/// <summary>
/// Validates the DTO fields
/// </summary>
/// <returns>true when validation succeeds</returns>
public void Validate()
{
if (!Firstname.HasValue())
{
throw new InvalidPropertyValueException(nameof(Firstname), Firstname);
}
if (!Surname.HasValue())
{
throw new InvalidPropertyValueException(nameof(Surname), Surname);
}
if (!Email.IsEmailAddress())
{
throw new InvalidPropertyValueException(nameof(Email), Email);
}
if (!Contact.IsContactNumber())
{
throw new InvalidPropertyValueException(nameof(Contact), Contact);
}
if (DOB == null)
{
throw new InvalidPropertyValueException(nameof(DOB));
}
}
