CODEWITHSUNDEEP
wixregistrywindows-installer
flayn
flayn

Reputation: 5322

Write to registry if parameter is specified

I have a setup that has an optional parameter which should be written to the registry is supplied. I know that i can write to the registry using this:

<DirectoryRef Id="TARGETDIR">
    <Component Id="RegistryEntries" Guid="*">
        <RegistryKey Root="HKCU"
                     Key="Software\Microsoft\Test"
              Action="create">
            <RegistryValue Type="string" Value="[THEPARAMETER]"/>
        </RegistryKey>
    </Component>
</DirectoryRef>

But this will override the existing registry entry with an emtpy string, if the parameter is not specified!

I would like to know how to set the registry key ONLY if the parameter is specified. I have looked into custom actions and WriteRegistryValues, but I haven't found anything helpful.

Upvotes: 2

Views: 371

Answers (1)

123r789
123r789

Reputation: 1790

Add the condition like this

<Condition>(THEPARAMETER AND (NOT Installed))</Condition>
<RegistryValue Type="string" Value="[THEPARAMETER]"/>

Upvotes: 3

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