Question

Given an object possibly containing an IEnumerable<T>, how would I check that an IEnumerable<T> property exists, and if it does, loop over all values in that IEnumerable<T> using reflection, for any T?

Answer 1

foreach (var property in yourObject.GetType().GetProperties())
{
    if (property.PropertyType.GetInterfaces().Contains(typeof(IEnumerable)))
    {
        foreach (var item in (IEnumerable)property.GetValue(yourObject, null))
        {
             //do stuff
        }
    }
}