GET Unique List from different classes using LINQ

Question

I have 2 classes with different properties

ClassA
    int Id
    int Name
    int Status

ClassB
    int ClassAId
    string Bprop1
    string Bprop2
    string Bprop3
    ...

I have List of ClassA and List of ClassB and i want to get a unique list of ClassA values with the condition

List where ClassA.Id is present with List on property ClassAId

Example:

// given
List<ClassA>  {{1,"a"},{2,"b"},{3,"c"},{4,"d"}} etc
Lisst<ClassB>  {{1,"aaa","ccc","aasdaf"},{3,"aaa","ccc","aasdaf"}}

// expected result
List<ClassA>  {{1,"a"},{3,"c"}}  

How can I apply a LINQ query for the same?

Answer 1

This should give you the expected output:-

List<ClassA> resultClassA = classAObj.Where(a => classBObj.Any(b => b.ClassAId == a.Id))
                                     .ToList();