Casting an object to IEnumerable where T is not known

Question

I am trying to play with Reflection and ran into the following situation.

In the following code, let\'s assume that the \'obj\' can be of types IEnumerable<>

Answer 1

Well, since you don't know the actual type of the items until runtime, you don't need to use the generic IEnumerable interface; just use the non-generic one, IEnumerable (the generic one inherits from it):

private void WriteGenericCollection(object obj)
{
    IEnumerable enumerable = (IEnumerable)obj;
    foreach(object item in enumerable)
    {
        ...
    }
}