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();

}