So does someone have the DLL or the code that does what is listed below that is 
working?   I am trying to work on a complex Wix Installer and would just like 
to have XML read capability in my .WXS  code so I can continue.  
 

-----Original Message-----
From: John Cooper [mailto:jocoo...@jackhenry.com] 
Sent: Friday, March 06, 2015 10:23 AM
To: General discussion about the WiX toolset.
Subject: Re: [WiX-users] Custom Action to Read XML value

Yes.  It's not very complicated.  The specific steps in the innermost custom 
action (there is another custom action that drives this one from a table) are:

1) load path to XML file from property;
2) load XPATH from property;
3) create an XmlDocument instance
4) use the TrySafeLoad method to see if I can load the XML file, exit if I can't
5) get an XmlNode using SelectSingleNode on the XPATH previously loaded;
6) if the XmlNode is null, store a default value;
7) else process for attribute, element, or inner text and load the property;
8) exit

The code following this flow has been used in production for over two years.

--
John Merryweather Cooper
Senior Software Engineer | Integration Development Group | Continuing 
Development Jack Henry & Associates, Inc.® | Lenexa, KS  66214 | Ext:  431050 
|jocoo...@jackhenry.com



-----Original Message-----
From: Davis, Jeff [mailto:jda...@nanometrics.com]
Sent: Friday, March 6, 2015 12:02 PM
To: General discussion about the WiX toolset.
Subject: [WiX-users] Custom Action to Read XML value

It seems like the answer to every question about reading XML value using Wix is 
to write a custom action.  I have found a couple of solutions that I have tried 
with no success.   Does someone have a working XML Search custom action that 
you pass a XML filename and a XPath value and it will populate a Property value 
with its results.   I don't need to add an extension with lots of other actions 
or an action that a lot more than what I need.  Although if you're using 
something that works I'd take it.

I need it to be able to evaluate complex XPath expressions with valid XST 
functions like substring-before() so I can parse Values.

Has someone got something that works for them that they don't mind sharing so I 
don't have to write my own?  (which is not my strong point)



This solution is what I am looking for but I can't get it to work for me.

http://www.codeproject.com/Articles/865604/Writing-a-Wix-Extension-to-Read-XML-Files

When I try to build the project I get several errors.

Error 1 The command "copy 
".\Wix.XmlSearch_src\XmlSearch.WixLib\bin\Debug\XmlSearch.wixlib" 
".\Wix.XmlSearch_src\Resources" /y" exited with code 1. Wix.XmlSearch

If I add this to the Wix.Test.Setup Product.wxs

<xmlsearch:XmlSearch Id="Test1" File="$(var.ProjectDir)Test.xml" 
XPath="/Testdata/testnode/@Value"/>

I get this error

Error 1 The Property element contains an unhandled extension element 
'xmlsearch:XmlSearch'. Please ensure that the extension for elements in the 
'http://schemas.rottedfrog.co.uk/wix/XmlSearch' namespace has been provided.

If I try to add the binary to a project I get this error

A reference to C:\Program Files (x86)\WiX Toolset v3.9\bin\\Wix.WmlSearch.dll 
could not be added. Please make sure tha tthe file is accessible, and that it 
is a valid Wix reference.


I have tried this one which works pretty well

https://bitbucket.org/nirbar1/panelswwixextension

But there is a bug in the XPath expression evaluation that won't allow 
functions like substring-before()  etc to be used.



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