asp.net MVC FileResult在IE下异常的解决办法

var encoding = System.Text.Encoding.UTF8;
Response.Charset = encoding.WebName;
Response.HeaderEncoding = encoding;

return File(path, "application/octet-stream", ((Request.Browser.Browser == "IE") ? HttpUtility.UrlEncode(filename, encoding) : filename));

只要这样就行了