Casting of Generic List to a Class derived from a List

Question

I created a class derived from List. However when I tried casting the class to another List object I get a runtime error. My code is similar to the one posted below:

Answer 1

try this

public class CategoryObjCollection:List
{
   public CategoryObjCollection(IEnumerable items) : base(items){}
}


cat = new CategoryObjCollection(qry);