[wix-users] Silent/Passive running of .NET Framework pre-req

[Patterson, Brent]

Ah, simply adding /passive to the call of installer.exe will start .net pre-req installation automatically.  However it's still visible even though /silent was specified, but I think we can live with that.

-----Original Message-----
From: wix-users [mailto:wix-users-bounces at lists.wixtoolset.org] On Behalf Of Patterson, Brent
Sent: Wednesday, April 5, 2017 3:13 PM
To: wix-users at lists.wixtoolset.org
Subject: [wix-users] Silent/Passive running of .NET Framework pre-req

We ran into an issue with our installer.  If the user wants to install our product silently, they can call our exe with /silent parameter.  Our exe is a bootstrapper bundle that handles everything.  However, we discovered that if the 4.6 .NET framework isn't installed, the pre-req check will show a dialog for installing it.  Since the installer is running silently, it should proceed to install the .NET framework pre-req without showing any prompt or require user interaction.

I searched and found this site: http://stackoverflow.com/questions/19839600/wix-install-prerequisites-and-3rd-party-applications

In it, he had this:
<!-- Install .NEt 4.0 -->
  <PackageGroup Id="Netfx4Full">
    <ExePackage Id="Netfx4Full"
               DisplayName="Microsoft .NET Framework 4.0"
                Compressed="no"
                Cache="yes"
                PerMachine="yes"
                Permanent="yes"
                Protocol="netfx4"
                Vital="yes"
                SourceFile=".\prerequisites\dotNetFx40_Full_x86_x64.exe"
                InstallCommand="/passive /norestart"
                DetectCondition="Netfx4FullVersion AND (NOT VersionNT64 OR Netfx4x64FullVersion)" />
  </PackageGroup>

The key is "InstallCommand="/passive /norestart""

The problem is that our .NET installer is a web downloader, and I use this in the chain:
<PackageGroupRef Id="NetFx46Web"/>

I fear if I try and add "PackageGroup" that defines NetFx46Web, it'd override the existing parameters.  I just want something like this:

    <PackageGroup Id="NetFx46Web">
      <ExePackage Id="NetFx46Web"
                  InstallCommand="[COMMANDLINE_ARGS]" />
    </PackageGroup>

Where COMMANDLINE_ARGS will be defined in a variable elsewhere.  Can I override specific parameters without breaking the rest?  Or do I need to copy and paste the original PackageGroup from WiX source base?

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