public void CreateNewUser(User user)
{
if (string.IsNullOrWhiteSpace(user.Username))
{
throw new ArgumentException("You passed in an invalid parameter", "Username");
}
if (string.IsNullOrWhiteSpace(user.Password))
{
throw new ArgumentException("You passed in an invalid parameter", "Password");
}
if (string.IsNullOrWhiteSpace(user.FirstName))
{
throw new ArgumentException("You passed in an invalid parameter", "FirstName");
}
if (string.IsNullOrWhiteSpace(user.LastName))
{
throw new ArgumentException("You passed in an invalid parameter", "LastName");
}
//userList.Add(user);
userRepo.AddToList(user);
}