Function Get-KnownFolderPath {
    <#
        .SYNOPSIS
            Displays the known folder path of a given name or displays all paths

        .DESCRIPTION
            Displays the known folder path of a given name or displays all paths

        .PARAMETER Name
            Names to display known folder path

        .PARAMETER ListAll
            Shows all known folder paths

        .NOTES
            Name: Get-KnownFolderPath
            Author: Boe Prox
            Version History:
                1.0 // Boe Prox - 28 March 2016
                    - Initial Version

        .OUTPUT
            System.Io.KnownFolder

        .INPUT
            System.String

        .EXAMPLE
            Get-KnownFolderPath

            Description
            -----------
            Displays all known folder paths

        .EXAMPLE
            Get-KnownFolderPath -Name Favorites

            Name                 Path                                                
            ----                 ----                                                
            Favorites            C:\Users\PROXB\Favorites

            Description
            -----------
            Displays all known folder path for Favorites

    #>
    [OutputType('System.Io.KnownFolder')]
    [cmdletbinding(
        DefaultParameterSetName = 'All'
    )]
    Param(
        [parameter(ParameterSetName='Specific')]
        [ValidateSet("SampleVideos", "InternetCache", "AccountPictures", "SavedGames", "ComputerFolder", "ConflictFolder", 
        "SampleMusic", "RecordedTVLibrary", "SearchTemplates", "SavedPicturesLibrary", "PhotoAlbums", "SkyDriveDocuments", 
        "System", "Playlists", "ProgramFiles", "Videos", "ProgramFilesCommon", "Windows", "ResourceDir", "StartMenu", 
        "Cookies", "UserProfiles", "SamplePictures", "ChangeRemovePRograms", "LocalAppDataLow", "Startup", "CommonOEMLinks", 
        "PublicGameTasks", "Recent", "PublicDownloads", "Games", "SEARCH_MAPI", "SavedSearches", "ProgramFilesX86", 
        "RoamingAppData", "Links", "PublicDesktop", "CommonStartMenu", "Templates", "PublicUserTiles", "DeviceMetadataStore", 
        "ProgramData", "Downloads", "UserProgramFiles", "RoamingTiles", "SkyDrivePictures", "SamplePlaylists", 
        "SyncSetupFolder", "ProgramFilesCommonX86", "MusicLibrary", "Programs", "Ringtones", "Music", "UserPinned", "Contacts", 
        "SyncResultsFolder", "AppUpdates", "NetHood", "VideosLibrary", "PublicPictures", "SkyDriveCameraRoll", 
        "GameTasks", "AdminTools", "PublicLibraries", "LocalizedResourceDir", "PublicDocuments", "SearchHome", "LocalAppData", 
        "Screenshots", "CommonPrograms", "PublicVideos", "PublicRingtones", "SyncManagerFolder", "Pictures", "Public", "Desktop", 
        "HomeGroupCurrentUser", "SidebarDefaultParts", "SearchHistory", "SEARCH_CSC", "AppsFolder", "RoamedTileImages", "Favorites", 
        "CommonStartup", "ProgramFilesX64", "SystemX86", "AddNewPrograms", "UsersFiles", "Fonts", "SkyDrive", "SidebarParts", 
        "PrintersFolder", "UsersLibraries", "DocumentsLibrary", "ControlPanelFolder", "History", "NetworkFolder", "Profile", 
        "PicturesLibrary", "CameraRoll", "ApplicationShortcuts", "ProgramFilesCommonX64", "SavedPictures", "InternetFolder", 
        "CommonTemplates", "SendTo", "PrintHood", "RecycleBinFolder", "QuickLaunch", "Libraries", "CDBurning", "ConnectionsFolder", 
        "HomeGroup", "Documents", "PublicMusic", "ImplicitAppShortcuts", "CommonAdminTools", "OriginalImages", "UserProgramFilesCommon")]
        [string[]]$Name,
        [parameter(ParameterSetName='All')]
        [switch]$ListAll
    )
    If ($PSBoundParameters.ContainsKey('Debug')) {
        $DebugPreference = 'Continue'
    }
    #region Reflection
    Try {
        [void][System.KnownFolder]
    } 
    Catch {
        #region Module Builder
        $Domain = [AppDomain]::CurrentDomain
        $DynAssembly = New-Object System.Reflection.AssemblyName('KnownFolder')
        $AssemblyBuilder = $Domain.DefineDynamicAssembly($DynAssembly, [System.Reflection.Emit.AssemblyBuilderAccess]::Run) # Only run in memory
        $ModuleBuilder = $AssemblyBuilder.DefineDynamicModule('KnownFolder', $False)
        #endregion Module Builder

        #region Build Class
        $TypeBuilder = $ModuleBuilder.DefineType('System.KnownFolder', 'Public, Class')
        #endregion Build Class

        #region Methods
        #region SHGetKnownFolderPath Method
        $PInvokeMethod = $TypeBuilder.DefineMethod(
            'SHGetKnownFolderPath', #Method Name
            [Reflection.MethodAttributes] 'PrivateScope, Public, Static, HideBySig, PinvokeImpl', #Method Attributes
            [int], #Method Return Type
            [Type[]] @(
                [guid].MakeByRefType(),
                [uint32],  
                [intptr],
                [intptr].MakeByRefType()
            ) #Method Parameters
        )

        $DllImportConstructor = [Runtime.InteropServices.DllImportAttribute].GetConstructor(@([String]))
        $FieldArray = [Reflection.FieldInfo[]] @(
            [Runtime.InteropServices.DllImportAttribute].GetField('EntryPoint'),
            [Runtime.InteropServices.DllImportAttribute].GetField('SetLastError')
            [Runtime.InteropServices.DllImportAttribute].GetField('ExactSpelling')
            [Runtime.InteropServices.DllImportAttribute].GetField('PreserveSig')
            [Runtime.InteropServices.DllImportAttribute].GetField('CharSet')
        )

        $FieldValueArray = [Object[]] @(
            'SHGetKnownFolderPath', #CASE SENSITIVE!!
            $True,
            $True,
            $True,
            [System.Runtime.InteropServices.CharSet]::Unicode
        )

        $CustomAttribute = New-Object Reflection.Emit.CustomAttributeBuilder(
            $DllImportConstructor,
            @('shell32.dll'),
            $FieldArray,
            $FieldValueArray
        )

        $PInvokeMethod.SetCustomAttribute($CustomAttribute)
        #endregion SHGetKnownFolderPath Method
        #endregion Methods

        #Create the type
        [void]$TypeBuilder.CreateType()
    }

    #region Folder Lookups
    $Folders = @{
        AccountPictures = '008ca0b1-55b4-4c56-b8a8-4de4b299d3be'
        AddNewPrograms = 'de61d971-5ebc-4f02-a3a9-6c82895e5c04'
        AdminTools = '724EF170-A42D-4FEF-9F26-B60E846FBA4F'
        ApplicationShortcuts = 'A3918781-E5F2-4890-B3D9-A7E54332328C'
        AppsFolder = '1e87508d-89c2-42f0-8a7e-645a0f50ca58'
        AppUpdates = 'a305ce99-f527-492b-8b1a-7e76fa98d6e4'
        CameraRoll = 'AB5FB87B-7CE2-4F83-915D-550846C9537B'
        CDBurning = '9E52AB10-F80D-49DF-ACB8-4330F5687855'
        ChangeRemovePRograms = 'df7266ac-9274-4867-8d55-3bd661de872d'
        CommonAdminTools = 'D0384E7D-BAC3-4797-8F14-CBA229B392B5'
        CommonOEMLinks = 'C1BAE2D0-10DF-4334-BEDD-7AA20B227A9D'
        CommonPrograms = '0139D44E-6AFE-49F2-8690-3DAFCAE6FFB8'
        CommonStartMenu = 'A4115719-D62E-491D-AA7C-E74B8BE3B067'
        CommonStartup = '82A5EA35-D9CD-47C5-9629-E15D2F714E6E'
        CommonTemplates = 'B94237E7-57AC-4347-9151-B08C6C32D1F7'
        ComputerFolder = '0AC0837C-BBF8-452A-850D-79D08E667CA7'
        ConflictFolder = '4bfefb45-347d-4006-a5be-ac0cb0567192'
        ConnectionsFolder = '6F0CD92B-2E97-45D1-88FF-B0D186B8DEDD'
        Contacts = '56784854-C6CB-462b-8169-88E350ACB882'
        ControlPanelFolder = '82A74AEB-AEB4-465C-A014-D097EE346D63'
        Cookies = '2B0F765D-C0E9-4171-908E-08A611B84FF6'
        Desktop = 'B4BFCC3A-DB2C-424C-B029-7FE99A87C641'
        DeviceMetadataStore = '5CE4A5E9-E4EB-479D-B89F-130C02886155'
        Documents = 'FDD39AD0-238F-46AF-ADB4-6C85480369C7'
        DocumentsLibrary = '7B0DB17D-9CD2-4A93-9733-46CC89022E7C'
        Downloads = '374DE290-123F-4565-9164-39C4925E467B'
        Favorites = '1777F761-68AD-4D8A-87BD-30B759FA33DD'
        Fonts = 'FD228CB7-AE11-4AE3-864C-16F3910AB8FE'
        Games = 'CAC52C1A-B53D-4edc-92D7-6B2E8AC19434'
        GameTasks = '054FAE61-4DD8-4787-80B6-090220C4B700'
        History = 'D9DC8A3B-B784-432E-A781-5A1130A75963'
        HomeGroup = '52528A6B-B9E3-4ADD-B60D-588C2DBA842D'
        HomeGroupCurrentUser = '9B74B6A3-0DFD-4f11-9E78-5F7800F2E772'
        ImplicitAppShortcuts = 'BCB5256F-79F6-4CEE-B725-DC34E402FD46'
        InternetCache = '352481E8-33BE-4251-BA85-6007CAEDCF9D'
        InternetFolder = '4D9F7874-4E0C-4904-967B-40B0D20C3E4B'
        Libraries = '1B3EA5DC-B587-4786-B4EF-BD1DC332AEAE'
        Links = 'bfb9d5e0-c6a9-404c-b2b2-ae6db6af4968'
        LocalAppData = 'F1B32785-6FBA-4FCF-9D55-7B8E7F157091'
        LocalAppDataLow = 'A520A1A4-1780-4FF6-BD18-167343C5AF16'
        LocalizedResourceDir = '2A00375E-224C-49DE-B8D1-440DF7EF3DDC'
        Music = '4BD8D571-6D19-48D3-BE97-422220080E43'
        MusicLibrary = '2112AB0A-C86A-4FFE-A368-0DE96E47012E'
        NetHood = 'C5ABBF53-E17F-4121-8900-86626FC2C973'
        NetworkFolder = 'D20BEEC4-5CA8-4905-AE3B-BF251EA09B53'
        OriginalImages = '2C36C0AA-5812-4b87-BFD0-4CD0DFB19B39'
        PhotoAlbums = '69D2CF90-FC33-4FB7-9A0C-EBB0F0FCB43C'
        PicturesLibrary = 'A990AE9F-A03B-4E80-94BC-9912D7504104'
        Pictures = '33E28130-4E1E-4676-835A-98395C3BC3BB'
        Playlists = 'DE92C1C7-837F-4F69-A3BB-86E631204A23'
        PrintersFolder = '76FC4E2D-D6AD-4519-A663-37BD56068185'
        PrintHood = '9274BD8D-CFD1-41C3-B35E-B13F55A758F4'
        Profile = '5E6C858F-0E22-4760-9AFE-EA3317B67173'
        ProgramData = '62AB5D82-FDC1-4DC3-A9DD-070D1D495D97'
        ProgramFiles = '905e63b6-c1bf-494e-b29c-65b732d3d21a'
        ProgramFilesX64 = '6D809377-6AF0-444b-8957-A3773F02200E'
        ProgramFilesX86 = '7C5A40EF-A0FB-4BFC-874A-C0F2E0B9FA8E'
        ProgramFilesCommon = 'F7F1ED05-9F6D-47A2-AAAE-29D317C6F066'
        ProgramFilesCommonX64 = '6365D5A7-0F0D-45E5-87F6-0DA56B6A4F7D'
        ProgramFilesCommonX86 = 'DE974D24-D9C6-4D3E-BF91-F4455120B917'
        Programs = 'A77F5D77-2E2B-44C3-A6A2-ABA601054A51'
        Public = 'DFDF76A2-C82A-4D63-906A-5644AC457385'
        PublicDesktop = 'C4AA340D-F20F-4863-AFEF-F87EF2E6BA25'
        PublicDocuments = 'ED4824AF-DCE4-45A8-81E2-FC7965083634'
        PublicDownloads = '3D644C9B-1FB8-4f30-9B45-F670235F79C0'
        PublicGameTasks = 'DEBF2536-E1A8-4c59-B6A2-414586476AEA'
        PublicLibraries = '48DAF80B-E6CF-4F4E-B800-0E69D84EE384'
        PublicMusic = '3214FAB5-9757-4298-BB61-92A9DEAA44FF'
        PublicPictures = 'B6EBFB86-6907-413C-9AF7-4FC2ABF07CC5'
        PublicRingtones = 'E555AB60-153B-4D17-9F04-A5FE99FC15EC'
        PublicUserTiles = '0482af6c-08f1-4c34-8c90-e17ec98b1e17'
        PublicVideos = '2400183A-6185-49FB-A2D8-4A392A602BA3'
        QuickLaunch = '52a4f021-7b75-48a9-9f6b-4b87a210bc8f'
        Recent = 'AE50C081-EBD2-438A-8655-8A092E34987A'
        RecordedTVLibrary = '1A6FDBA2-F42D-4358-A798-B74D745926C5'
        RecycleBinFolder = 'B7534046-3ECB-4C18-BE4E-64CD4CB7D6AC'
        ResourceDir = '8AD10C31-2ADB-4296-A8F7-E4701232C972'
        Ringtones = 'C870044B-F49E-4126-A9C3-B52A1FF411E8'
        RoamingAppData = '3EB685DB-65F9-4CF6-A03A-E3EF65729F3D'
        RoamedTileImages = 'AAA8D5A5-F1D6-4259-BAA8-78E7EF60835E'
        RoamingTiles = '00BCFC5A-ED94-4e48-96A1-3F6217F21990'
        SampleMusic = 'B250C668-F57D-4EE1-A63C-290EE7D1AA1F'
        SamplePictures = 'C4900540-2379-4C75-844B-64E6FAF8716B'
        SamplePlaylists = '15CA69B3-30EE-49C1-ACE1-6B5EC372AFB5'
        SampleVideos = '859EAD94-2E85-48AD-A71A-0969CB56A6CD'
        SavedGames = '4C5C32FF-BB9D-43b0-B5B4-2D72E54EAAA4'
        SavedPictures = '3B193882-D3AD-4eab-965A-69829D1FB59F'
        SavedPicturesLibrary = 'E25B5812-BE88-4bd9-94B0-29233477B6C3'
        SavedSearches = '7d1d3a04-debb-4115-95cf-2f29da2920da'
        Screenshots = 'b7bede81-df94-4682-a7d8-57a52620b86f'
        SEARCH_CSC = 'ee32e446-31ca-4aba-814f-a5ebd2fd6d5e'
        SearchHistory = '0D4C3DB6-03A3-462F-A0E6-08924C41B5D4'
        SearchHome = '190337d1-b8ca-4121-a639-6d472d16972a'
        SEARCH_MAPI = '98ec0e18-2098-4d44-8644-66979315a281'
        SearchTemplates = '7E636BFE-DFA9-4D5E-B456-D7B39851D8A9'
        SendTo = '8983036C-27C0-404B-8F08-102D10DCFD74'
        SidebarDefaultParts = '7B396E54-9EC5-4300-BE0A-2482EBAE1A26'
        SidebarParts = 'A75D362E-50FC-4fb7-AC2C-A8BEAA314493'
        SkyDrive = 'A52BBA46-E9E1-435f-B3D9-28DAA648C0F6'
        SkyDriveCameraRoll = '767E6811-49CB-4273-87C2-20F355E1085B'
        SkyDriveDocuments = '24D89E24-2F19-4534-9DDE-6A6671FBB8FE'
        SkyDrivePictures = '339719B5-8C47-4894-94C2-D8F77ADD44A6'
        StartMenu = '625B53C3-AB48-4EC1-BA1F-A1EF4146FC19'
        Startup = 'B97D20BB-F46A-4C97-BA10-5E3608430854'
        SyncManagerFolder = '43668BF8-C14E-49B2-97C9-747784D784B7'
        SyncResultsFolder = '289a9a43-be44-4057-a41b-587a76d7e7f9'
        SyncSetupFolder = '0F214138-B1D3-4a90-BBA9-27CBC0C5389A'
        System = '1AC14E77-02E7-4E5D-B744-2EB1AE5198B7'
        SystemX86 = 'D65231B0-B2F1-4857-A4CE-A8E7C6EA7D27'
        Templates = 'A63293E8-664E-48DB-A079-DF759E0509F7'
        UserPinned = '9E3995AB-1F9C-4F13-B827-48B24B6C7174'
        UserProfiles = '0762D272-C50A-4BB0-A382-697DCD729B80'
        UserProgramFiles = '5CD7AEE2-2219-4A67-B85D-6C9CE15660CB'
        UserProgramFilesCommon = 'BCBD3057-CA5C-4622-B42D-BC56DB0AE516'
        UsersFiles = 'f3ce0f7c-4901-4acc-8648-d5d44b04ef8f'
        UsersLibraries = 'A302545D-DEFF-464b-ABE8-61C8648D939B'
        Videos = '18989B1D-99B5-455B-841C-AB7C74E4DDFC'
        VideosLibrary = '491E922F-5643-4AF4-A7EB-4E7A138D8174'
        Windows = 'F38BF404-1D43-42F2-9305-67DE0B28FC23'
    }
    #endregion Folder Lookups
    Write-Debug "ParameterSetName: $($PSCmdlet.ParameterSetName)"
    If ($PSCmdlet.ParameterSetName -eq 'Specific') {
        ForEach ($Item in $Name) {
            $Pointer = [intptr]::Zero
            $Return = [System.KnownFolder]::SHGetKnownFolderPath(
                [ref]($Folders[$Item]),
                0,
                [intptr]::Zero,
                [ref]$Pointer
            )
            Write-Debug "Return Value: $Return"
            Write-Debug "Pointer: $Pointer"
            If ($Return -eq 0) {
                $Path = [System.Runtime.InteropServices.Marshal]::PtrToStringUni($Pointer)
                [System.Runtime.InteropServices.Marshal]::FreeCoTaskMem($Pointer) 
                $Object = [pscustomobject]@{
                    Name = $Item
                    Path = $Path
                }               
            }  
            Else {
                $Object = [pscustomobject]@{
                    Name = $Item
                    Path = $Path
                }            
            }
            $Object.pstypenames.insert(0,'System.Io.KnownFolder')
            $Object
            $Path = $Null                      
        }
    } ElseIf ($PSCmdlet.ParameterSetName -eq 'All') {
        ForEach ($Item in ($Folders.GetEnumerator())) {
            $Pointer = [intptr]::Zero
                Write-Verbose "Getting known path for $($Item.Name)"
            $Return = [System.KnownFolder]::SHGetKnownFolderPath(
                [ref]($Item.Value),
                0,
                [intptr]::Zero,
                [ref]$Pointer
            )            
            Write-Debug "Return Value: $Return"
            Write-Debug "Pointer: $Pointer"
            If ($Return -eq 0) {
                $Path = [System.Runtime.InteropServices.Marshal]::PtrToStringUni($Pointer)
                [System.Runtime.InteropServices.Marshal]::FreeCoTaskMem($Pointer) 
                $Object = [pscustomobject]@{
                    Name = $Item.Name
                    Path = $Path
                }               
            } 
            Else {
                $Object = [pscustomobject]@{
                    Name = $Item.Name
                    Path = $Path
                }            
            }
            $Object.pstypenames.insert(0,'System.Io.KnownFolder')
            $Object
            $Path = $Null
        }
    }
}