Can we prevent renaming a file once it is created?

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I want to create a 'password.txt' file dynamically.But once created it should not be renamed forever,Is there any way to do this in c#?

C#

string path1 = txtdestination.Text+"password(.txt).enm";
File.WriteAllBytes(path1, keyEncrypted);

Posted 8-Oct-15 19:45pm

sayana3

Updated 8-Oct-15 19:59pm

v3

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3 solutions

Solution 1

You can do this :

Follow the link http://stackoverflow.com/questions/11318663/prevent-a-user-from-deleting-moving-or-renaming-a-file[^]

Hope it will solve your problem.

Posted 8-Oct-15 20:26pm

Ch Smrutiranjan

v2

Comments

BillWoodruff 9-Oct-15 2:46am

The content in that link only prevents a running program from modifing a file it created. That has nothing to do with making the file tamper-proof from other programs.

Solution 3

Try this code,

C#

FileInfo objFile = new FileInfo(path1);
FileSecurity objFileSecurity = objFile.GetAccessControl();
objFileSecurity.AddAccessRule(new FileSystemAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null), FileSystemRights.Delete, AccessControlType.Deny));
objFileSecurity.AddAccessRule(new FileSystemAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null), FileSystemRights.TakeOwnership, AccessControlType.Deny));
objFileSecurity.AddAccessRule(new FileSystemAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null), FileSystemRights.ReadData, AccessControlType.Allow));
objFile.SetAccessControl(objFileSecurity);

Posted 8-Oct-15 20:29pm

VR Karthikeyan

Updated 8-Oct-15 20:30pm

v2

Comments

BillWoodruff 9-Oct-15 2:47am

So, you use the code you show here ... how does that prevent the kinds of access that the answer above by OriginalGriff describes ?

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OriginalGriff · Accepted Answer · 2015-10-08T20:09:00

No.
The problem is that the only way to do this is via user permissions - and the admin cab change those at will.
Plus, if a user has read permissions on a file then he can write a new copy under a different name.

Why would you want to do that anyway? If nothing else, I like to have backups - particularly of important files which my passwords would be (if I stored them in text files, which I don't)