Saving content of a treeview to a file and load it later

Question

In my C# WinForms program I have a treeview that only contains parent nodes (so, no childs) it is like a listbox but I needed it because of haveing differet properties of no

Answer 1

You can use BinaryFormatter to Serialize/Deserialize Nodes

    public static void SaveTree(TreeView tree, string filename)
    {
        using (Stream file = File.Open(filename, FileMode.Create))
        {
            BinaryFormatter bf = new BinaryFormatter();
            bf.Serialize(file, tree.Nodes.Cast<TreeNode>().ToList());
        }
    }

    public static void LoadTree(TreeView tree, string filename)
    {
        using (Stream file = File.Open(filename, FileMode.Open))
        {
            BinaryFormatter bf = new BinaryFormatter();
            object obj = bf.Deserialize(file);

            TreeNode [] nodeList = (obj as IEnumerable<TreeNode>).ToArray();
            tree.Nodes.AddRange(nodeList);
        }
    }