We can easily hide / show the Quick Launch in SharePoint 2010

We can easily hide / show the Quick Launch items using the QuickLaunchEnabled property of a SPWeb object.. /*1st code block*/ SPSite spSite = new SPSite(SiteUrl); SPWeb spWeb = spSite.OpenWeb(); spWeb.QuickLaunchEnabled = false; spWeb.Update();

Similarly, we can iterate through each of the Quick Launch items to delete them from the web. /*2nd code block*/ SPSite spSite = new SPSite(SiteUrl); SPWeb spWeb = spSite.OpenWeb(); int i; for (i = spWeb.Navigation.QuickLaunch.Count - 1; i > 0;  i--) {     spWeb.Navigation.QuickLaunch.Delete(spWeb.Navigation.QuickLaunch[ i ]); } spWeb.Update();