graemef.com

Following on from my previous post, here’s an
implementation of Rob’s suggestion.
The following WiX fragment will run NGen 2.0 on your
application without showing a command prompt:

<!-- Put the "wixca.dll" library in the binary table so it can be used by the following custom actions -->
<Binary Id="wixca"
	src="..\Lib\WiX\ca\wixca.dll"/>

<!-- Custom action to generate the command line to run "NGen install" -->
<CustomAction Id="MyApp.exeNGenInstall.Command"
	      Property='QtExecCmdLine'
	      Value='"[WindowsFolder]Microsoft.NET\Framework\v2.0.50215\ngen.exe" install "[#MyApp.exe]" /queue:2 /nologo /silent'/>

<!-- Custom action to perform the "NGen install" -->
<CustomAction Id="MyApp.exeNGenInstall"
	BinaryKey="wixca"
	DllEntry="CAQuietExec"
	Return="check" />

<!-- Custom action to generate the command line to run "NGen uninstall" -->
<CustomAction Id="MyApp.exeNGenUninstall.Command"
	Property="QtExecCmdLine"
	Value='"[WindowsFolder]Microsoft.NET\Framework\v2.0.50215\ngen.exe" uninstall "[#MyApp.exe]" /nologo /silent' />

<!-- Custom action to perform the "NGen uninstall" (we can ignore the result of this) -->
<CustomAction Id="MyApp.exeNGenUninstall"
	BinaryKey="wixca"
	DllEntry="CAQuietExec"
	Return="ignore" />

<InstallExecuteSequence>
	<!-- If not installed, generate the install command and execute it (after finializing the install) -->
	<Custom Action="MyApp.exeNGenInstall.Command"
		After="InstallFinalize">
		NOT Installed
	</Custom>
	<Custom Action="MyApp.exeNGenInstall"
		After="MyApp.exeNGenInstall.Command">
		NOT Installed
	</Custom>

	<!-- If installed, generate the uninstall command and execute it (before removing any files) -->
	<Custom Action="MyApp.exeNGenUninstall.Command"
		Before="MyApp.exeNGenUninstall">
		Installed
	</Custom>
	<Custom Action="MyApp.exeNGenUninstall"
		Before="RemoveFiles">
		Installed
	</Custom>
</InstallExecuteSequence>

You’ll need to modify the path to your copy of wixca.dll, change
the path to ngen.exe (if you’re not using .NET 2.0 Beta 2) and
change MyApp.exe to the Id of the file that is the "root" of your
application.

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