public IAsyncResult BeginSendPageAdd(Page page, AsyncCallback callback, object state)
{
if (disposed)
{
throw new ObjectDisposedException("RTDocumentHelper has been disposed");
}
RTPageAdd pa = new RTPageAdd(page);
AddTOCNodeToRTDocument(pa.TOCNode);
AddPageToRTDocument(pa.Page);
return(capability.BeginSendObjectBackground(pa, callback, state));
}