If by using a local variable you mean local field, then yes this is reliable.
From: ozdotnet-boun...@ozdotnet.com [mailto:ozdotnet-boun...@ozdotnet.com] On Behalf Of Greg Keogh Sent: Sunday, October 31, 2010 1:44 PM To: 'ozDotNet' Subject: FW: Use of GCHandle.Alloc and Free You may recall two weeks ago I had to use code like this to stop a COM object from being collected: GCHandle cursorHandle = GCHandle.Alloc(feature.Cursor, GCHandleType.Normal); A few people suggested that it was overkill and simply making a local variable reference to feature.Cursor would fix the problem. It does! Although I wonder if using a dummy reference is reliable. In Debug mode it works, but in Release mode might it get optimised away and my problem will return? I didn't try it. Greg
