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