> Hi guys,
>
> I've noticed that simple .NET code to create directories does not seem to
> work on Vista.
>
> Take the following simple example (implemented in a Windows forms
> application):
>
> ==========================
>
> FileInfo executableFile = new FileInfo(Application.ExecutablePath);
> DirectoryInfo directory =
> executableFile.Directory.CreateSubdirectory("Test");
>
> if (!directory.Exists)
> {
> directory.Create();
> }
>
> ==========================
>
> This works fine on XP, but not on Vista, despite the "belt and braces"
> approach!
>
> I guess this is to do with the improved security model in Vista. Clearly
> there will be no way to override this in code (else it is useless in
> preventing hackers from playing), but it would be good to find some kind
> of
> solution to this problem, even if that was popping up a box for the user
> to
> confirm that they're happy for Vista to perform the action.
>
> Does anyone have any ideas as to how I can proceed?
>
> Thanks in advance,
>
> Steve.
>

"Patrice" wrote:

> Even in XP, AFAIK you can't create a directory in "program files" (is this
> where your executable is ?) under a non administrative account. Depending on
> what you are trying to store, I would rather try another location...
>
> Else what is the error you get ?
>
>
> "Steve Barker" <stevebarker@nospam.nospam> a écrit dans le message de news:
> FC7E57C4-0FED-400F-A0D4-784E66E59***@microsoft.com...
> > Hi guys,
> >
> > I've noticed that simple .NET code to create directories does not seem to
> > work on Vista.
> >
> > Take the following simple example (implemented in a Windows forms
> > application):
> >
> > ==========================
> >
> > FileInfo executableFile = new FileInfo(Application.ExecutablePath);
> > DirectoryInfo directory =
> > executableFile.Directory.CreateSubdirectory("Test");
> >
> > if (!directory.Exists)
> > {
> > directory.Create();
> > }
> >
> > ==========================
> >
> > This works fine on XP, but not on Vista, despite the "belt and braces"
> > approach!
> >
> > I guess this is to do with the improved security model in Vista. Clearly
> > there will be no way to override this in code (else it is useless in
> > preventing hackers from playing), but it would be good to find some kind
> > of
> > solution to this problem, even if that was popping up a box for the user
> > to
> > confirm that they're happy for Vista to perform the action.
> >
> > Does anyone have any ideas as to how I can proceed?
> >
> > Thanks in advance,
> >
> > Steve.
> >
>
>
>

> Hi Patrice,
>
> Thanks for your reply!
>
> I didn't realise that you don't intrinsically get create permissions on
> Program File folders if you're not an administrator. Just goes to show that
> almost all users run Windows under an administrator account all the time. No
> wonder viruses are so prevalent!
>
> Under Vista, when you try to create folders under the Program Files, you
> don't get an error. The application continues as though everything is fine,
> except the folder is not created. This is the case even when you're logged in
> as an administrator. However, you can get round this by "running the program
> as an administrator". To do this, you must find the executable you are trying
> to run (because the option isn't available from the shortcut), and right
> click. The option is something like "Run as administrator..." In that case, the
> application is able to create the folder. If you're already logged on as an
> administrator, the thing just works. Otherwise, a dialog appears for you to
> enter administrator login information.
>
> XP is a different matter. When you log in as an administrator, the folder is
> created with no problems. However, when you log in as a standard user, you
> get a nasty .NET unhandled exception when you try to create the folder.
>
> Has anyone got any suggestions as to how I can make my application more
> elegant? I am aware of Permission classes in .NET; in this case, the one I
> need is FileIOPermission. However, I'm not exactly sure what this can do or
> what the best way to use them would be. Surely, the Assert() method won't
> actually give the application the permissions it needs?!
>
> Thanks in advance,
>
> Steve.
>
>
>
> "Patrice" wrote:
> > Even in XP, AFAIK you can't create a directory in "program files" (is this
> > where your executable is ?) under a non administrative account. Depending on
> > what you are trying to store, I would rather try another location...
>
> > Else what is the error you get ?
>
> > "Steve Barker" <stevebar...@nospam.nospam> a écrit dans le message de news:
> > FC7E57C4-0FED-400F-A0D4-784E66E59***@microsoft.com...
> > > Hi guys,
>
> > > I've noticed that simple .NET code to create directories does not seem to
> > > work on Vista.
>
> > > Take the following simple example (implemented in a Windows forms
> > > application):
>
> > > ==========================
>
> > > FileInfo executableFile = new FileInfo(Application.ExecutablePath);
> > > DirectoryInfo directory =
> > > executableFile.Directory.CreateSubdirectory("Test");
>
> > > if (!directory.Exists)
> > > {
> > > directory.Create();
> > > }
>
> > > ==========================
>
> > > This works fine on XP, but not on Vista, despite the "belt and braces"
> > > approach!
>
> > > I guess this is to do with the improved security model in Vista. Clearly
> > > there will be no way to override this in code (else it is useless in
> > > preventing hackers from playing), but it would be good to find some kind
> > > of
> > > solution to this problem, even if that was popping up a box for the user
> > > to
> > > confirm that they're happy for Vista to perform the action.
>
> > > Does anyone have any ideas as to how I can proceed?
>
> > > Thanks in advance,
>
> > > Steve.- Masquer le texte des messages précédents -
>
> - Afficher le texte des messages précédents -