How to automatically delete files in download upon exit

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Browse All News Articles. Xbox Series X Bundle. Windows Zero Day. Xbox Virtual Museum. Windows 11 Emoji. GoDaddy Breach. We want to do this even if somebody fails to Dispose it correctly. We don't even have a File instance. Show 1 more comment. Consider using the FileOptions. OpenOrCreate, FileAccess. ReadWrite, FileShare. None, , FileOptions. RandomAccess FileOptions. DanW DanW 1, 18 18 silver badges 14 14 bronze badges. I edited the code to make it a little clearer and changed the buffer size to match the FileStream default.

CreateNew but I left FileMode. OpenOrCreate since you chose it purposefully. The other process can't access file created even when FileOptions. DeleteOnClose is set and do not takes in account the FileShare. So overall this code makes no sense to use as temp file.

Tomas Don't suppose you'd be able to elaborate on why this code snippet will not allow other process to access despite the DeleteOnClose? I'm not disagreeing with you, as I have literally wrote this same using statement and just ran into the issue that a process still has a hold on the file hence me finding this thread!

I'm new to C and can't seem to work out specifically what about this is causing that, and what the recommended alternative would be use File. Create instead of new FileStream? David Grant David Grant 3, 4 4 gold badges 28 28 silver badges 33 33 bronze badges. Be careful using this method if you need to open the file more than once e. For example, if you expect to open, populate, and close the file, it may vanish immediately so that you cannot use what you just created.

You would have to leave the original handle open long enough for a 2nd handle to be opened, but that could cause a sharing violation if not opened with the appropriate flags.

NET 4 possibly earlier , just use File. Create path, 0x, FileOptions. I wonder if there is a way to use FileOptions. DeleteOnClose in conjunction with System. Start myFile somehow. I would like to display the file and immediately delete after.

I don't see a way to do this with DeleteOnClose. Community Bot 1 1 1 silver badge. I use a more reliable solution: using System. IO; using System. Reflection; namespace Konard. Exists tempFileToDelete File. UseNew ; To be sure all temporary files are deleted after application closes or crashes put TemporaryFiles.

DeleteAllPreviouslyUsed ; at start of the application. Konard Konard 1, 17 17 silver badges 18 18 bronze badges. StingyJack StingyJack Personally I think a temp file is a temp file, and should be destroyed as soon as it's no longer needed. I hate my disk being cluttered with all kinds of trash.