LINQ where clause with lambda expression having OR clauses and null values returning incomplete results

Question

the problem in short

we have a lambda expression used in the Where clause, which is not returning the \"expected\" result.

quick summary

Answer 1

Try writting the lambda with the same conditions as the delegate. like this:

  List analysisObjects = 
    analysisObjectRepository.FindAll().Where(
    (x => 
       (x.ID == packageId)
    || (x.Parent != null && x.Parent.ID == packageId)
    || (x.Parent != null && x.Parent.Parent != null && x.Parent.Parent.ID == packageId)
    ).ToList();