public Matrix<T> this[
	IEnumerable<int> rowIndexes,
	Range columnRange
] { get; set; }

Public Default Property Item ( 
	rowIndexes As IEnumerable(Of Integer),
	columnRange As Range
) As Matrix(Of T)
	Get
	Set

public:
property Matrix<T>^ default[IEnumerable<int>^ rowIndexes, Range columnRange] {
	Matrix<T>^ get (IEnumerable<int>^ rowIndexes, Range columnRange);
	void set (IEnumerable<int>^ rowIndexes, Range columnRange, Matrix<T>^ value);
}

member Item : Matrix<'T> with get, set