Question

I have such relations:

class FirstParent {
   public SecondParent SecondRecord { get; set; }
}

class SecondParent {
   public IEnumerable<FirstParent> FirstRecords { get; set; }
}

class FirstChild1 : FirstParent {
   public String StrInFirstChild1{ get; set; }
}

class SecondChild1 : SecondParent {
   public String StrInSecondChild1{ get; set; }
}

class FirstChild2 : FirstParent {
   public String StrInFirstChild2{ get; set; }
}

class SecondChild2 : SecondParent {
   public String StrInSecondChild2{ get; set; }
}

Records related to class FirstChild1 are of type SecondChild1.
Records related to class FirstChild2 are of type SecondChild2.

When I write

var record = from ch in context.FirstParent.OfType<FirstChild1>() select ch.SecondRecord;

in result I also have SecondParent object.
What is happening? How to load SecondChild1 objects?

Answer 1

I found a resolution. I load records from all four tables and do join to collect needed information to anonymous object.