Question

Is there any solution to solve the problem with this cast example? I need to add a new element to the collection, so I have to solve it.

    IEnumerable enumerable;
    IEnumerable enumerable2;
    enumerable = new ObservableCollection<Something>();
    enumerable2 = new ObservableCollection<Object>();


    ICollection<Object> try = (ICollection<Object>)enumerable;      //Don’t work
    ICollection<Object> try2 = (ICollection<Object>)enumerable2;    //Work

Answer 1

I’m not sure 100% that this is what you mean, but have you tried this:

IEnumerable<Object> try3 = enumerable.Cast<Object>();

Ok, it didn’t work, how about dynamic typing:

dynamic var = new Something();
dynamic try1 = enumerable;      
try1.Add(var);