Iterating through key names from a PSCustomObject

Question

I am writing a script for my site that utilizes a JSON configuration file. The JSON is similar to the following:

\"Groups\": {
    \"GroupOne\": {
        \"Nami         


        

Answer 1

Solution

I'm not sure how early of a version you can do this with, but it works for me in PowerShell 5.1... Feel free to give it a try in earlier versions:

$ipinfo = Invoke-WebRequest 'http://ipinfo.io/json' -UseBasicParsing | ConvertFrom-Json
foreach ($info in $ipinfo.PSObject.Properties) {
    $info.Name
    $info.Value
    '--' # <-- Seeing this double hash proves we're iterating fully.
}

Outputs

ip
1.2.3.4
--
hostname
No Hostname
--
city
Denton
--
region
Texas
--
country
US
--
loc
33.2148,-97.1331
--
org
AS589 University of North Texas
--
postal
76203
--

This is all done with PowerShell 4.0; ConvertTo-Json and ConvertFrom-Json were introduced in PowerShell 3.0; I haven't tested PowerShell 3.0 or 5.0.

---

Another Example

Try it for yourself with another example:

$ipinfo = ConvertFrom-Json (Invoke-WebRequest 'http://ipinfo.io/json' -UseBasicParsing)
foreach ($info in ($ipinfo.PSObject.Members | ?{ $_.MemberType -eq 'NoteProperty'})) {
    $info.Name
    $info.Value
    '--'
}

Outputs

ip
1.2.3.4
--
hostname
No Hostname
--
city
Denton
--
region
Texas
--
country
US
--
loc
33.2148,-97.1331
--
org
AS589 University of North Texas
--
postal
76203
--

---

This and other PowerShell looping are available on my blog.