System.Object
   ISNet.WebUI.ISCollectionBase
      System.Collections.CollectionBase
         ISNet.WebUI.WebCombo.Cells
         ISNet.WebUI.WebCombo.Columns
         ISNet.WebUI.WebCombo.Rows
   ISNet.WebUI.ISNetControl
      System.Web.UI.WebControls.WebControl
         System.Web.UI.Control
            ISNet.WebUI.WebCombo.WebCombo
   ISNet.WebUI.NamedObjectBase
      ISNet.WebUI.WebUIBaseClass
         ISNet.WebUI.WebCombo.WebComboCell
         ISNet.WebUI.WebCombo.WebComboColumn
         ISNet.WebUI.WebCombo.WebComboRow
   ISNet.WebUI.WebCombo.PostBackAction
   ISNet.WebUI.WebCombo.Presets
   ISNet.WebUI.WebUIBaseClass
      ISNet.WebUI.WebCombo.ClientEvents
      ISNet.WebUI.WebCombo.LayoutSet
      ISNet.WebUI.WebCombo.LinkSettings
      ISNet.WebUI.WebCombo.MultipleSelectionSettings
      ISNet.WebUI.WebCombo.TextSet
      ISNet.WebUI.WebCombo.WebComboIntegrationSettings
      ISNet.WebUI.WebCombo.WebComboValueItem
   System.Drawing.Design.UITypeEditor
      ISNet.WebUI.WebCombo.FieldTypeEditor
   System.EventArgs
      ISNet.WebUI.WebCombo.BaseEventArgs
         ISNet.WebUI.WebCombo.DataSourceEventArgs
         ISNet.WebUI.WebCombo.LayoutEventArgs
         ISNet.WebUI.WebCombo.PostbackEventArgs
         ISNet.WebUI.WebCombo.RowEventArgs
         ISNet.WebUI.WebCombo.ValueChangedEventArgs

Reference

ISNet.WebUI.WebCombo Assembly