[wix-users] Conditionally remove a folder using RemoveFolderEx?

[Markus Kramer]

Hi
I try to use *RemoveFolderEx *to remove a cache directory only on
uninstall, but keep the cache during major upgrades.
So far I am unable to prevent the removal of the cache during a major
upgrade.

I use the condition *NOT WIX_UPGRADE_DETECTED* to detect an upgrade, but
nonetheless the component is unregistered and registered again during
upgrade, and RemoveFolderEx removes the cache.

Can I conditionally leave a component installed?
Can I add a condition to *RemoveFolderEx*?
Thanks


The cache directory has id *VARFOLDER *and the component that holds
*RemoveFolderEx
*is called *RemoveFolderEx_VARFOLDER_Component*

<?xml version="1.0" encoding="UTF-8"?>
<Wix
    xmlns="http://schemas.microsoft.com/wix/2006/wi"
    xmlns:util="http://schemas.microsoft.com/wix/UtilExtension">
  <Product
      Name='Foobar'
      Version="$(var.InternalVersion)"
      Manufacturer='Acme Ltd.'
      Language='1033'
      UpgradeCode='802c19d8-ace7-4f76-bf00-7132df6a92a9'
      Id='*'
      >
    <Package InstallerVersion='450' Compressed='yes'
InstallScope="perMachine" Platform="x64" />
    <MediaTemplate EmbedCab="yes" />
    <MajorUpgrade DowngradeErrorMessage="A newer version of [ProductName]
is already installed." />

    <InstallExecuteSequence>
    </InstallExecuteSequence>

    <Directory Id='TARGETDIR' Name='SourceDir'>
      <Directory Id='INSTALLFOLDER' Name='AcmeFoobar'>
        <Directory Id='BINFOLDER' Name='bin'>
          <Component Id='MainExecutable' Win64='yes'
Guid="108c2034-c33a-4d0f-a82f-ebeac2a840cb">
            <File Id='FoobarEXE' Name="$(var.Foobarexefile)"
Source="$(var.Foobarexefile)" KeyPath='yes'/>
          </Component>
        </Directory>
        <Directory Id='VARFOLDER' Name='var'>
        </Directory>
      </Directory>
    </Directory>

    <Feature Id='Complete'>
      <ComponentRef Id='MainExecutable'/>
      <ComponentRef Id="RemoveFolderEx_VARFOLDER_Component"/>
      <ComponentRef Id="RemoveFolderEx_BINFOLDER_Component"/>
    </Feature>
  </Product>

  <Fragment Id="RemoveFolderEx_Fragment">
    <?define RegDir="SOFTWARE\AcmeFoobar"?>
    <?define RegVal_BINFOLDER="RememberForRemoveFolderEx_BINFOLDER"?>
    <?define RegVal_VARFOLDER="RememberForRemoveFolderEx_VARFOLDER"?>
    <Property Id="BINFOLDER">
      <RegistrySearch Root="HKLM" Key="$(var.RegDir)" Type="raw"
                Id="APPLICATIONFOLDER_REGSEARCH_BIN"
Name="$(var.RegVal_BINFOLDER)" />
    </Property>
    <Property Id="VARFOLDER">
      <RegistrySearch Root="HKLM" Key="$(var.RegDir)" Type="raw"
                Id="APPLICATIONFOLDER_REGSEARCH_VAR"
Name="$(var.RegVal_VARFOLDER)" />
    </Property>

    <DirectoryRef Id='BINFOLDER'>
      <Component Id="RemoveFolderEx_BINFOLDER_Component"
Guid="b70cd37e-b13b-4c1f-b1f0-095a695c27c8" Win64='yes'>
        <RegistryValue Root="HKLM" Key="$(var.RegDir)"
Name="$(var.RegVal_BINFOLDER)"
                Type="string" Value="[BINFOLDER]" KeyPath="yes"/>
        <util:RemoveFolderEx Property="BINFOLDER" On="uninstall"/>  <!--
uninstall INCLUDES UPGRADE -->
      </Component>
    </DirectoryRef>

    <!--       Codition has no effect    -->
    <DirectoryRef Id='VARFOLDER'>
      <Component Id="RemoveFolderEx_VARFOLDER_Component"
Guid="301efe0b-a8b3-419d-b787-3478eb56e252" Win64='yes'>
        <Condition>NOT WIX_UPGRADE_DETECTED</Condition>
        <RegistryValue Root="HKLM" Key="$(var.RegDir)"
Name="$(var.RegVal_VARFOLDER)"
                Type="string" Value="[VARFOLDER]" KeyPath="yes"/>
        <util:RemoveFolderEx Property="VARFOLDER" On="uninstall"/>  <!--
uninstall INCLUDES UPGRADE -->
      </Component>
    </DirectoryRef>
  </Fragment>
</Wix>