[wix-users] Can't Access CustomData during uninstall

[Justin Cox]

So the error was in my catch block, which I threw to an immediateCA error
catcher, which sets a variable, then writes it to a log after exiting the
CA.  Fixing that, the error I'm getting now is:

System.Collection.Generic.KeyNotFoundException: The given key was not
present in the dictionary,
  at System.Collections.Generic.Dictionary'2.get_Item(TKey key)
  at XXXXXShared.DPWixExtension.UninstallFolders(Session session)

So it still seems it's not getting the FolderList variable, even though the
log shows it's being set.  I'm stumped!



On Tue, Mar 26, 2019 at 8:11 PM Rob Mensching <rob at firegiant.com> wrote:

> The stack trace seems to show the custom action trying to set a property:
>
>    at Microsoft.Deployment.WindowsInstaller.Session.set_Item(String
> property, String value)
>
> PS: don't write your custom action like this, add temporary rows to tables
> instead.
>
> _____________________________________________________________
>  Short replies here. Complete answers over there:
> http://www.firegiant.com/
>
> -----Original Message-----
> From: wix-users <wix-users-bounces at lists.wixtoolset.org> On Behalf Of
> Justin Cox via wix-users
> Sent: Tuesday, March 26, 2019 5:38 PM
> To: WiX Toolset Users Mailing List (wix-users at lists.wixtoolset.org) <
> wix-users at lists.wixtoolset.org>
> Cc: Justin Cox <cox.justin.a at gmail.com>
> Subject: [wix-users] Can't Access CustomData during uninstall
>
> I have custom scripts to backup folders during an install, rollback, and
> uninstall.  they all work except for the uninstall.
> I set the value:
>   <CustomAction Id="SetFolderValuesUninstall" Property="UninstallFolders"
> Value="FolderList=[INSTALLCLIENTINTERFACEDIR]"/>
>
> I execute the command:
>   <CustomAction Id="UninstallFolders" BinaryKey="XXXXXShared.CA.dll"
> DllEntry="UninstallFolders" Return="check" Execute="deferred" />
>
> My C# code is:
>         [CustomAction]
>         public static ActionResult UninstallFolders(Session session)
>         {
>             ActionResult ar = ActionResult.Success;
>             try
>             {
>                 string folderlist = session.CustomActionData["FolderList"];
>                 MessageBox.Show("FolderList = " + folderlist);
>                 List<string> foldersToDelete =
> folderlist.Split('|').ToList();
>                 ar = DeleteFolders(foldersToDelete, session);
>                 return ar;
>             }
>             catch (Exception ex)
>             {
>                 ar = immediateErrorCatcher(ex, session);
>                 return ar;
>             }
>         }
>
> Everything works fine during the install, but during the uninstall, it
> sets the value correctly:
>
> MSI (s) (60:04) [17:33:58:021]: PROPERTY CHANGE: Adding UninstallFolders
> property. Its value is
> 'FolderList=C:\inetpub\wwwroot\XXXXXClientInterface\'.
>
> Then, I get this error in verbose logging:
> Calling custom action
> XXXXXShared!XXXXXShared.DPWixExtension.UninstallFolders
> Exception thrown by custom action:
> System.Reflection.TargetInvocationException: Exception has been thrown by
> the target of an invocation. --->
> Microsoft.Deployment.WindowsInstaller.InstallerException: Cannot access
> session details from a non-immediate custom action
>    at Microsoft.Deployment.WindowsInstaller.Session.ValidateSessionAccess()
>    at Microsoft.Deployment.WindowsInstaller.Session.set_Item(String
> property, String value)
>    at XXXXXShared.DPWixExtension.immediateErrorCatcher(Exception ex,
> Session ses)
>    at XXXXXShared.DPWixExtension.UninstallFolders(Session session)
>    --- End of inner exception stack trace ---
>    at System.RuntimeMethodHandle.InvokeMethod(Object target, Object
> arguments, Signature sig, Boolean constructor)
>    at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj,
> Object parameters, Object arguments)
>    at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags
> invokeAttr, Binder binder, Object parameters, CultureInfo culture)
>    at
>
> Microsoft.Deployment.WindowsInstaller.CustomActionProxy.InvokeCustomAction(Int32
> sessionHandle, String entryPoint, IntPtr remotingDelegatePtr) CustomAction
> UninstallFolders returned actual error code 1603 (note this may not be 100%
> accurate if translation happened inside sandbox)
>
>
> the error is happening when I hite "string folderlist =
> session.CustomActionData["FolderList"];"
>
> Is it possible to pass CustomActionData during an uninstall? Or has the
> installer already thrown out those variables?
>
> ____________________________________________________________________
> WiX Toolset Users Mailing List provided by FireGiant
> http://www.firegiant.com/
>


-- 

*Justin Cox*



Senior Human Resource Manager

T. 913-684-4819 *•* M. 304-617-4845 *•*cox.justin.a at gmail.com *•* United
States Army *•*linkedin.com/in/jcox4