Invalid anonymous type member declarator in LINQ

Question

I have two entities. One is \"Students\" while another is \"Subjects\".

The details of the two entities is something like:

students { id, name}

subject         


        

Answer 1

This means that you need to name your anonymous type's properties that cannot be inferred

select new 
{
    s.name, 
    Count=s.subjects.Count(i => i.passed.Equals(true))
};

Usually, the property name is good enough, however you are using the Count method, so that property has no inherent name