public partial class MainPage : ContentPage
{
	public MainPage()
	{
		InitializeComponent();
		this.chart.HandlerChanged += Chart_HandlerChanged;
	}

	private void Chart_HandlerChanged(object sender, EventArgs e)
	{
		this.UpdateChart();
	}

	private void UpdateChart()
	{
        var a = this.chart.Handler.PlatformView;
#if WINDOWS
        var platformChart = (Telerik.UI.Xaml.Controls.Chart.RadCartesianChart)a;
        var platformSeries = (Telerik.UI.Xaml.Controls.Chart.LineSeries)platformChart.Series[1];
        platformSeries.StrokeDashArray = new Microsoft.UI.Xaml.Media.DoubleCollection { 1, 1, 2, 1 };
#endif
#if ANDROID
		var platformChart = (Com.Telerik.Widget.Chart.Visualization.CartesianChart.RadCartesianChartView)a;
		var platformSeries = (Com.Telerik.Widget.Chart.Visualization.CartesianChart.Series.Categorical.LineSeries)platformChart.Series.Get(1);
		platformSeries.SetDashArray(new float[3] {1, 2, 1});
#endif
	}
}