Github user guidotag commented on the pull request:
https://github.com/apache/lucenenet/pull/62#issuecomment-71775513
@laimis: Sure. I found that if you set file to null before entering the
using's scope and then, inside it, change it to reference a File object, it
does not dispose the resources correctly (namely, it does not close the file we
are opening). I did an isolated test to reproduce it (constructed a dummy
IDisposable object and used the using instruction in the same way), and it also
failed. I am no C# expert, so I wasn't completely sure why this happened.
Nevertheless, it is reasonable that if you change the reference of the variable
inside the using's scope, bad things could happen.
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