public IActionResult Decode(string encoded) { string link = _repository.Decode(encoded); Uri uriResult; bool result = Uri.TryCreate(link, UriKind.Absolute, out uriResult) && (uriResult.Scheme == Uri.UriSchemeHttp || uriResult.Scheme == Uri.UriSchemeHttps); if (result) { return(Redirect(uriResult.AbsoluteUri)); } else { return(View("Bad")); } }