Scripts/Get-PoshWSUSInstallableItem.ps1

function Get-PoshWSUSInstallableItem {
    <#
    .SYNOPSIS
        Retrieve a collection of installable items related to an update or updates.
         
    .DESCRIPTION
        Retrieve a collection of installable items related to an update or updates.
         
    .PARAMETER InputObject
        Update object/s to get list of installable items
            
    .PARAMETER UpdateName
        Name of update to get list of installable items.
             
    .NOTES
        Name: Get-PoshWSUSInstallableItem
        Author: Boe Prox
        DateCreated: 14NOV2011
                
    .LINK
        https://learn-powershell.net
         
    .EXAMPLE
    Get-PoshWSUSInstallableItem -UpdateName 2617986
    KnowledgeBaseArticles : {2617986}
    Title : Microsoft Silverlight (KB2617986)
    Id : Microsoft.UpdateServices.Administration.UpdateRevisionId
    Languages : {all}
    Files : {silverlighteulapriv-no-717c6af4-d907-42d7-9375-2ca8f225f953.txt, silverlighteulapriv-hr-717c6af4-d907-42d7-9375-2ca8f225f953
                            .txt, silverlighteulapriv-ar-717c6af4-d907-42d7-9375-2ca8f225f953.txt, silverlighteulapriv-he-717c6af4-d907-42d7-9375-2ca8f22
                            5f953.txt...}
 
    KnowledgeBaseArticles : {2617986}
    Title : Microsoft Silverlight (KB2617986)
    Id : Microsoft.UpdateServices.Administration.UpdateRevisionId
    Languages : {all}
    Files : {Silverlight.exe}
 
    KnowledgeBaseArticles : {2617986}
    Title : Security Update for Microsoft Silverlight (KB2617986)
    Id : Microsoft.UpdateServices.Administration.UpdateRevisionId
    Languages : {all}
    Files : {Silverlight.exe}
 
    KnowledgeBaseArticles : {2617986}
    Title : Security Update for Microsoft Silverlight (KB2617986)
    Id : Microsoft.UpdateServices.Administration.UpdateRevisionId
    Languages : {all}
    Files : {Silverlight_Developer.exe}
 
    Description
    -----------
    Lists all of the installable items for KB2617986
     
    .EXAMPLE
    Get-PoshWSUSUpdate -Update 2607712 | Get-PoshWSUSInstallableItem | Format-Table
    KnowledgeBaseArticles Id Languages Files
    --------------------- -- --------- -----
    {2607712} Microsoft.UpdateServices.Administr... {all} {windows6.1-kb2607712-x86.cab}
    {2607712} Microsoft.UpdateServices.Administr... {all} {windows6.1-kb2607712-x64.cab}
    {2607712} Microsoft.UpdateServices.Administr... {pt} {windowsserver2003-kb2607712-x86-...
    {2607712} Microsoft.UpdateServices.Administr... {es} {windowsserver2003-kb2607712-x86-...
    {2607712} Microsoft.UpdateServices.Administr... {it} {windowsserver2003-kb2607712-x86-...
    {2607712} Microsoft.UpdateServices.Administr... {cs} {windowsserver2003-kb2607712-x86-...
    {2607712} Microsoft.UpdateServices.Administr... {pl} {windowsserver2003-kb2607712-x86-...
    {2607712} Microsoft.UpdateServices.Administr... {pt-br} {windowsserver2003-kb2607712-x86-...
    {2607712} Microsoft.UpdateServices.Administr... {hu} {windowsserver2003-kb2607712-x86-...
    {2607712} Microsoft.UpdateServices.Administr... {nl} {windowsserver2003-kb2607712-x86-...
    {2607712} Microsoft.UpdateServices.Administr... {zh-tw} {windowsserver2003-kb2607712-x86-...
    {2607712} Microsoft.UpdateServices.Administr... {fr} {windowsserver2003-kb2607712-x86-...
    {2607712} Microsoft.UpdateServices.Administr... {en} {windowsserver2003-kb2607712-x86-...
    {2607712} Microsoft.UpdateServices.Administr... {de} {windowsserver2003-kb2607712-x86-...
    {2607712} Microsoft.UpdateServices.Administr... {sv} {windowsserver2003-kb2607712-x86-...
    {2607712} Microsoft.UpdateServices.Administr... {tr} {windowsserver2003-kb2607712-x86-...
    {2607712} Microsoft.UpdateServices.Administr... {zh-cn} {windowsserver2003-kb2607712-x86-...
    {2607712} Microsoft.UpdateServices.Administr... {ja} {windowsserver2003-kb2607712-x86-...
    ...
     
    Description
    -----------
    Example showing that Get-PoshWSUSInstallableItem accepts the pipleline result from Get-PoshWSUSUpdate to locate the installable items.
    #>
 
    [cmdletbinding(
        DefaultParameterSetName = 'Name'
    )]
    Param(
        [Parameter(            
            Mandatory = $False,
            Position = 0,
            ParameterSetName = 'object',
            ValueFromPipeline = $True)]
            [system.object]
            [ValidateNotNullOrEmpty()]
            $InputObject,     
        [Parameter(
            Mandatory = $False,
            Position = 0,
            ParameterSetName = 'Name',
            ValueFromPipeline = $True)]
            [string]$UpdateName                                
        )                   
    Process {
        #Perform appropriate action based on Parameter set name
        Switch ($pscmdlet.ParameterSetName) {            
            "object" {
                Write-Verbose "Using 'Collection' set name"
                #Change the variable that will hold the objects
                $patches = $inputobject    
            }                
            "name" {
                Write-Verbose "Using 'String' set name"
                #Search for updates
                Write-Verbose "Searching for update/s"
                $patches = @($wsus.SearchUpdates($UpdateName))
                If ($patches -eq 0) {
                    Write-Error "Update $update could not be found in WSUS!"
                    Break
                }                     
            }
            Default {
                Write-Warning "An error occurred while processing this request!"
            }                
        } 
        ForEach ($patch in $patches) {
            Write-Verbose ("Getting installable items on {0}" -f $patch.Title)
            Try {
                $data = $Patch.GetInstallableItems() | Add-Member -MemberType NoteProperty -Name KnowledgeBaseArticles -value $Patch.KnowledgeBaseArticles -PassThru
                $data | Add-Member -MemberType NoteProperty -Name Title -value $Patch.Title -PassThru
            } Catch {
                Write-Warning ("{0}: {1}" -f $patch.Title,$_.Exception.Message)
            }
        }
    }              
}