How to check if asp.net mvc 3 is installed?

Question

I'm trying to write a powershell script that would install asp.net mvc 3 if it is not already installed. How do i check if a specific version of asp.net mvc 3 is installed?

Answer 1

I think you can't change the location of the install folder, so you could probably just:

test-path "${Env:ProgramFiles(x86)}\Microsoft ASP.NET\ASP.NET MVC 3"

Answer 2

Another way (unfortunately quite a bit slower) is to query WMI:

$res = Get-WmiObject Win32_Product | Where {$_.Name -match 'ASP\.NET MVC 3'}
if ($res -ne $null) { ... }