How to define installation folder from command line parameter in Wix installer

Question

I install my application to a specific folder using the below wxs code:

<Directory Id="TARGETDIR" Name="SourceDir">
        <Directory Id="ProgramFilesFolder">
            <Directory Id="INSTALLDIR" Name="CompanyName">
                <Directory Id="SUBDIR" Name="Application Launcher">
                    <Component Id="ApplicationFiles" Guid="*">
                        <File Name="app.exe" Id="AppFile1" Source="app.exe" Vital="yes" />
                    </Component>
                </Directory>
            </Directory>
        </Directory>
</Directory>

I want to specify the installation folder with a parameter to be given from the command line like below:

msiexec.exe /i setup.msi PATH=C:\MyCompany\Folder\ /qn

Thanks a lot.

Answer 1

<Directory Id="TARGETDIR" Name="SourceDir">
        <Directory Id="ProgramFilesFolder">
            <Directory Id="CompanyFolder" Name="CompanyName">
                <Directory Id="INSTALLLOCATION" Name="Application Launcher">
                    <Component Id="ApplicationFiles" Guid="*">
                        <File Name="app.exe" Id="AppFile1" Source="app.exe" Vital="yes" />
                    </Component>
                </Directory>
            </Directory>
        </Directory>
</Directory>

For your install:

msiexec /I setup.msi INSTALLLOCATION=C:\Somewhere /qn