asp.net - add html list from behind code? -

i have database need turn list webpage. have data bound gridview in page_load function of behind code file. wondering how take grid data , create ul/li list it. here's function far:

    protected void page_load(object sender, eventargs e)     {          service1 myservice = new service1();          //use gridview store table data before building menu         gridview sites = new gridview();          sites.datasource = myservice.getallsites();         sites.databind();            foreach (gridviewrow siterow in sites.rows)         {              string itemname = siterow.cells[1].text;                        } 

also, know how make list expandable? clicking 1 list item cause div or open right below it, moving list items down bit make room?

what you've described sounds close asp.net treeview control

http://msdn.microsoft.com/en-us/library/d4fz6xk2(v=vs.80).aspx

adding tree:

treeview1.nodes.add(new treenode(site.name)); 

a pretty easy follow example here:

http://www.nullskull.com/q/10328363/treeview-in-aspnet-with-examples.aspx