public async Task <IActionResult> Download(string filename) { if (filename == null) { return(Content("filename not present")); } var path = Path.Combine( Directory.GetCurrentDirectory(), "wwwroot", filename); var memory = new MemoryStream(); using (var stream = new FileStream(path, FileMode.Open)) { await stream.CopyToAsync(memory); } memory.Position = 0; return(File(memory, _commonservices.GetContentType(path), Path.GetFileName(path))); }