Public/Get-WindowsInstallerInstallerProductState.ps1
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.SYNOPSIS This function retrieves the installation state of the given product codes. .DESCRIPTION The Get-WindowsInstallerProductState function uses the Windows Installer COM object to get the installation state of all products associated with the provided product codes. .PARAMETER ProductCode An array of product codes to check the state for. .EXAMPLE Get-WindowsInstallerProductState -ProductCode "GUID1","GUID2","GUID3" #> function Get-WindowsInstallerInstallerProductState { [CmdletBinding()] [OutputType([Int32])] param( [Parameter(Mandatory = $true, ValueFromPipeline = $true)] [ValidatePattern('^(\{[0-9A-Fa-f]{8}-[0-9A-Fa-f]{4}-[0-9A-Fa-f]{4}-[0-9A-Fa-f]{4}-[0-9A-Fa-f]{12}\})$')] [string] $ProductCode, [Parameter(Mandatory = $false, HelpMessage = 'WindowsInstaller.Installer ComObject')] [System.__ComObject] $Installer = (New-Object -ComObject WindowsInstaller.Installer) ) process { $Installer.GetType().InvokeMember('ProductState', [System.Reflection.BindingFlags]::GetProperty, $null, $Installer, $ProductCode) } end { if (-not $PSBoundParameters.ContainsKey('Installer')) { [System.Runtime.Interopservices.Marshal]::ReleaseComObject($Installer) | Out-Null } } } Export-ModuleMember -Function Get-WindowsInstallerInstallerProductState |