Office.Interop Tip of the week

I needed to get all content controls inside a word document and add an OnEnter and OnExit eventhandler however when you loop through the Controls in a document you are only allowed to access them as Host Controls and not Host Items so the event handlers are not accessible. Then I found out that a document contains a "ContentControlOnEnter" and "ContentControlOnExit" event handler!

Update 17 May 2010

Have just found out that you should never assign this event to a Microsoft.Office.Interop.Word.Document but rather a Microsoft.Office.Tools.Word.Document. I was using the first document and my events sometimes get removed. To get the latter document, you can use this method Microsoft.Office.Tools.Word.Document.GetVstoObject();