System.Object
   System.Web.UI.Control
      System.Web.UI.TemplateControl
         System.Web.UI.UserControl
            Dundas.Charting.WebControl.Ajax.ColorSelectorDlgClass
               Dundas.Charting.WebControl.Ajax.ColorSelectorDlgClassControl
                  Dundas.Charting.WebControl.Ajax.ASP.ColorSelectorDlg
            Dundas.Charting.WebControl.Ajax.FontSelectorDlgClass
               Dundas.Charting.WebControl.Ajax.FontSelectorDlgClassControl
                  Dundas.Charting.WebControl.Ajax.ASP.FontSelectDlg
            Dundas.Charting.WebControl.Ajax.PropertyPageBase
               Dundas.Charting.WebControl.Ajax.PropertyPages3DClass
                  Dundas.Charting.WebControl.Ajax.PropertyPages3DClassControl
                     Dundas.Charting.WebControl.Ajax.ASP.PropertyPages3D
               Dundas.Charting.WebControl.Ajax.PropertyPagesAppearanceClass
                  Dundas.Charting.WebControl.Ajax.PropertyPagesAppearanceClassControl
                     Dundas.Charting.WebControl.Ajax.ASP.PropertyPagesAppearance
               Dundas.Charting.WebControl.Ajax.PropertyPagesAxisClass
                  Dundas.Charting.WebControl.Ajax.PropertyPagesAxisClassControl
                     Dundas.Charting.WebControl.Ajax.ASP.PropertyPagesAxis
               Dundas.Charting.WebControl.Ajax.PropertyPagesChartClass
                  Dundas.Charting.WebControl.Ajax.PropertyPagesChartClassControl
                     Dundas.Charting.WebControl.Ajax.ASP.PropertyPagesChart
               Dundas.Charting.WebControl.Ajax.PropertyPagesErrorBarClass
                  Dundas.Charting.WebControl.Ajax.PropertyPagesErrorBarClassControl
                     Dundas.Charting.WebControl.Ajax.ASP.PropertyPagesErrorBar
               Dundas.Charting.WebControl.Ajax.PropertyPagesFormulasClass
                  Dundas.Charting.WebControl.Ajax.PropertyPagesFormulasClassControl
                     Dundas.Charting.WebControl.Ajax.ASP.PropertyPagesFormulas
               Dundas.Charting.WebControl.Ajax.PropertyPagesLabelClass
                  Dundas.Charting.WebControl.Ajax.PropertyPagesLabelClassControl
                     Dundas.Charting.WebControl.Ajax.ASP.PropertyPagesLabel
               Dundas.Charting.WebControl.Ajax.PropertyPagesLegendClass
                  Dundas.Charting.WebControl.Ajax.PropertyPagesLegendClassControl
                     Dundas.Charting.WebControl.Ajax.ASP.PropertyPagesLegend
            Dundas.Charting.WebControl.Ajax.PropertyPagesClass
               Dundas.Charting.WebControl.Ajax.PropertyPagesClassControl
                  Dundas.Charting.WebControl.Ajax.ASP.PropertyPages

Reference

Dundas.SharePoint.Charting.WebParts Assembly