public void AddParticipantToWks(Workshop wks, Person p)
{
wks.AddParticipant(p);
if (wks.GetParticipants().Count >= (wks.MaxParticipants * 0.9))
{
if (ParticipantsLimitEvent != null)
{
ParticipantsLimitEvent(wks);
}
}
AddAttendance(wks, p);
}