System.Object
   C1.Silverlight.DataGrid.Filters.DataGridTextFilterHelper
   System.Windows.DependencyObject
      C1.Silverlight.DataGrid.DataGridRow
         C1.Silverlight.DataGrid.Filters.DataGridFilterRow
      C1.Silverlight.DataGrid.Filters.C1AdvancedFiltersBehavior
      C1.Silverlight.DataGrid.Filters.C1FullTextSearchBehavior
      System.Windows.UIElement
         System.Windows.FrameworkElement
            System.Windows.Controls.Control
               C1.Silverlight.DataGrid.DataGridTextFilter
                  C1.Silverlight.DataGrid.Filters.DataGridComboBoxTextFilter
               C1.Silverlight.DataGrid.Filters.DataGridMultiLineCombinationsItem
               C1.Silverlight.DataGrid.Filters.DataGridMultiLineItem
                  C1.Silverlight.DataGrid.Filters.DataGridMultiLineDateTimeItem
                  C1.Silverlight.DataGrid.Filters.DataGridMultiLineNumericItem
                  C1.Silverlight.DataGrid.Filters.DataGridMultiLineTextItem
               System.Windows.Controls.ContentControl
                  C1.Silverlight.DataGrid.DataGridRowHeaderPresenter
                     C1.Silverlight.DataGrid.Filters.DataGridFilterRowHeaderPresenter
                  C1.Silverlight.DataGrid.Filters.DataGridContentFilter
                  C1.Silverlight.DataGrid.Filters.DataGridFilterItem
               System.Windows.Controls.ItemsControl
                  C1.Silverlight.DataGrid.Filters.DataGridFilterList
                  C1.Silverlight.DataGrid.Filters.DataGridMultiLineFilter
                     C1.Silverlight.DataGrid.Filters.DataGridMultiLineDateTimeFilter
                     C1.Silverlight.DataGrid.Filters.DataGridMultiLineNumericFilter
                     C1.Silverlight.DataGrid.Filters.DataGridMultiLineTextFilter
            System.Windows.Controls.Panel
               C1.Silverlight.DataGrid.Filters.DataGridFilterListPanel

Reference

C1.Silverlight.DataGrid.Filters.5 Assembly