how can protect of selected file

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3.00/5 (2 votes)

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hello
I have writen a program that use a file and I want to limit access to this file as another program or user can not change or delete this file.

Thank

Posted 1-Mar-11 9:04am

shirez

Updated 1-Mar-11 9:49am

Henry Minute

v2

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Albin Abel 1-Mar-11 15:06pm

I think you may use Isolated storage

3 solutions

Solution 3

If you want to protect your file just during your run-time, you can simply keep it open with exclusive access to it (which is by default). You can close your stream at the very end of run-time.

—SA

Posted 1-Mar-11 9:32am

Sergey Alexandrovich Kryukov

Comments

Albin Abel 1-Mar-11 15:36pm

Good thinking. My 5

Sergey Alexandrovich Kryukov 1-Mar-11 15:52pm

Thank you.
--SA

Solution 1

Basically, you can't.
You can hide it, and make it read only, and even system (if you have the permissions) but anything you can do, someone else can do too. If they couldn't, you couldn't change or delete it either.

Better solution: encrypt the file content so it can't be modified, make it read only if you must, and hope.

Posted 1-Mar-11 9:08am

OriginalGriff

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Albin Abel 1-Mar-11 15:14pm

Encryption is a good point too. My 5

Sergey Alexandrovich Kryukov 1-Mar-11 15:32pm

Basically you're right, but... may be OP needs something much more simple -- see my Answer.
--SA

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Albin Abel · Accepted Answer · 2011-03-01T09:11:00

Solution 2

These links may be useful:

http://msdn.microsoft.com/en-us/library/3ak841sy%28v=vs.80%29.aspx[^]

http://msdn.microsoft.com/en-us/library/system.io.isolatedstorage.isolatedstoragefile.aspx[^]

Posted 1-Mar-11 9:11am

Albin Abel

Updated 1-Mar-11 9:29am

v3

Comments

Sergey Alexandrovich Kryukov 1-Mar-11 15:30pm

This is a sound idea, my 5 (do you mind I edited your Answer?)
--SA

Sergey Alexandrovich Kryukov 1-Mar-11 15:33pm

May be something more simple would suffice? Please see my Answer.
--SA

Albin Abel 1-Mar-11 15:35pm

Thanks SAKryukov. You can edit the answer. No problems

Yusuf 1-Mar-11 15:37pm

Good Answer

Albin Abel 1-Mar-11 15:42pm

Thanks Yusuf