Can you set an object’s DefaultDisplayPropertySet in a PowerShell v2 script?

Question 1

Here is a blog post from Kirk Munro that explains how a script can set the DefaultDisplayPropertySet on its output objects:

Essential PowerShell: Define default properties for custom objects

His technique and example code doesn’t appear to work in PowerShell v2. (Note, I have PowerTab and PSCX installed–perhaps those could be interfering.)

Anyone know how to get this to work on PowerShell v2?

UPDATE:
Here’s the example from the blog post, which isn’t working for me (note, I’ve corrected the single quote characters):

$myObject = New-Object PSObject
$myObject | Add-Member NoteProperty Name 'My Object'
$myObject | Add-Member NoteProperty Property1 1
$myObject | Add-Member NoteProperty Property2 2
$myObject | Add-Member NoteProperty Property3 3
$myObject | Add-Member NoteProperty Property4 4
$myObject | Add-Member NoteProperty Property5 5
$myObject

  ## Output:
  # Name      : My Object
  # Property1 : 1
  # Property2 : 2
  # Property3 : 3
  # Property4 : 4
  # Property5 : 5

$defaultProperties = @('Name','Property2','Property4')
$defaultDisplayPropertySet = New-Object System.Management.Automation.PSPropertySet('DefaultDisplayPropertySet',[string[]]$defaultProperties)
$PSStandardMembers = [System.Management.Automation.PSMemberInfo[]]@($defaultDisplayPropertySet)
$myObject | Add-Member MemberSet PSStandardMembers $PSStandardMembers
$myObject

  ## Output:
  # Name      : My Object
  # Property1 : 1
  # Property2 : 2
  # Property3 : 3
  # Property4 : 4
  # Property5 : 5

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$myObject = New-Object PSObject

$myObject | Add-Member NoteProperty Name 'My Object'

$myObject | Add-Member NoteProperty Property1 1

$myObject | Add-Member NoteProperty Property2 2

$myObject | Add-Member NoteProperty Property3 3

$myObject | Add-Member NoteProperty Property4 4

$myObject | Add-Member NoteProperty Property5 5

$myObject

## Output:

# Name : My Object

# Property1 : 1

# Property2 : 2

# Property3 : 3

# Property4 : 4

# Property5 : 5

$defaultProperties = @('Name','Property2','Property4')

$defaultDisplayPropertySet = New-Object System.Management.Automation.PSPropertySet('DefaultDisplayPropertySet',[string[]]$defaultProperties)

$PSStandardMembers = [System.Management.Automation.PSMemberInfo[]]@($defaultDisplayPropertySet)

$myObject | Add-Member MemberSet PSStandardMembers $PSStandardMembers

$myObject

## Output:

# Name : My Object

# Property1 : 1

# Property2 : 2

# Property3 : 3

# Property4 : 4

# Property5 : 5

The output should not be the same after adding DefaultDisplayPropertySet (i.e., it should only have Name, Property2, and Property4).

Question 2

Can you give an example of your non-working code? This should work perfectly in v2, if not, you’ve found a bug.

UPDATE:

(removed comments about quoting)

I’ve confirmed with the powershell team that this is indeed a regression (bug).

You can vote on the issue’s importance to you here:

https://connect.microsoft.com/PowerShell/feedback/ViewFeedback.aspx?FeedbackID=487938

Thanks,

-Oisin
(powershell MVP)

Can you set an object’s DefaultDisplayPropertySet in a PowerShell v2 script?

Question:

Answer:

Source:

Can you set an object’s DefaultDisplayPropertySet in a PowerShell v2 script? by stackoverflow.com licensed under CC BY-SA | With most appropriate answer!

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