public int IndexOf(
	string searchText,
	int startIndex,
	int count,
	StringComparison comparisonType
)

Public Function IndexOf ( _
	searchText As String, _
	startIndex As Integer, _
	count As Integer, _
	comparisonType As StringComparison _
) As Integer

public:
virtual int IndexOf(
	String^ searchText, 
	int startIndex, 
	int count, 
	StringComparison comparisonType
) sealed