[wix-users] Change burn's ExePackage InstallCommand value conditionally

[Phill Hogland]

The Burn engine does support changing the value of a Burn Variable in your BA.  In the bundle declare a Variable with the Variable/@bal:Overridable='yes'.  In your BA code make use of the related methods for reading and changing Engine Variables for string, secure string, number, and version objects.


Read a string variable (in C#):

result = myBA.Engine.StringVariables[variableName];

change it:

this.Wix.Engine.StringVariables[variableName] = value;


 If using the WixStdBA then look at the example code which is in the wix source for a BAFunctions.dll in src/burn/Samples.


Typically the change you described would be made in a DetectComplete handler or a PlanBegin handler, but there are other options.

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From: wix-users <wix-users-bounces at lists.wixtoolset.org> on behalf of erwin john publico <erwinjohnpublico at yahoo.com>
Sent: Wednesday, February 8, 2017 3:43:45 AM
To: WiX Toolset Users Mailing List
Subject: [wix-users] Change burn's ExePackage InstallCommand value conditionally

Hi All,
I have to change the arguments that I pass to an ExePackage during install depending on some conditions. I can pass arguments through InstallCommand attribute but how can I change the value I set there conditionally?
I tried adding a variable as the value in InstallCommand but there aren't available commands such as SetVariable that can change my variable's value conditionally. Is there a way to do this? Currently, What I ended up with is having the same ExePackage written but have different InstallCommand and different InstallCondition - which is not really neat looking.
Thanks,Erwin

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