How to detect if a Server Role for WebServer(IIS) is installed + features

[pmatlock]

I am creating an InstallScriptMSI project, and I need to a way to verify on a SQL Server 2008 R2 server that
1. a Server Role for Web Server (IIS) has been installed
2. various features have been installed on this server (i.e)
a. .NET Framework 3.5.1 Features
b. WCF Activation

Any help/direction would be greatly appreciated.

[DanCla]

I think the best thing to do is to look for registry keys. This is what I do in one of my projects.

function ScriptingToolsCheck(hMSI)
	STRING szKey, szName, svValue, szMsg; 
	NUMBER nvType, nvSize; 
begin 
	RegDBSetDefaultRoot(HKEY_LOCAL_MACHINE); 
	szKey = "SOFTWARE\\Microsoft\\InetStp\\Components";          
	szName = "ManagementScriptingTools";
	nvType = REGDB_STRING;
	if(RegDBGetKeyValueEx(szKey, szName, nvType, svValue, nvSize) < 0) then
		szMsg = "The setup needs IIS Management Scripts and Tools to be installed.  ";
		szMsg = szMsg + "Please add this role in Server Manager and then run this setup again.";     
		MessageBox(szMsg, SEVERE);
		abort
	endif;
	RegDBSetDefaultRoot(HKEY_CLASSES_ROOT);
end; 

[girishkatti123]

you can use the "Is" operation to check .dotnet framework .
You could also automate IIS installation by using the command line options and passing a Text file to it.
sysocmgr /i:c:\windows\info\sysoc.inf /u:c:\iis.txt
Attached the test file for your reference.

[lonewolf32]

Is there any chance that the "Is" function would find the Framework version 3.5 and not 3.5.1? My installer needs 3.5.1, is it possible that only 3.5 would be installed on a Server 2008 or Server 2008 R2 box? The reason I ask is because the Is function does not have a REGDB_KEYPATH_DOTNET_35_SP define.