[wix-users] Error accessing variable in include file

Phill Hogland phill.hogland at rimage.com
Mon Apr 18 06:15:43 PDT 2016

The approach I use is to unload my .wixproj file and edit it adding the following PropertyGroup, after the last 'configuration' PropertyGroup and before any of the ItemGroup(s):

.... (if the above path includes a trailing backslash, then use two backslashes

Then in the .wxs file do:
<?include BuildVariables.wxi ?>

At compile time the log output will include a list of all the paths at which the compiler is looking for .wxi files so you can validate that the Environment variable $(RootDir) is being resolved as you wish.

From: wix-users <wix-users-bounces at lists.wixtoolset.org> on behalf of Drummond, Jeffrey <Jeffrey.Drummond at chasepaymentech.com>
Sent: Friday, April 15, 2016 3:34:28 PM
To: WiX Toolset Users Mailing List
Subject: [wix-users] Error accessing variable in include file


I am receiving the following error when trying to access a variable in
an included file.  This should be simple, but it isn't so far:

D:\Build\Development\Company\BuildServerConfigurationTest.targets (569): The expression """.PROJECTTOPACKAGEFOLDERVARIABLE" cannot be evaluated. Method 'System.String.PROJECTTOPACKAGEFOLDERVARIABLE' not found.

My include file:

<?xml version="1.0" encoding="utf-8"?>

It is implemented above the <Product> tag in my main targets file:

<?include $(RootDir)Development\Company\BuildVariables.wxi ?>

And I am testing getting the variable here:

<Message Text="The value of the variable from the include file is: $(var.PROJECTTOPACKAGEFOLDERVARIABLE)" />

Thanks in advance for your help.

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