c# - Linq to entities and Hierarchical table -

i have table id , parentid columns nesting level 1(for now).
right load items this:

using (kentities ctx = new kentities()) {     ctx.kset.mergeoption = mergeoption.notracking;      var items = (from c in ctx.kset                  c.parentid == 0                  select new                  {                      title = c.title,                      id = c.id,                                                 subs = ctx.kset.where(o => o.parentid == c.id)                                                        }).tolist();   } 

the other option can choose set self-reference on table, entity expose self-navigation properties , can use load() load children (lazy loading?).

which approach preferred , why?

imho, prefer have done in example. call .tolist() cause know @ moment have data in memory, , don't have worry of problems can have lazy loading.

"it leaks persistent storage access different tiers via lazy loadable associations." taken link