Unable to write to registry

[Vernon Peppers]

I am a newbie with .NET, trying to step up from VB6. I have a need to write
to and read from the registry. Config files will not be acceptable due to
their lack of security. The registry entry will have to do with the proper
registration and purchase of the program. I have the following code in my
program:

Public Sub SetRegValue(ByV al ValueName As String, ByVal TestValue As
Boolean)

Dim f As New RegistryPermiss ion(RegistryPer missionAccess.R ead Or
RegistryPermiss ionAccess.Write , "HKEY_LOCAL_MAC HINE\Software")

Application.Com monAppDataRegis try.SetValue(Va lueName, TestValue)

End Sub

I receive the following error whenever I try to run the program:
Unhandled Exception: System.Security .SecurityExcept ion: Request for the
permission of type System.Security .Permissions.Re gistryPermissio n, mscorlib,
Version=1.0.500 0.0, Culture=neutral , PublicKeyToken= b77a5c561934e08 9 failed.

I am an administrator on my computer, so that can't be the problem. What am
I doing wrong?

[iwdu15]

RE: Unable to write to registry

if you just want to write strings, use the "Savesettin g" and "getsetting "
features

ex:

SaveSetting("Pr ogram", "Section", "Key", "Setting")

Dim temp as string
temp = GetSetting("Pro gram", "Section", "Key")

[Cor Ligthert [MVP]]

Re: Unable to write to registry

Vernon,

Why are you trying to set the hardware settings for a program.

Setting things in the curren user part of the registry is very easy with
VBNet.

http://msdn.microsoft.com/library/de...classtopic.asp

The only difficult thing is to find the format of the stringarray. However
you are using plain strings, so using this link you would be able to handle
your problem in my opinion.

I hope this helps,

Cor

[Vernon Peppers]

Re: Unable to write to registry

I am not trying to set hardware settings. I need program settings for
whomever is using the machine. HKCU is different for each user. I would
have to set the program security features for each user when he accessed it
the first time. The program will be sold on the Internet, and will allow a
demo mode for thirty days. After that the program must be purchased and
registered, or it quits working. I need to store the registration data in a
secure place where it can be accessed by all users. HKLM is the proper
place for that kind of data.

"Cor Ligthert [MVP]" <notmyfirstname @planet.nl> wrote in message
news:u$7iYO7pFH A.3160@TK2MSFTN GP14.phx.gbl...[color=blue]
> Vernon,
>
> Why are you trying to set the hardware settings for a program.
>
> Setting things in the curren user part of the registry is very easy with
> VBNet.
>
>[/color]
http://msdn.microsoft.com/library/de...classtopic.asp[color=blue]
>
> The only difficult thing is to find the format of the stringarray. However
> you are using plain strings, so using this link you would be able to[/color]
handle[color=blue]
> your problem in my opinion.
>
> I hope this helps,
>
> Cor
>
>[/color]

[Vernon Peppers]

Re: Unable to write to registry

Savesetting and Getsetting saves everything in the VB and VBA key. Besides,
that doesn't solve my prolbem with registry permissions. That's what I need
help on.

"iwdu15" <iwdu15@discuss ions.microsoft. com> wrote in message
news:47BC0495-AFCE-49F6-A09E-EE7ABD36940C@mi crosoft.com...[color=blue]
> if you just want to write strings, use the "Savesettin g" and "getsetting "
> features
>
> ex:
>
> SaveSetting("Pr ogram", "Section", "Key", "Setting")
>
> Dim temp as string
> temp = GetSetting("Pro gram", "Section", "Key")[/color]

[Vernon Peppers]

Re: Unable to write to registry

As i continue to work, I find that I not only can not set permissions for
registry access, I can't set permissions for file IO. Someone please help
me with this permissions problem.

"Vernon Peppers" <procomp@commun ity.nospam> wrote in message
news:eYm%23vXzp FHA.1044@tk2msf tngp13.phx.gbl. ..[color=blue]
> I am a newbie with .NET, trying to step up from VB6. I have a need to[/color]
write[color=blue]
> to and read from the registry. Config files will not be acceptable due to
> their lack of security. The registry entry will have to do with the[/color]
proper[color=blue]
> registration and purchase of the program. I have the following code in my
> program:
>
> Public Sub SetRegValue(ByV al ValueName As String, ByVal TestValue As
> Boolean)
>
> Dim f As New RegistryPermiss ion(RegistryPer missionAccess.R ead Or
> RegistryPermiss ionAccess.Write , "HKEY_LOCAL_MAC HINE\Software")
>
> Application.Com monAppDataRegis try.SetValue(Va lueName, TestValue)
>
> End Sub
>
> I receive the following error whenever I try to run the program:
> Unhandled Exception: System.Security .SecurityExcept ion: Request for the
> permission of type System.Security .Permissions.Re gistryPermissio n,[/color]
mscorlib,[color=blue]
> Version=1.0.500 0.0, Culture=neutral , PublicKeyToken= b77a5c561934e08 9[/color]
failed.[color=blue]
>
> I am an administrator on my computer, so that can't be the problem. What[/color]
am[color=blue]
> I doing wrong?
>
>[/color]

[Cor Ligthert [MVP]]

Re: Unable to write to registry

Vernon,
[color=blue]
>I am not trying to set hardware settings. I need program settings for
> whomever is using the machine.[/color]

What do you want to protect the machine or the software. The last has to be
set in the software part from either the current or the default user. I gave
you all the information in that link how to do that, what is your problem
than.

I have the idea that you did not even look for it, do you really want help.

Cor

[Peter Huang [MSFT]]

RE: Unable to write to registry

Hi

Based on my test, the code below will create a subkey under HKLM/Software
under the account with administrator rights.
You may have a try.
Sub Main()
Dim test9999 As RegistryKey =
Registry.LocalM achine.OpenSubK ey("SOFTWARE", True)
Dim test8888 As RegistryKey = test9999.Create SubKey("MyTest" )
test8888.SetVal ue("Test", "Hello World")
End Sub

Also the RegistryPermiss ion and FileIOPermissio n is used to control how
code access to the registry/file(known as Code Access Security).

For code access security, I think you may try to take a look at the link
below as a start.
Code Access Security
http://msdn.microsoft.com/library/de...us/cpguide/htm
l/cpconcodeaccess security.asp


Best regards,

Peter Huang
Microsoft Online Partner Support

Get Secure! - www.microsoft.com/security
This posting is provided "AS IS" with no warranties, and confers no rights.