List in where clause in ASP.net - asp.net

Question

Hello I am a beginner in ASP.NET
I have a variable checklistsss which was the list of my CheckList. here is the code:
var checkListss = (from u in _userManager.ClearanceCheckListRepository.GetQueryable().Where(x => x.ClearanceId == userId.ClearanceId) select new { clearanceCheckListId = u.ClearanceCheckListId }).ToList();
Now, I want the variable checkListss will put in the where clause at this code:
var due = from checkListsddd in _userManager.DueRepository.GetQueryable().Where(x => x.ClearanceCheckListId == checkListss) select new { Item = checkListsddd.Label, Action = checkListsddd.Action };
to output the due variable in this code
var checkList = from checkLists in _userManager.ClearanceCheckListRepository.GetQueryable().Where(x => x.ClearanceId == userId.ClearanceId) select new { ClearanceSignatoryId = checkLists.ClearanceSignatoryId, ClearanceCheckListId = checkLists.ClearanceCheckListId, Item = checkLists.Item, Action = checkLists.Action, Due = due };
take note that the checkListss will output multiple checkListId
I dont know how to do this in asp.net
thank you for your answers

Answer 1

Without some more details I can only guess at the types but I think what you are missing is using Enumerable.Contains to check if the ID is in checkListss. Something like:
var checkListss = (from u in _userManager.ClearanceCheckListRepository.GetQueryable().Where(x => x.ClearanceId == userId.ClearanceId) select u.ClearanceCheckListId).ToList();
var due = from checkListsddd in _userManager.DueRepository.GetQueryable().Where(x => checkListss.Contains(x.ClearanceCheckListId)) select new { Item = checkListsddd.Label, Action = checkListsddd.Action };
Note that I changed checkListss to be a list of the Id type instead of a list of an anonymous type.
As a side note the mixing of the LINQ fluent and query syntax is a bit confusing to look at (subjectively) so I would stick to the fluent syntax more like:
var checkListss = _userManager.ClearanceCheckListRepository.GetQueryable()
.Where(x => x.ClearanceId == userId.ClearanceId)
.Select(x => ClearanceCheckListId)
.ToList();
var due = _userManager.DueRepository.GetQueryable()
.Where(x => checkListss.Contains(x.ClearanceCheckListId))
.Select(x => new { Item = x.Label, Action = x.Action })
.ToList();