Restrict content types and related page layouts on list pages new button

This is one of the most recurrent tasks... dealing with pages list.
You created your pages list content types, associated page layouts to those content types, and customers want to use only those content type and page layouts or simply.
Ok, let's assume you have Example 04 deployed (if  it's your first time on this blog, download VLibs here), this is what you see in Pages list.

The key to accomplish this task is divide-et-impera, so what about the new page menu?
Work on this property

IList<SPContentType> contentTypeInstances2Show = ...
pagesList.RootFolder.UniqueContentTypeOrder = contentTypeInstances2Show;
pagesList.RootFolder.Update();

Assigning a  SPContentType list to UniqueContentTypeOrder, we give the order of the content type available for creating, and we can also exclude some of them from the menu.

The second step is to make a selection of page layouts available, the method is:

PublishingWeb publishingWeb = PublishingWeb.GetPublishingWeb(web); 
PageLayout[] pageLayouts = publishingWeb.GetAvailablePageLayouts();

PageLayout[] pageLayouts2Show = ...
publishingWeb.SetAvailablePageLayouts(pageLayouts2Show .ToArray(), false);

So you have first to select content type related page layouts, just querying the publish website.
And this is what we will get

New document menu

Available page layouts

If you need the code, as usual this is the link. Go get it! and have a look at Example 06 ;) .