public IEnumerable <ValidationResult> Validate(ValidationContext validationContext)
{ //default value is today
if (HereSince.Equals(null))
{
HereSince = DateTime.Now;
}
else if (HereSince.CompareTo(DateTime.Now) > 0)
{
yield return(new ValidationResult(
$"Dogs cannot check-in later than today.",
new[] { "HereSince" }));
}
//birth date can be unknown
if (DateOfBirth.Equals(null))
{
}
//birth date can't be later thay today
if (DateOfBirth.CompareTo(DateTime.Now) > 0)
{
yield return(new ValidationResult(
$"birth date can't be later thay today.",
new[] { "DateOfBirth" }));
}
//Impossible for dog to be here faster then it's birth.
if (DateOfBirth.CompareTo(HereSince) > 0)
{
yield return(new ValidationResult(
$"Impossible for dog to be here faster then it's birth.",
new[] { "HereSince", "DateOfBirth" }));
}
}
public int CompareTo(object o)
{
if (o is Person person)
{
return(DateOfBirth.CompareTo(person.DateOfBirth));
}
throw new Exception("Невозможно сравнить два объекта");
}
public int CompareTo(object obj)
{
Student student = obj as Student;
if (student != null)
{
return(DateOfBirth.CompareTo(student.DateOfBirth));
}
else
{
throw new Exception("Невозможно сравнить два объекта");
}
}
public int CompareTo(Skier other)
{
if (ReferenceEquals(this, other))
{
return(0);
}
if (ReferenceEquals(null, other))
{
return(1);
}
var idComparison = Id.CompareTo(other.Id);
if (idComparison != 0)
{
return(idComparison);
}
var firstNameComparison = string.Compare(FirstName, other.FirstName, StringComparison.Ordinal);
if (firstNameComparison != 0)
{
return(firstNameComparison);
}
var lastNameComparison = string.Compare(LastName, other.LastName, StringComparison.Ordinal);
if (lastNameComparison != 0)
{
return(lastNameComparison);
}
var dateOfBirthComparison = DateOfBirth.CompareTo(other.DateOfBirth);
if (dateOfBirthComparison != 0)
{
return(dateOfBirthComparison);
}
var nationComparison = string.Compare(Nation, other.Nation, StringComparison.Ordinal);
if (nationComparison != 0)
{
return(nationComparison);
}
var profileImageComparison = string.Compare(ProfileImage, other.ProfileImage, StringComparison.Ordinal);
if (profileImageComparison != 0)
{
return(profileImageComparison);
}
return(string.Compare(Sex, other.Sex, StringComparison.Ordinal));
}
public int CompareTo(object obj)
{
Player that = (Player)obj;
return(DateOfBirth.CompareTo(that.DateOfBirth));
}
public int CompareTo(Human human)
{
return(DateOfBirth.CompareTo(human.DateOfBirth));
}