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Editorial Team
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Asked: 2026-06-15T11:16:54+00:00

Can I define a WiX property that will have a value computed from other

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Can I define a WiX property that will have a value computed from other properties? For example, I have two properties:

<Property Id="SEARCH1">
  <RegistrySearch ... />
</Property>

<Property Id="SEARCH2">
  <RegistrySearch ... />
</Property>

I want to avoid copy-pasting a condition like SEARCH1 = "" AND SEARCH2 = "" across multiple places in my WiX source. Defining a derived property does not seem to work:

<Property Id="FOUND_NOTHING">
  SEARCH1 = "" AND SEARCH2 = ""
</Property>

Is there a valid way to define such a derived property to use just FOUND_NOTHING as a condition?

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1 Answer

  1. Editorial Team

    With WiX you can do this by authoring <SetProperty> element. Under the hood, it creates a special custom action and schedules it appropriately.

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