public void CreateComment(int caseId, int personId, string text)
{
if (caseId <= 0)
{
throw new DoesNotExistException(typeof(Case));
}
if (personId <= 0)
{
throw new DoesNotExistException(typeof(Person));
}
if (String.IsNullOrEmpty(text))
{
throw new ArgumentException("Text can not be empty.");
}
commentData.CreateComment(caseId, personId, text);
}