Convert Nested Foreach to Linq

Question

I am trying to re-write the following using LINQ

foreach (WMCommon.Services.StakeOut.assembly ass in assemblies) 
{
  foreach (var agg in aggregate) 
  {
           


        

Answer 1

Try this:

assemblies.ForEach(a => a.quantity = (aggregate.Where(p => p.catagory.unitActn == a.unitActn && p.catagory.unitCode == a.unitCode && p.catagory.unitLength == a.unitLength).Select(s=>s.qty)));

But mind it it wouldn't be faster