.NET 4.0 install check

[ghost]

The following is what is being used to check if .NET 4.0 is installed (from Check-Chocolatey.ps1):

if(Is64Bit) {$fx="framework64"} else {$fx="framework"}
if(!(test-path "$env:windir\Microsoft.Net\$fx\v4.0.30319"))

This check fails if .NET 4.0 is installed on a Windows 7 machine and then uninstalled. The v4.030319 folder remains with some .tlb files.

It is better to check for the presence of the following registry key: HKLM:\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4. This will indicate that either the client or full .NET version is installed. If there is a need to check that .NET 4.0 full is installed then use: HKLM:\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full.

[cam1985]

As per my last message in Issue #97

I have completed a powershell module that will let you know what versions of dot net are installed on a machine and with very little modification you can run your checks against that. This retrieves all versions/releases installed.

@mwrock if you think it is something you would want implementing in boxstarter let me know and I will set to work on making it do what you want.

https://github.com/cam1985/Get-DotNet-Information

[mwrock]

@cam1985 your module looks great. I just need to know if the user has 4.0 or greater installed. If you want to add a PR to Check-Chocolatey.ps1 with your Get-DotNet-LatestInstalledVersion function I'd gladly accept. Another option is to just pull down your module in my build and distribute with boxstarter. A couple things need to happen for that to work well.

1. Mind adding a license? Preferably Apache 2 or MIT.
2. Publishing your module on chocolatey or powershell gallery where my build could grab it?