Registry - Writing to ..Security / Auth problems

[Neal Rogers via .NET 247]

Hi All

Using VB.Net
I have tried unsuccessfully (firstly with a Web App.. and IUSER_MachineName permissions ) to write to the registry.
So , now I've tried from a windows application, and same result
ie
key.SetValue("pwd", sValIn) ' = ERROR: cannot write to the registry key
("Run-time exception thrown : System.UnauthorizedAccessException - Cannot write to the registry key.")

I have set evry possible permission for every listed user on my machine to DenyNothing, and FullControl, and
in code set RegistryPermissions ..all the code is beneath.

Still, NO way I can write to registry

Anybody...???

TIA
Neal

Code....
'checks to see read functionality
key = Registry.CurrentUser.OpenSubKey("SOFTWARE\SPLUS\pwd")
key.GetValue("pwd")

Dim f As New RegistryPermission(RegistryPermissionAccess.AllAccess, _
"HKEY_CURRENT_USER\SOFTWARE")
f.AddPathList(RegistryPermissionAccess.Write, "HKEY_CURRENT_USER\SOFTWARE")
f.AddPathList(RegistryPermissionAccess.Write, "HKEY_CURRENT_USER\SOFTWARE\SPLUS")
f.AddPathList(RegistryPermissionAccess.Write, "HKEY_CURRENT_USER\SOFTWARE\SPLUS\pwd")

f.Assert()

key.SetValue("pwd", sValIn) 'cannot write to the registry key

 

[Nicole Calinoiu]

Neal,

The overload of OpenSubKey that you are using opens the key for reading
only. Try using the overload that allows you to specify that you want to
open the key for writing
(http://msdn.microsoft.com/library/e...softwin32registrykeyclassopensubkeytopic2.asp).

Even if the above does resolve the exception you are currently receiving,
you may run into further problems. The HKEY_CURRENT_USER hive is not
populated for the runtime execution context users of services (including IIS
or ASP.NET). Therefore, attempting to use a subkey of HKEY_CURRENT_USER for
your web application is unlikely to be particularly successful. If the
value is not meant to vary between users, why not use a subkey of
HKEY_LOCAL_MACHINE instead? Otherwise, you should probably consider an
alternate data store.

HTH,
Nicole