保存Treeview选中节点到xml中，在窗体加载时，显示上次关闭时的状态

public class TreeNodes
    {
        private string path;

        public string Path
        {
            get { return path; }
            set { path = value; }
        }
     
       
    
        public void Save()
        {
            try
            {
                XmlSerializer xs = new XmlSerializer(typeof(TreeNodes));
                Stream stream = new FileStream("tree.xml",
                FileMode.Create, FileAccess.Write, FileShare.Read);
                xs.Serialize(stream,this);
                stream.Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }
        public TreeNodes Load()
        {
            try
            {
                if (File.Exists("tree.xml"))
                {
                    XmlSerializer xs = new XmlSerializer(typeof(TreeNodes));
                    Stream stream = new FileStream("tree.xml", FileMode.Open);
                    var v = xs.Deserialize(stream) as TreeNodes;
                    stream.Close();
                    return v;
                }
               
               
            }

            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);

            }
            return new TreeNodes();
        }
   
    }

 

 

tn = tn.Load();
            string path = tn.Path;
            if (path == null || path.Trim().Length < 1)
            {
                return;
            }
            string[] pathArray = path.Split(new char[] { '\\' }, StringSplitOptions.RemoveEmptyEntries);

            var nodes = treeView1.Nodes;
            foreach (var item in pathArray)
            {
                bool isSelected = false;
                for (int i = 0; i < nodes.Count; i++)
                {
                    if (nodes[i].Text.TrimEnd('\\') == item)
                    {
                        nodes[i].Expand();
                        treeView1.SelectedNode = nodes[i];
                        nodes = nodes[i].Nodes;
                        isSelected = true;
                        break;
                    }
                }
                if (isSelected != true)
                {
                    return;
                }

            }