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XPath in MSBuild (SDC) and WIX

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I have a WIX file that I need to modify using MSBuild. It starts like this:

<?xml version="1.0" encoding="UTF-8"?>
<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi"
     xmlns:iis="http://schemas.microsoft.com/wix/IIsExtension">

  <?--... Various Removed Params ...-->

  <Product Id='$(var.ProductCode)'
    UpgradeCode='$(var.UpgradeCode)'
    Name='$(var.AppName)' Language="1033" Version='$(var.ProductVersion)'
    Manufacturer='$(var.Manufacturer)'>
    <Package Id='$(var.PackageCode)' InstallerVersion="200" 
    Compressed="yes" />

  <?--... More of the WIX XML file ...-->

  <iis:WebApplication Id='STWebApp' Name='MyWebSite' Isolation='medium' />

  <?--... Rest of the WIX XML file ...-->

My problem is SDC tasks cannot reference any of the WIX related xml nodes. For example:

<XmlFile.SetAttribute Path="$(MSBuildProjectDirectory)\TestProduct.wxs"
         XPath="//iis:WebApplication" Namespaces="@(Namespaces)" 
         Name="Name" Value="$(VersionTag)"/>

works just fine because it doesn't use any Wix nodes (iis one only), but if I use the full XPath path to it (/ Wix / Product / iis: WebApplication) the task returns:    Could not find resource string No matches found for XPath expressions

This is not a problem as long as I don't want to reference the node directory (/ Wix / Product / Directory / Directory / Directory / Directory [@Id = 'STWebSiteDir])

I've tried using the full XPath and the shorter // Directory [@Id = 'STWebSiteDir]. I've tried single quotes and double quotes, I've tried adding the WIX namespace to the call (no prefix).

<ItemGroup>
  <Namespaces Include="http://schemas.microsoft.com/wix/IIsExtension">
    <Prefix>iis</Prefix>
    <Uri>http://schemas.microsoft.com/wix/IIsExtension</Uri>
  </Namespaces>
  <Namespaces Include="http://schemas.microsoft.com/wix/2006/wi">
    <Prefix></Prefix>
    <Uri>http://schemas.microsoft.com/wix/2006/wi</Uri>
  </Namespaces>
</ItemGroup>

I even tried to just get the link to / Wix / Product and even that failed:

<XmlFile.SetAttribute Path="$(MSBuildProjectDirectory)\TestProduct.wxs" 
            XPath="/Wix/Product" Namespaces="@(Namespaces)" 
            Name="Name" Value="MODIFIED"/>

I am clearly missing something. Anyone with a hint of where to go to get this to work?

Vaccano

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4 answers


Can you just define variables on the command line for the preprocessor?

candle -dVariableName=ValueForVariable


It could be much easier.

+3


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Have you included the default Wix namespace in @ (namespaces)?



+1


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<ItemGroup>
  <Namespaces Include="http://schemas.microsoft.com/wix/IIsExtension">
    <Prefix>iis</Prefix>
    <Uri>http://schemas.microsoft.com/wix/IIsExtension</Uri>
  </Namespaces>
  <Namespaces Include="http://schemas.microsoft.com/wix/2006/wi">
     <Prefix>wis</Prefix>
    <Uri>http://schemas.microsoft.com/wix/2006/wi</Uri>
  </Namespaces>
</ItemGroup>

you should also add a prefix for the wi namespace, after which it can ok, i checked it.

+1


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OK, so here's the answer:

The namespace prefix must be missing for the wix part, not just empty

<ItemGroup>
  <Namespaces Include="http://schemas.microsoft.com/wix/IIsExtension">
    <Prefix>iis</Prefix>
    <Uri>http://schemas.microsoft.com/wix/IIsExtension</Uri>
  </Namespaces>
  <Namespaces Include="http://schemas.microsoft.com/wix/2006/wi">

    <Uri>http://schemas.microsoft.com/wix/2006/wi</Uri>
  </Namespaces>
</ItemGroup>

And then you need to add the prefix value to the wix namespace in the file. I used tst.

Vaccano

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