C#: Remove Read-only attribute from File without Administrative Privilege

Question

Is there a way to remove read-only attribute of a file if the user is not an administrator?

This works if you're an admin but what if you're not?

FileInfo myFile = new FileInfo(pathToFile);
myFile.IsReadOnly = false;

Solution

You need to have read/write permission on the file.

I preferably use a method like this:

FileSystemInfo fsi = new FileSystemInfo(pathToFile);
fsi.Attributes = FileAttributes.Normal;

or

File.SetAttributes(pathToFile, FileAttributes.Normal);

But as I've said, this won't be possible without read/write permissions on the specific file.

Comments

[Steve]

That works if you have read/write permission on file. The administrator role is not the key.

[Damien_The_Unbeliever]

This is a permissions issue, not an Admin/non Admin issue, per se. If the user account you're running under has the "Write Attributes" permission on the file, they'll be able to make this change.

[Butters]

Thanks. I understand it now.