet-stream";
???????????Response.ContentEncoding = Encoding.Default;
???????????Response.AddHeader("Content-Disposition", "attachment;filename=" + Server.UrlEncode(filename.ToString()));
???????????Response.BinaryWrite(bytes);
???????????Response.Flush();
???????????Response.End();
?????????
???????????return View();
???????}
mvc文件下载
原文地址：http://www.cnblogs.com/shenghuotaiai/p/7827844.html