Check .Net framework on the filesystem and registry

List-InstalledDotNetFramework.ps1

# Check installed .Net versions
#   ref: https://gist.github.com/MyITGuy/b4497f042d59f1c7b91d

# Using filesystem
Write-Host "Checking Filesystem ..."
$x= Get-ChildItem -Path "$($env:WINDIR)\Microsoft.NET\Framework*" |
    ForEach-Object { Get-ChildItem -Path "$($_.PSPath)" |
        Where-Object {$_.Name.StartsWith('v') -and $_.PSIsContainer -eq $true -and ((Test-Path -Path "$($_.FullName)\mscorlib.dll" -PathType Leaf) -eq $true)}
    } | Select-Object @{Name="Version";Expression={$_.Name.TrimStart('v')}},@{Name="Bitness";Expression={if (!$_.Parent.ToString().TrimStart('Framework')) {[int]32} else {[int]$_.Parent.ToString().TrimStart('Framework')}}} |
    Sort-Object -Property Version;

$x | Format-Table -AutoSize;

# Using Registry
Write-Host "Checking Registry ..."
$y= Get-ChildItem -Path 'HKLM:\SOFTWARE\Microsoft\NET Framework Setup\NDP' -Recurse |
    Get-ItemProperty -Name Version, Release -ErrorAction SilentlyContinue | 
    Where-Object { $_.PSChildName -match '^(?!S)\p{L}' } |
    Select-Object -Property Version, Release |
    Sort-Object -Property Version;

$y | Format-Table -AutoSize;