silverlight 4.0 - Using the return type IQueryable<TABLE_1> -

i new silverlight, many posts indicate using observablecollection best.

domainservice1 returns iqueryable type.

how work return type in silverlight side?

how convert/cast data returned observable collection?

the domainservices1.cs

public iqueryable<table_1> gettable_1()         {              return this.objectcontext.table_1;         } 

*the home.xaml.cs***

public home()         {             initializecomponent();              this.title = applicationstrings.homepagetitle;               web.domainservice1 dservice = new web.domainservice1();              entityquery<web.table_1> query=new entityquery<web.table_1>();              query = dservice.gettable_1query();              //convert result observablecollection              //bind grid item source          } 

the iqueryable not return results until enumerate collection. instance if wanted limit results of dservice.gettable_1query .where() could...

to object observable collection .tolist query this

observablecollection<table1> t=new observablecollection<table1>(query.tolist()); 

i think there little more have do(a loadoperation how mine) in learning stages of linq dynamic, other applications have had convert returned results observable collection; how did it. wrote exension .toobservablecollection