I\'d like to have a class \"A\" with a (for example) SortedList collection \"SrtdLst\" property, and inside this class \"A\" allow the addition or subtraction of \"SrtdLst\" ite
If the keys are known outside of the class then you can add a ChangeItem(key, newValue) and ReadItem(key) to your wrapper class. Then keep the SortedList private to the class.