public double this[
	int i,
	int j
] { get; set; }

Public Default Property Item ( 
	i As Integer,
	j As Integer
) As Double
	Get
	Set

public:
property double default[int i, int j] {
	double get (int i, int j);
	void set (int i, int j, double value);
}

member Item : float with get, set