Gets the element key for a specified configuration element when overridden in a derived class.
            
| C# | Visual Basic | Visual C++ | J# | 
protected abstract Object GetItemKey( T item )
Protected MustOverride Function GetItemKey ( _ item As T _ ) As Object
protected: virtual Object^ GetItemKey( T item ) abstract
protected abstract Object GetItemKey( T item )
- item (T)
 - The collection item to return the key for
 
An value that acts as the key for the specified collection item
