XmlDocument.Save unhandled exception thrown from GC thread

Question

I develop a simple app, when i try to save an XMLDocument to a thumb drive which doesn\'t have enough free space, weird thing happens. Though i already added \"try catch\" claus

Answer 1

Well, the problem is that some code somewhere isn't disposing of the FileStream when it's done with it. When the FileStream is finalized, it's trying to flush the data - at which point the exception is being thrown.

If that really is all of your code, it sounds like it's a bug in XmlDocument.Save(), which should definitely close all its streams before returning. You could work around this by opening the FileStream yourself (with a using statement) and passing the stream to XmlDocument.Save instead.