Question

is any menu like treeview (open\hide each node), but after postback it restore the state ?

Answer 1

You can use the jquery treeview plugin, here is the demo of that.

Update based on comments:

You can add styling like this. Create a stylesheet file like whatever.css and include in page where the treeview is used. Put this code in that stylesheet.

<style type="text/css">
.file,.folder
{
  font-family: 'Arial Black';
}
</style>