Question

how do i use the second expression to select only those with ID from the first?

 var list1= from x in objects select x.id;


 results=results.Where(r=>r.id==  ????  )  

I want the results to be only those with id from listA

tia

EDIT:i stand corrected, there was another issue causing problem which i will ask about separately.

Answer 1

A bit of a guess (haven’t tried running it), but:

var filteredResults = from obj in objects 
                      join result in results on obj.id equals result.id
                      select result;

Note that this should replace both the lines of code you have in your question.