Adding a Using Statement To Dispose Linq DataContext in a Compiled Query -

i using compiled queries in linq sql. pretty standard stuff this:

public static readonly func<mydatacontext,int,ienumerable<mytype>> getsomestuff =  compiledquery.compile<mydatacontext,int,ienumerable<mytype>> ( (datacontext,userid) => (from u in dc.tabletype  u.userid == userid  select u) ); 

then later calling this:

using(var c = new mydatacontext()) {  var qr = mycompiledqueriesclass.getsomestuff(c,12345); //etc.. } 

what move using statement inside compiled query i'm stuck best way this. ideas?