System.Object
   System.EventArgs
      C1.WPF.Chart.LegendItemFormatEventArgs
      C1.WPF.Chart.SeriesEventArgs
      System.ComponentModel.CancelEventArgs
         C1.Chart.BaseRenderEventArgs
            C1.WPF.Chart.RenderEventArgs
            C1.WPF.Chart.RenderNodeEventArgs
            C1.WPF.Chart.RenderSliceEventArgs
               C1.WPF.Chart.RenderPieDataLabelEventArgs
            C1.WPF.Chart.RenderSymbolEventArgs
               C1.WPF.Chart.RenderDataLabelEventArgs
   System.Windows.Threading.DispatcherObject
      System.Windows.DependencyObject
         C1.WPF.Chart.Axis
         C1.WPF.Chart.ChartOptions
         C1.WPF.Chart.ChartStyle
         C1.WPF.Chart.DataLabelBase
            C1.WPF.Chart.DataLabel
            C1.WPF.Chart.PieDataLabel
         C1.WPF.Chart.NormalCurve
         C1.WPF.Chart.PlotArea
         C1.WPF.Chart.Series
            C1.WPF.Chart.BoxWhisker
            C1.WPF.Chart.BreakEven
            C1.WPF.Chart.ErrorBar
            C1.WPF.Chart.Histogram
            C1.WPF.Chart.RadarSeries
            C1.WPF.Chart.RangedHistogram
            C1.WPF.Chart.TrendLine
            C1.WPF.Chart.Waterfall
         System.Windows.Media.Visual
            System.Windows.UIElement
               System.Windows.FrameworkElement
                  System.Windows.Controls.Control
                     C1.WPF.Chart.FlexChartBase
                        C1.WPF.Chart.C1FlexChart
                           C1.WPF.Chart.C1FlexRadar
                        C1.WPF.Chart.C1FlexPie
                           C1.WPF.Chart.C1Sunburst
                        C1.WPF.Chart.C1TreeMap

Reference

C1.WPF.FlexChart.4.6.2 Assembly