Powershell convert Array of Objects into PSCustomObject

Question

I would like to convert this array of objects

Name    CIDR
----    ----
sdc-MO  10.92.18.136/20
sdc-RM  10.77.6.34/20

into a single [PSCustomObject]

sdc-MO           sdc-RM
-------           -------
{10.92.18.136/20} {10.77.6.34/20}

Please suggest any easy way.. Thanks

Edit the question and show how the array is assigned its values. Powershell arrays don't ave headers, so having Name and CIDR means that either it's not an array in the first case, or it's an array of arrays piped to format-table or something different altogether. — vonPryz
– vonPryz, Commented Sep 9, 2020 at 5:15
@vonPryz What? An array containing two objects each with a Name and CIDR property would display exactly like that by default — Mathias R. Jessen
– Mathias R. Jessen, Commented Sep 9, 2020 at 11:15

Mathias R. Jessen · Accepted Answer · 2020-09-09 11:27:27Z

0

Add each object to a hashtable or other dictionary dictionary type, then use the dictionary to create the object (each entry will become a separate property):

$array = @(
  [pscustomobject]@{ Name = 'sdc-MO'; CIDR = '10.92.18.136/20' }
  [pscustomobject]@{ Name = 'sdc-RM'; CIDR = '10.77.6.34/20' }
)

# Prepare a new dictionary to hold the properties
$newProperties = [ordered]@{}

foreach($inputObject in $array){
  # If we don't already have a property with the given name, 
  # create a new entry in the dictionary
  if(-not $newProperties.Contains($inputObject.Name)){
    $newProperties.Add($inputObject.Name, @())
  }

  # Add the `CIDR` value to the corresponding property name
  $newProperties[$inputObject.Name] += $inputObject.CIDR
}

$newObject = [pscustomobject]$newProperties

$newObject will be like what you described in the question:

PS C:\> $newObject

sdc-MO            sdc-RM
------            ------
{10.92.18.136/20} {10.77.6.34/20}

answered Sep 9, 2020 at 11:27

Mathias R. Jessen

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2 Comments

Mathias R. Jessen Over a year ago

@iRon Not sure I understand what OP did wrong? His first sample is exactly what you'd expect the default formatting of an array containing two objects each with a Name and CIDR property to look like.

Mathias R. Jessen Over a year ago

@iRon I made a slight edit to OPs post, might do the trick :)

js2010 · Accepted Answer · 2025-06-04 15:10:07Z

0

It seems like what you want is to take an object array and make a hashtable out of it to lookup each cidr. The question could be rephrased.

$list = 'Name,CIDR
sdc-MO,10.92.18.136/20
sdc-RM,10.77.6.34/20' | convertfrom-csv

$list | % { $hash = @{} } { $hash[$_.Name] = $_.CIDR }

$hash['sdc-mo']
10.92.18.136/20

$hash['sdc-rm']
10.77.6.34/20

edited Jun 4 at 15:10

answered Jun 4 at 14:48

js2010

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