LINQ2SQL Stack overflow - asp.net

Question

I am getting a stack overflow with the following code. I know what the problem is, that it executes all "GetAllPages" in the
Children = new LazyList<Page>(from p in GetAllPages(language)
where p.ParentPage == s.Id
select p)
before it adds the p.ParentPage == s.Id
private IQueryable<Page> GetAllPages(string language)
{
return from s in context.Pages
where (from c in GetAllContent()
where c.PageId == s.Id &&
c.Language.ToLower() == language.ToLower()
select c).Any()
let contents = (from c in GetAllContent()
where c.PageId == s.Id
select c)
select new Page()
{
Id = s.Id,
SiteId = s.SiteId,
Type = s.Type,
Template = s.Template,
ParentPage = s.ParentPage,
Visible = s.Visible,
Order = s.Order,
Contents = contents.ToList(),
Children = new LazyList<Page>(from p in GetAllPages(language)
where p.ParentPage == s.Id
select p)
};
}
How can i do this, correctly?
UPDATE:
The reason behind the code is that, i have a tree structured menu, where one menu item can have 0 to many child items.
The language part can be skipped, but my site support multiple languages, and with the language parameters do i only want menu items there have a content of the given language.

Answer 1

From the moment that you call this GetAllPages(language), and then call it again with out change the language you get 100% stack overflow.
You need to get something that is different, not the same ! and your only parameter is the language and this is not change.
private IQueryable<Page> GetAllPages(string language)
{
....
Children = new LazyList<Page>(from p in GetAllPages(language) // <-- here you
// call him self again with the same parametre.
// Your function is going to call him self asking the same think
// This is bring the stack overflow
// When you make call to the same function you need some how
// to get different results with some different parameter.