使用WiX配置网络应用程序，并在已存在的应用程序池中使用该应用程序

<?xml version="1.0" encoding="UTF-8"?>
<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
  <Product Id="*" Name="MyWebApp" Language="1033" Version="1.0.0.0" Manufacturer="MyCompany" UpgradeCode="PUT-GUID-HERE">
    <Package InstallerVersion="200" Compressed="yes" InstallScope="perMachine" />

    <MajorUpgrade DowngradeErrorMessage="A newer version of [ProductName] is already installed." />
    
    <Feature Id="ProductFeature" Title="MyWebApp" Level="1">
      <ComponentGroupRef Id="ProductComponents" />
    </Feature>
    
    <UIRef Id="WixUI_Web" />
    
    <Property Id="APP_POOL_NAME" Value="MyAppPool" />
    
    <CustomAction Id="SetAppPool" Property="APP_POOL_NAME" Value="[APP_POOL_NAME]" Execute="immediate" />
    
    <InstallExecuteSequence>
      <Custom Action="SetAppPool" Before="InstallFinalize" />
    </InstallExecuteSequence>
  </Product>

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

  <Fragment>
    <ComponentGroup Id="ProductComponents" Directory="INSTALLFOLDER">
      <Component Id="MyWebApp" Guid="PUT-GUID-HERE">
        <File Id="MyWebAppExe" Source="path\to\MyWebApp.exe" KeyPath="yes" />
      </Component>
    </ComponentGroup>
  </Fragment>
  
  <Fragment>
    <WebAppPool Id="MyAppPool" Name="[APP_POOL_NAME]" />
  </Fragment>
</Wix>