public CalculatedColumn this[
	string ID
] { get; set; }

Public Property Item ( 
	ID As String
) As CalculatedColumn
	Get
	Set

public:
virtual property CalculatedColumn^ Item[String^ ID] {
	CalculatedColumn^ get (String^ ID) sealed;
	void set (String^ ID, CalculatedColumn^ value) sealed;
}

function get_Item(ID);
function set_Item(value);