Common Add custom tool
Common_AddCustomTool_VBNet\App_Code\IBaseToolbarRefresh.vb
' Copyright 2011 ESRI
' 
' All rights reserved under the copyright laws of the United States
' and applicable international laws, treaties, and conventions.
' 
' You may freely redistribute and use this sample code, with or
' without modification, provided you include the original copyright
' notice and use restrictions.
' 
' See the use restrictions.
' 

' Implement on the Page to access custom page members (methods, properties) 

Imports Microsoft.VisualBasic
Imports System
Public Interface IBaseToolbarRefresh
  Function RefreshToolbar(ByVal toolItemName As String, ByVal disabled As Boolean) As ESRI.ArcGIS.ADF.Web.UI.WebControls.CallbackResultCollection
End Interface