sample-domain.cs

public class Encounter
{
    string patientName;
	
    DateTime birthDate;

    int ageInYears;

    DateTime timeOfAdmission;

    WardHistory wardHistory;

    bool currentlyAdmitted;

    public void AdmitPatient(string patientName, DateTime birthDate, int ageInYears, DateTime timeOfAdmission, int wardNumber)
    {
		if (currentlyAdmitted)
		{
			throw new DomainException("Patient is already admitted");
		}

		Raise(new PatientAdmitted(patientName, birthDate, ageInYears, timeOfAdmission, wardNumber));
	}

	public void MarkPatientAsTreated()
	{
		if (!currentlyAdmitted)
		{
			throw new DomainException("Cannot treat a patient that is not admitted");
		}
		    
		Raise(new PatientMarkedAsTreated());
	}

	public void TransferPatient(int toWardNumber)
	{
		if (!currentlyAdmitted)
		{
			throw new DomainException("Cannot transfer a patient that is not admitted");
		}

		if (wardHistory.Current.WardNumber == toWardNumber)
		{
			throw new DomainException("Cannot transfer a patient to the ward they are currently on");
		}
		    
		Raise(new PatientTransfered(toWardNumber));
	            
	}

	public void DischargePatient()
	{
		if (!currentlyAdmitted)
		{
			throw new DomainException("Cannot discharge a patient that is not admitted");
		}
		    
		Raise( new PatientDischarged());
	}
}