WIX 目录搜索总是失败

Question

似乎无论我做什么，我在 WIX 中放入我的产品的任何条件都会阻止我的安装运行。下面我放了一些简单的代码，用于检查程序文件目录是否存在，如果存在，则运行安装程序。我收到一条消息，提示“未找到程序文件文件夹”。指示条件返回false。我在这里缺少什么？

<?xml version="1.0" encoding="UTF-8"?>
<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
<Product Id="*" Name="SetupProject1" Language="1033" Version="1.0.0.0" Manufacturer="Toshiba" UpgradeCode="bb557911-769b-4a30-8461-3ad860ddc10e">
    <Package InstallerVersion="200" Compressed="yes" InstallScope="perMachine" />

    <MajorUpgrade DowngradeErrorMessage="A newer version of [ProductName] is already installed." />
    <MediaTemplate />

<Property Id="PFFOLDER" >
  <DirectorySearch Id="SystemFolderDriverVersion" Path="[ProgramFilesFolder]">
  </DirectorySearch>
</Property>

<Condition Message="Program files folder not found.">
  <![CDATA[PFFOLDER]]>
</Condition>


    <Feature Id="ProductFeature" Title="SetupProject1" Level="1">
        <ComponentGroupRef Id="ProductComponents" />
    </Feature>
</Product>

<Fragment>
    <Directory Id="TARGETDIR" Name="SourceDir">
        <Directory Id="ProgramFilesFolder">
            <Directory Id="INSTALLFOLDER" Name="SetupProject1" />
        </Directory>
    </Directory>
</Fragment>

<Fragment>
    <ComponentGroup Id="ProductComponents" Directory="INSTALLFOLDER">
        <!-- TODO: Remove the comments around this Component element and the ComponentRef below in order to add resources to this installer. -->
        <!-- <Component Id="ProductComponent"> -->
            <!-- TODO: Insert files, registry keys, and other resources here. -->
        <!-- </Component> -->
    </ComponentGroup>
</Fragment>

Answer 1

将 AssignToProperty="yes"添加到 DirectorySearch 元素。此外，我认为您不需要将属性名称包装在 CDATA 块中。