Explicitly load related entities within entities - entity-framework

Question

I have object graph like the following:
Public ClassA
{
public int Id { get; set; }
public virtual ICollection<ClassB> ClassB_List { get; set; }
}
Public ClassB
{
public int Id { get; set; }
public virtual ICollection<ClassC> ClassC_List { get; set; }
}
Public ClassC
{
public int Id { get; set; }
}
Now what I would like to do is since I have disabled lazy load at the DBContext level, for a given ClassA instance, I would like to load allrelated entities (ClassBList and ClassCList).
I'm able to load the nested collection for ClassB_List using:
context.Entry(classA).Collection("ClassB_List").Load();
However, I don't know how to then load each child item within ClassB_List for ClassC_List without resorting to something rubbish like this:
classA.ClassB_List.ToList().ForEach(c => context.Entry(c).Collection("ClassC_List").Load());
Another way I know I found is use eager loading at the context using Include() :
var c = context.ClassA_list
.Include("ClassB_List.ClassC_List")
.ToList();
Which is fine for list of ClassA instance if I already had the property included within by DBContext model but I don't often want to do this and just want to use explicitly load.
Any ideas?

Answer 1

You have used the two ways to eager load:
Include
Load
if you want some flexibility you can do something like this:
var c = context.ClassA_list;
if (IWantTheRelatedTable)
{
c = c.Include("ClassB_List.ClassC_List");
}
var result = c.ToList();
You build an IQueryable, then when it has all the includes you need you execute it.