Yes you can, but you have to make sure you are "foreaching" using the
correct enumerator. Below is some sample code that shows how the Enumerator
is implemented using the "new" key word on your own class. If you
instantiate your class and do a "foreach" on it, you will loop using the
enumerator that *you* created.

Note that if you do not implement your own enumerator you would be using the
one provided by the System.Collections.ObjectModel.Collection class (base
class of the BindingList class).

       // Create the class that inherits from BindingList.
       public class Abc<T> : System.ComponentModel.BindingList<T>
       {
           public new IEnumerator<T> GetEnumerator()
           {
               // Return *your* IEnumerator here.
           }
       }

       // foreach test.
       static void Main(string[] args)
       {
           Abc<string> myAbc = new Abc<string>();

           foreach (string str in myAbc)
           {
               // Here you are looping inside the enumerator you
implemented.
           }

           foreach (string str in
(System.Collections.ObjectModel.Collection<string>)myAbc)
           {
               // Here you are looping inside the enumerator implemented
               // by the base class
(System.Collections.ObjectModel.Collection)
           }
       }