public string ChangePassword(int userID, string oldPassword, string newPassword) { try { tblUser user = unitOfWork.TblUserRepository.GetByID(userID); if (HashPassword.CompareHash(oldPassword, user.Password)) { user.Password = HashPassword.Genaratehash(newPassword); unitOfWork.TblUserRepository.Update(user); unitOfWork.Save(); return("SUCCESS"); } else { return("WOP"); } } catch (Exception ex) { return("UE"); } }