MVC下载文件方式

方式一：

public FileStreamResult DownFile(string filePath, string fileName)        {            string absoluFilePath = Server.MapPath(System.Configuration.ConfigurationManager.AppSettings["AttachmentPath"] + filePath);            return File(new FileStream(absoluFilePath, FileMode.Open), "application/octet-stream", Server.UrlEncode(fileName));        }

 

方式二：

public ActionResult DownFile(string filePath, string fileName)        {            filePath = Server.MapPath(System.Configuration.ConfigurationManager.AppSettings["AttachmentPath"] + filePath);            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("UTF-8");            Response.ContentType = "application/octet-stream";            Response.AddHeader("Content-Disposition", "attachment; filename=" + Server.UrlEncode(fileName));            Response.BinaryWrite(bytes);            Response.Flush();            Response.End();            return new EmptyResult();        }

 

View调用：

<a href="/Document/DownFile?filePath=@item.Value&fileName=@item.Key">下载</a>