New-Object add-member - cannot add a member - powershell

Question

I have a problem :( I have many errors when I add New object with the same name of property which previously Object .

"Add-Member : Cannot add a member with the name "ServerName" because a member with that name already exists. To overwrite the member anyway, add the Force par ameter to your command."

it works but with errors;) Have someone a solution for me ??

Below example code :

$OutputObj = @()

$OutputObj += New-Object -TypeName PSobject
$OutputObj | Add-Member -MemberType NoteProperty -Name ServerName -Value "server1"
$OutputObj | Add-Member -MemberType NoteProperty -Name Status -Value "online"
$OutputObj | Add-Member -MemberType NoteProperty -Name Uptime -Value "01:20"

$OutputObj += New-Object -TypeName PSobject
$OutputObj | Add-Member -MemberType NoteProperty -Name ServerName -Value "server2"
$OutputObj | Add-Member -MemberType NoteProperty -Name Status -Value "online"
$OutputObj | Add-Member -MemberType NoteProperty -Name Uptime -Value "01340"

Micky Balladelli · Accepted Answer · 2017-11-12 12:35:49Z

5

You are adding the member on the array, not on the object. Try the following:

$OutputObj = @()

$NewObj = New-Object -TypeName PSobject
$NewObj | Add-Member -MemberType NoteProperty -Name ServerName -Value "server1"
$NewObj | Add-Member -MemberType NoteProperty -Name Status -Value "online"
$NewObj | Add-Member -MemberType NoteProperty -Name Uptime -Value "01:20"

$OutputObj += $NewObj

$NewObj = New-Object -TypeName PSobject
$NewObj | Add-Member -MemberType NoteProperty -Name ServerName -Value "server2"
$NewObj | Add-Member -MemberType NoteProperty -Name Status -Value "online"
$NewObj | Add-Member -MemberType NoteProperty -Name Uptime -Value "01340"
$OutputObj += $NewObj

Alernatively, I would do the following:

$OutputObj = @()
$OutputObj += New-Object -TypeName PSobject -Property @{
    ServerName = "server1"
    Status = "Online"
    Uptime = "01:20"
}


$OutputObj += New-Object -TypeName PSobject -Property @{
    ServerName = "server2"
    Status = "Online"
    Uptime = "01340"
}

Since Add-Member destroys and generates a new object each time it is used.

edited Nov 12, 2017 at 12:35

answered Nov 12, 2017 at 12:17

Micky Balladelli

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2 Comments

mino Over a year ago

But i need all in one object

mino Over a year ago

In your solution output of $OutpuObj is only the last member - server2, I need server1 and server2 in output

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