Validate if a type is loaded in PowerShell

I’m trying to determine if a type is already loaded in PowerShell. Example code below:

try {
    $httpHandler = New-Object -TypeName System.Net.Http.HttpClientHandler
} catch {
    Write-Output -InputObject "Loading type.."
    Add-Type -AssemblyName "System.Net.Http"
} # This works OK, but not ideal

# Example 1 -- check if the type is loaded
$types = Get-TypeData
if ($types | Where-Object {$_.TypeName -eq "System.Net.Http"}) {
    Write-Output -InputObject "Loaded"
} else {
    Write-Output -InputObject "Not loaded"
}
# The above returns 'Not loaded' in all cases

# Example 2 -- check if the type is loaded
[Type]::GetType("System.Net.Http", $false)
# Returns no output

Is there a way to check if a type is loaded/imported before calling Add-Type? There is no Get-Type Cmdlet that I can find

>Solution :

You can search for loaded types like this:

[AppDomain]::CurrentDomain.GetAssemblies() |
    ForEach-Object {$_.GetTypes()} |
    Where-Object Name -eq 'FileInfo'

Which gives output like this:

IsPublic IsSerial Name     BaseType                
-------- -------- ----     --------                
True     True     FileInfo System.IO.FileSystemInfo