Public Default Property Item( _
   ByVal index As Integer _
) As T

Dim instance As RelatedEntityList(Of T)
Dim index As Integer
Dim value As T
 
instance.Item(index) = value
 
value = instance.Item(index)

public T this[ 
   int index
]; {get; set;}

public:
property T^ default [int] {
   T^ get(int index);
   void set (int index, T^ value);
}