public ActionResult DoctorIndex([FromForm] string searchString) { try { Regex regex = new Regex("[0-9]"); List <Patient> patient; if (regex.IsMatch(searchString)) { patient = PatientTable.GetPatientByPesel(System.Convert.ToInt32(searchString)); } else { patient = PatientTable.GetPatientBySurname(searchString); } if (patient.Count == 0) { return(View()); } else { return(RedirectToAction("DoctorView", "Doctor", patient[0])); } } catch { return(View()); } }