System.Object
   System.EventArgs
      System.Windows.Forms.MouseEventArgs
         Xceed.Editors.DayMouseEventArgs
      System.Windows.Forms.PaintEventArgs
         Xceed.Editors.PaintDayEventArgs
         Xceed.Editors.PaintWeekDayNameEventArgs
      Xceed.Editors.CalculatorErrorEventArgs
      Xceed.Editors.CalculatorFunctionEventArgs
      Xceed.Editors.CurrentDateChangedEventArgs
      Xceed.Editors.DayEventArgs
      Xceed.Editors.FormatTitleButtonTextEventArgs
      Xceed.Editors.SelectedDateChangedEventArgs
      Xceed.Editors.ValidatingTextEventArgs
   System.MarshalByRefObject
      System.ComponentModel.Component
         System.Windows.Forms.Control
            System.Windows.Forms.ScrollableControl
               System.Windows.Forms.ContainerControl
                  Xceed.UI.ThemedContainerControl
                     Xceed.Editors.WinCalendar
               Xceed.UI.ThemedScrollableControl
                  Xceed.Editors.WinButtonContainerControl
                     Xceed.Editors.WinTextBoxBase
                        Xceed.Editors.WinTextBox
                           Xceed.Editors.WinDatePicker
                           Xceed.Editors.WinNumericTextBox
                  Xceed.Editors.WinPanel
            System.Windows.Forms.TextBoxBase
               System.Windows.Forms.TextBox
                  Xceed.Editors.TextBoxArea
                     Xceed.Editors.DatePickerTextBoxArea
                     Xceed.Editors.NumericTextBoxArea
            Xceed.UI.ThemedControl
               Xceed.Editors.WinButton
               Xceed.Editors.WinCalculator
               Xceed.Editors.WinCheckBox
               Xceed.Editors.WinScrollBar
                  Xceed.Editors.WinHorizontalScrollBar
                  Xceed.Editors.WinVerticalScrollBar
   System.ValueType
      Xceed.Editors.Margins
   Xceed.Editors.BorderInfo
   Xceed.Editors.ButtonType
   Xceed.Editors.CalculatorButtonAppearance
   Xceed.Editors.CalculatorButtonStyle
   Xceed.Editors.DaysBorders
   Xceed.Editors.FormulaBoxAppearance
   Xceed.Editors.Licenser
   Xceed.Editors.MonthHeader
   Xceed.Editors.StringRenderStyle
      Xceed.Editors.DayRenderStyle
      Xceed.Editors.WeekDayNameRenderStyle
   Xceed.Editors.WeekDaysHeader
   Xceed.Editors.WinButtonCollection
   Xceed.UI.UIState
      Xceed.Editors.CalendarDayUIState
   Xceed.Utils.Collections.ListBase
      Xceed.Editors.CalculatorButtonStyleList

Reference

Xceed.Editors.v2.6 Assembly