Cannont Add-Member as the Member with the Name Exists

Ca开发者_运维技巧n someone help me out with getting the disk info? I have 3 disks but I'm unable to get their information using add member.

I get an error:

"Add-Member : Cannot add a member with the name "Disks" because a member with that name already exists. If you want to overwrite the member anyway, use the Force parameter to overwrite it."

This is my code:

function  Get-Inven {

param([string[]]$computername)

#Import-Module ActiveDirectory

foreach ($computer in $computername) {
    $disks = Get-WmiObject -Class Win32_LogicalDisk -ComputerName $computer -Filter 'DriveType=3'
    $os = Get-WmiObject -Class Win32_OperatingSystem -ComputerName $computer
    #$comp = Get-ADComputer -Filter { cn=$computer }

    $info = @{
        'ComputerName'=$computer;
        'OSVersion'=$os.caption;
        'DnsHostName'=$comp.dnshostname
    }

    $obj = New-Object -TypeName PSObject -Property $info

    foreach ($disk in $disks) {
        $info = @{
            'DriveLetter'=$disk.deviceID;
            'FreeSpace'=($disk.freespace / 1MB -as [int])
        }
        $diskobj = New-Object -TypeName PSObject -Property $Info
        $obj | Add-Member -MemberType NoteProperty -Name Disks -Value $diskobj
    }
}

}

You can still set the Name property if you add the -Force parameter. You should also add the -PassThru switch parameter to emit the object back to the pipeline:

$obj | Add-Member -MemberType NoteProperty -Name Disks -Value $diskobj -Force -PassThru

UPDATE:

In my opinion you can simplify the function (no add-member calls):

foreach ($computer in $computername) {
    $disks = Get-WmiObject -Class Win32_LogicalDisk -ComputerName $computer -Filter 'DriveType=3'
    $os = Get-WmiObject -Class Win32_OperatingSystem -ComputerName $computer
    #$comp = Get-ADComputer -Filter { cn=$computer }

    $info = @{
        ComputerName=$computer
        OSVersion=$os.caption
        DnsHostName=$comp.dnshostname
        FreeSpaceMB= ($disks | foreach { "{0},{1:N0}" -f $_.Caption,($_.freespace/1MB) }) -join ';'
    }

    New-Object -TypeName PSObject -Property $info 
}

Since there are multiple disks, you need to create the disk property as an array, then add each disk to the array. Also, remember to output $obj at the end of the $computername foreach.

function  Get-Inven {

param([string[]]$computername)
$computername = 'localhost'
foreach ($computer in $computername) {
    $disks = Get-WmiObject -Class Win32_LogicalDisk -ComputerName $computer -Filter 'DriveType=3'
    $os = Get-WmiObject -Class Win32_OperatingSystem -ComputerName $computer
    #$comp = Get-ADComputer -Filter { cn=$computer }

    $info = @{
        'ComputerName'=$computer;
        'OSVersion'=$os.caption;
        'DnsHostName'=$comp.dnshostname
    }

    $obj = New-Object -TypeName PSObject -Property $info 
    $obj | Add-Member -MemberType NoteProperty -Name Disks -Value @()
    $obj | Add-Member -MemberType ScriptProperty -Name DisksList -Value {
        ($this.Disks|%{$_.DriveLetter + ',' + $_.FreeSpace}) -join ';'
    }
    foreach ($disk in $disks) {
        $info = @{
            'DriveLetter'=$disk.deviceID;
            'FreeSpace'=($disk.freespace / 1MB -as [int])
        }
        $diskobj = New-Object -TypeName PSObject -Property $Info
        $obj.Disks += $diskobj
    }
    $obj
}
}

$result = get-inven localhost
$result| select "OSVersion","DnsHostName","ComputerName","DisksList"|ConvertTo-Csv