Get array of extra ticks for discrete axis. Use this method to provide additional ticks for axis. This method is called after you call NChart.ExtendData(). The ticks from the array returned are _added_ to the axis' array of ticks, so axis will have more data. The maximal length of ticks array is determined by PointsHistoryLength property of NChart. Due to performance reasons you won't have access to the newly created ticks through the Ticks property of the NChartValueAxis.

IReadOnlyList<string> ExtraTicks(
	NChartValueAxis axis
)

Function ExtraTicks ( 
	axis As NChartValueAxis
) As IReadOnlyList(Of String)

IReadOnlyList<String^>^ ExtraTicks(
	[InAttribute] NChartValueAxis^ axis
)