c# - LINQ- to retrieve the third layer list of objects from a list which contains three layers -


i have class structure in following.

   categorya    {          categoryb          {               categoryc               {                }          }     }

i have linq query list of objects.

  var ls = categorya.categoryb.where(x => x.categorybobjectid == someid);

this returns list of categoryb objects.

and want categoryc objects.

 var ls2= ls.where(x=>x.any(y=>y.categorycobjectid==someanotherid))

but ls2 returns categoryb objects.

what want list of categoryc objects fulfilling condition specified.

anyone can me change linq query accordingly ?

use selectmany.

var data = categorya.categoryb     .where(b => b.categorybobjectid == somebid)     .selectmany(b => b.categoryc)     .where(c => c.categorycobjectid == somecid)     .tolist();

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