functions/object/Get-PRTGObjectProperty.ps1

function Get-PRTGObjectProperty {
    <#
    .Synopsis
       Get-PRTGObjectProperty
 
    .DESCRIPTION
       Get a specific property from an PRTG object out of the sensor tree
 
    .NOTES
       Author: Andreas Bellstedt
 
    .LINK
       https://github.com/AndiBellstedt/PoShPRTG
 
    .EXAMPLE
        Get-PRTGObjectProperty -ObjectId 1 -PropertyName Name, tags
 
        Get name and tags from object with ID 1
 
    .EXAMPLE
        Get-PRTGObject -Name "Myobject" | Get-PRTGObjectProperty -Name Name, status
 
        Get name and status from object "Myobject"
    #>

    [CmdletBinding(
        DefaultParameterSetName = 'ReturnAll',
        SupportsShouldProcess = $false,
        ConfirmImpact = 'Low'
    )]
    [OutputType([PSCustomObject])]
    Param(
        # ID of the object to pause/resume
        [Parameter(Position = 0, Mandatory = $true, ValueFromPipeline = $true, ValueFromPipelineByPropertyName = $true)]
        [ValidateNotNullOrEmpty()]
        [ValidateScript({ $_ -gt 0 })]
        [Alias('objID', 'ID')]
        [int[]]
        $ObjectID,

        # Name of the object's property to get
        [Parameter(Position = 1, ParameterSetName = 'Name')]
        [Alias('Name')]
        [ValidateNotNullOrEmpty()]
        [string[]]
        $PropertyName,

        # SensorTree from PRTG Server
        [ValidateNotNullOrEmpty()]
        [xml]
        $SensorTree = $script:PRTGSensorTree
    )

    Begin {}

    Process {
        foreach ($ID in $ObjectID) {
            Write-Log -LogText "Get object details from object ID $ID." -LogType Query -LogScope $MyInvocation.MyCommand.Name -NoFileStatus -DebugOutput
            try {
                $Object = Get-PRTGObject -ID $ID -SensorTree $SensorTree -Verbose:$false -ErrorAction Stop
            } catch {
                Write-Log -LogText $_.exception.message -LogType Error -LogScope $MyInvocation.MyCommand.Name -NoFileStatus -Error
                return
            }

            $ObjectProperty = $Object | Get-Member -MemberType Property, NoteProperty | Select-Object -ExpandProperty Name
            $hash = @{}
            if ($PropertyName) {
                # Parameterset: Name
                foreach ($item in $PropertyName) {
                    $PropertiesToQuery = $ObjectProperty | Where-Object { $_ -like $item }
                    foreach ($PropertyItem in $PropertiesToQuery) {
                        if ($hash.$PropertyItem) {
                            Write-Log -LogText "Property $PropertyItem already existis! Skipping this one." -LogType Warning -LogScope $MyInvocation.MyCommand.Name -NoFileStatus -DebugOutput
                        } else {
                            Write-Log -LogText "Get property $PropertyItem from object ID $ID" -LogType Info -LogScope $MyInvocation.MyCommand.Name -NoFileStatus -DebugOutput
                            $hash.Add($PropertyItem, $object.$PropertyItem)
                        }
                    }
                }
                $result = New-Object -TypeName PSCustomObject -Property $hash
            } else {
                #Parameterset: ReturnAll
                Write-Log -LogText "Get all properties from object ID $ID" -LogType Info -LogScope $MyInvocation.MyCommand.Name -NoFileStatus -DebugOutput
                foreach ($PropertyItem in $ObjectProperty) {
                    $hash.Add($PropertyItem, $object.$PropertyItem)
                }
            }
            $result = New-Object -TypeName PSCustomObject -Property $hash

            Write-Log -LogText "Found $($result.count) $(if($result.count -eq 1){"property"}else{"properties"}) in object ID $ID" -LogType Info -LogScope $MyInvocation.MyCommand.Name -NoFileStatus -DebugOutput
            $result
        }
    }

    End {}
}