FlickrSync.PathInfo.LoadFromXPath C# (CSharp) Méthode

        public void LoadFromXPath(XPathNavigator nav)
        {
            nav.MoveToFirstChild();

            do
            {
                if (nav.Name == "Path") Path = XmlDecode(nav.Value);
                else if (nav.Name == "Open") Open = nav.ValueAsBoolean;
                else if (nav.Name == "ManualAdd") ManualAdd = nav.ValueAsBoolean;
            } while (nav.MoveToNext());
        }

        public void LoadFromXML(string xml)
        {
            XmlDocument xmldoc = new XmlDocument();

            xmldoc.LoadXml(xml);
            XPathNavigator    nav      = xmldoc.CreateNavigator();
            XPathNodeIterator iterator = nav.Select("/FlickrSync/SyncFolder");

            while (iterator.MoveNext())
            {
                SyncFolder     sf   = new SyncFolder();
                XPathNavigator nav2 = iterator.Current;
                sf.LoadFromXPath(nav2);

                DirectoryInfo dir = new DirectoryInfo(sf.FolderPath);
                if (!dir.Exists)
                {
                    if (FlickrSync.messages_level != FlickrSync.MessagesLevel.MessagesNone)
                    {
                        if (MessageBox.Show("Folder " + sf.FolderPath + " no longer exists. Remove from configuration?", "Warning", MessageBoxButtons.YesNo) == DialogResult.Yes)
                        {
                            FlickrSync.Log(FlickrSync.LogLevel.LogAll, sf.FolderPath + "marked for removal from configuration");
                            continue;
                        }
                        else
                        {
                            FlickrSync.Log(FlickrSync.LogLevel.LogAll, sf.FolderPath + "does not exists");
                        }
                    }
                }

                SyncFolders.Add(sf);
            }

            iterator = nav.Select("/FlickrSync/PathInfo");

            while (iterator.MoveNext())
            {
                PathInfo       pi   = new PathInfo();
                XPathNavigator nav2 = iterator.Current;
                pi.LoadFromXPath(nav2);

                DirectoryInfo dir = new DirectoryInfo(pi.Path);
                if (!dir.Exists)
                {
                    if (!pi.ManualAdd)
                    {
                        continue;
                    }

                    if (FlickrSync.messages_level != FlickrSync.MessagesLevel.MessagesNone)
                    {
                        if (MessageBox.Show("Folder " + pi.Path + " no longer exists. Remove from configuration?", "Warning", MessageBoxButtons.YesNo) == DialogResult.Yes)
                        {
                            FlickrSync.Log(FlickrSync.LogLevel.LogAll, "Path" + pi.Path + " marked for removal from configuration");
                            continue;
                        }
                        else
                        {
                            FlickrSync.Log(FlickrSync.LogLevel.LogAll, "Path" + pi.Path + " no longer exists");
                        }
                    }
                }

                PathInfoList.Add(pi);
            }
        }