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POHow to reuse a Wix custom action?
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  1. POHow to reuse a Wix custom action?
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    copied!<p>I have been experimenting with Custom Actions in order to encrypt part of the App.Config file on installation (as per <a href="https://stackoverflow.com/questions/306992/how-do-i-encrypt-app-config-file-sections-during-install-with-wix">how-do-i-encrypt-app-config-file-sections-during-install-with-wix</a>) I have the basic CA process working but I am missing something in my understanding of Wix/msi installations.</p> <p>My Wix configuration for the CA looks a bit like </p> <pre><code>&lt;Binary Id="ENCRYPTSECTIONCADLL" SourceFile="(path to CA DLL)"/&gt; &lt;Property Id="APPCONFIGPATH" Value="(Path to Exe file)" /&gt; &lt;Property Id="SECTIONTOENCRYPT" Value="(Section of App.Config to Encrypt)" /&gt; &lt;CustomAction Id="ENCRYPT_SECTION" BinaryKey="ENCRYPTSECTIONCADLL" DllEntry="EncryptConfig" Execute="immediate" Return="check" HideTarget="no" Impersonate="no" /&gt; &lt;InstallExecuteSequence&gt; &lt;Custom Action="ENCRYPT_SECTION" After="InstallFinalize" /&gt; &lt;/InstallExecuteSequence&gt; </code></pre> <p>And inside the CA are explicit references to </p> <pre><code>session["APPCONFIGPATH"] session["SECTIONTOENCRYPT"] </code></pre> <p>Now for my question. What I want to do is to execute my CA twice but supply a different value to the SECTIONTOENCRYPT properties that are fed into it. If I was to invent my own Wix syntax I would express my desires as:</p> <pre><code>&lt;InstallExecuteSequence&gt; &lt;Custom Action="ENCRYPT_SECTION" After="InstallFinalize" APPCONFIGPATH = "(Path to Exe File)" SECTIONTOENCRYPT = "(Section #1)" /&gt; &lt;Custom Action="ENCRYPT_SECTION" After="InstallFinalize" APPCONFIGPATH = "(Path to Exe File)" SECTIONTOENCRYPT = "(Section #2)" /&gt; &lt;/InstallExecuteSequence&gt; </code></pre> <p>I know this is just fancy on my part, but I can't seem to get my head around expressing this in the Wix's declarative format. The only valid idea I can come up with is to concatenate the SECTIONTOENCRYPT strings and parse them out inside the CA. That would work, but it just doesn't feel right to me - although that may be because I don't have any experience in this area.</p> <p>Can anyone suggest a better way of doing things?</p> <p><strong>Edit</strong></p> <p>It just struck me that the main use case of this is when I have a single Wix installer that installs multiple programs in which I want to encrypt the App.Config file</p>
 

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