System.Xml.XmlDocument.GetElementById C# (CSharp) Method

        public virtual XmlElement GetElementById(string elementId)
        {
            if (_htElementIdMap != null)
            {
                ArrayList elementList = (ArrayList)(_htElementIdMap[elementId]);
                if (elementList != null)
                {
                    foreach (WeakReference elemRef in elementList)
                    {
                        XmlElement elem = (XmlElement)elemRef.Target;
                        if (elem != null
                            && elem.IsConnected())
                            return elem;
                    }
                }
            }
            return null;
        }

 public static double GetNewVersionNumberOfDzenClient()
 {
     XmlDocument doc = new XmlDocument();
     doc.Load("Configuration.xml");
     double temp = Convert.ToDouble(doc.GetElementById("dzenclient"));
     return temp;
 }