StackOverflow2013

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PO
primarykey
Id
595575
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0
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0
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0
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CreationDate
2009-02-27T16:47:21.857
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0
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2009-02-27T16:47:21.857
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0
OwnerUserId
26534
ParentId
595504
PostTypeId
2
Score
4
ViewCount
0
LastEditorDisplayName
text
Body
Disclaimer: I don't use Windows, though I am familiar with its strange way of locking things. In order to update your application while it is running, you'll likely need to have two processes: The executable itself, and an update “helper” application that will finish the update process. Let's say that your application is ProcessA.exe and your update helper is Updater.exe. Your main program will download a new copy of the executable, saving it with a random name. Then you run your updater program, which watches for the termination of your current process. When your process terminates, it displays a quick window showing the status of the update, moving the new executable into the place of the old one, and then restarting that program. It'd be more elegant to be able to emulate POSIX filesystem semantics and be able to delete the currently-running process disk image and replace it with a new file, but I don't know if that is even possible on Windows. On a POSIX system, you can delete an in-use file and it won't actually be deleted until any remaining file handles are closed, though you can then reuse the filename. You might want to check out an article written at <a href="http://www.codeproject.com/" rel="nofollow noreferrer">CodeProject</a> that <a href="http://www.codeproject.com/KB/vb/autoupdate.aspx" rel="nofollow noreferrer">talks about this</a>. It also has a <a href="http://www.codeproject.com/KB/vb/Auto_Update_Revisited.aspx" rel="nofollow noreferrer">follow-up article</a>. Good luck!
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1. POHow can I launch a program from memory in C#?
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1. USMichael Trausch
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