public TablesMapGenerator(int RecId)
{
Tables = new List <Table>();
_tablesMaps = null;
_recId = RecId;
using (ProjetSGBDEntities context = new ProjetSGBDEntities()) {
_clients = context.GetReservation(RecId).Where(res => res.IsValid == true).ToList();
_nbSeats = context.Reception.Where(rec => rec.ReceptionId == RecId).First().SeatsPerTable;
}
}