代码如下, public ActionResult Download(string fName,string fPath)
        {
            string fileName = fName; 
            string filePath = fPath;             FileStream fs = new FileStream(filePath, FileMode.Open);
            byte[] bytes = new byte[(int)fs.Length];
            fs.Read(bytes, 0, bytes.Length);
            fs.Close();
            Response.Charset = "UTF-8";
            //Response.ContentEncoding = System.Text.Encoding.GetEncoding("");
            Response.ContentType = "application/octet-stream";            Response.AddHeader("Content-Disposition", "attachment; filename=" + fileName);
            Response.BinaryWrite(bytes);
            Response.Flush();
            Response.End();
            return new EmptyResult();
        }
测了一下,下载文件最大只能是100多M的,如何实现无限制大小的文件下载!