Is there a .NET collection interface that prevents adding objects?

Question

I have a class that maintains list of objects of another class. List of objects is a public property. I would like to prevent users from adding and removing objects directly

Answer 1

You can use ReadOnlyCollection - wrap your collection in this and return the ReadOnlyCollection to users of your class:

return new ReadOnlyCollection(innerCollection);

Or using the AsReadOnly method of the List class:

return innerCollection.AsReadOnly();

The IEnumerable interface will do what you need, as it only has one member GetEnumerator(), that will only let you iterate over items.