collector.cs

private static List<Element> Collector(Element e, Dictionary<string, Element> OutElements)
        {
            double count = 0;
            List<Element> elements = e.GetElementConnectedWith();
            foreach (Element item in elements)
            {
                if (OutElements.ContainsKey(item.Id.ToString()))
                {
                    count += 1;
                }
                else
                {
                    OutElements[item.Id.ToString()] = item;
                    Collector(item, OutElements);
                }
            }
            if (Math.Abs(count - elements.Count) < 0.0001)
            {
                return new List<Element>(OutElements.Values);
            }
            return new List<Element>(OutElements.Values);
        }