Question

I have following classes in my project.

[Serializable]
public class BaseEntityCollection<T> : List<T> where T : BaseEntity, new()
{

    protected BaseEntityCollection()
    {
    }

}

[Serializable]
public abstract class BaseEntity
{
    protected BaseEntity()
    {
    }
}


public class MyClassCollection : BaseEntityCollection<MyClass>
{
}

---

Problem Area

MyClassCollection objList = 
MyClassName.MyFunctionName().OrderByDescending(i => i.MyPropertyName);

This line is giving compilation error.

Cannot implicitly convert type System.LinQ.IOrderedEnumerable<MyClass>
to MyClassCollection. An implicit conversion exists(are you missing a
cast?)

EDIT

I don’t have the privilege to change the Architecture design.

Answer 1

It’s not really clear why you’d expect that to work, but you could use:

MyClassCollection objList = new MyClassCollection();
objList.AddRange(MyClassName.MyFunctionName()
                            .OrderByDescending(i => i.MyPropertyName));

Personally I dislike deriving new collections from List<T> in the first place, and also deriving non-generic classes from generic classes just to pin the type arguments, but if that’s the architecture you’ve got to live with…