public ChartBorder MarkerBorder {get; set;}
This property provides a way to customize the marker border for an individual data point in the series.
A value of null implies that the marker border is not explicitly set on this data point, and should inherit the value from it's associated Series.
Use the Series.MarkerBorder property to customize the border for all markers in the series.
Target Platforms: Android 4.4+, iOS 8+
Development Environments: Visual Studio 2015+, Visual Studio for Mac Preview, Xamarin for Visual Studio 4.2+