private static void newFolder_Click(object sender, EventArgs e)
{
ToolStripItem menuItem = (ToolStripItem)sender;
var node = (FolderNode)menuItem.OwnerItem.Owner.Tag;
var dir = node.TemplateFolder.AddNewFolder();
var newNode = new FolderNode(dir);
node.Nodes.Add(newNode);
node.Expand();
newNode.EditLabel();
}
