Does anyone know if viewstate is available when using ICallbackEventHandler? If not is there any work around to get it? Thanks.
ViewState is available to be read, but you cannot update it.
You might wanna check this out for idea of a workaround: http://www.reimers.dk/blogs/jacob_reimers_weblog/archive/2007/03/23/tweaking-the-icallbackeventhandler-and-viewstate.aspx