public IActionResult DownloadFile(string path) { byte[] fileBytes = _browser.DownloadFile(path); FileExtensionContentTypeProvider provider = new FileExtensionContentTypeProvider(); string contentType; string fileName = Path.GetFileName(path); if (!provider.TryGetContentType(fileName, out contentType)) { contentType = "application/octet-stream"; } ContentDisposition cd = new ContentDisposition { FileName = fileName, Inline = false }; Response.Headers.Add("Content-Disposition", cd.ToString()); Response.Headers.Add("X-Content-Type-Options", "nosniff"); return(File(fileBytes, contentType, fileName)); }