System.Object
   System.Drawing.Design.UITypeEditor
      ESRI.ArcGIS.ADF.Tasks.Design.Editors.FieldsCollectionEditor
      ESRI.ArcGIS.ADF.Tasks.Design.Editors.GPTaskDefinitionEditor
      ESRI.ArcGIS.ADF.Tasks.Design.Editors.QueryAttributesEditor
   System.EventArgs
      ESRI.ArcGIS.ADF.Tasks.Design.Editors.FieldsCollectionEditorEventArgs
   System.MarshalByRefObject
      System.ComponentModel.Component
         System.Windows.Forms.Control
            System.Windows.Forms.ScrollableControl
               System.Windows.Forms.ContainerControl
                  System.Windows.Forms.Form
                     ESRI.ArcGIS.ADF.Tasks.Design.Editors.FieldsCollectionEditorForm
                     ESRI.ArcGIS.ADF.Tasks.Design.Editors.FindAddressPropertiesEditor
                     ESRI.ArcGIS.ADF.Tasks.Design.Editors.FormEntryEditorForm
                     ESRI.ArcGIS.ADF.Tasks.Design.Editors.GPTaskDefinitionEditorForm
                     ESRI.ArcGIS.ADF.Tasks.Design.Editors.QueryAttributesEditorForm
                     ESRI.ArcGIS.ADF.Tasks.Design.Editors.QueryAttributesPropertiesEditor
                     ESRI.ArcGIS.ADF.Tasks.Design.Editors.SearchAttributesPropertiesEditor
                  System.Windows.Forms.UserControl
                     ESRI.ArcGIS.ADF.Tasks.Design.Editors.FieldsCollectionEditorControl
                     ESRI.ArcGIS.ADF.Tasks.Design.Editors.QueryAttributesEditorControl

Reference

ESRI.ArcGIS.ADF.Tasks Assembly