.

     public Guid DomainGuid;

.

     public Guid DomainGuid;

.

    [In] GuidClass DomainGuid,

.

DOMAIN_CONTROLLER_INFO, GuidClass

.

    public Guid   DomainGuid;

.

    [In] int DomainGuid,

.

     IntPtr DomainGuid,

.

    [In] IntPtr domainGuid,

.

    /// <summary>The DomainGuid member contains a valid domain GUID.</summary>

.

    /// <summary>Primary domain server GUID is present.</summary>

.

    DomainGuidPresent = 16777216

.

    public Guid DomainGuid;

.

            userNames += child.Name + "{" + child.Guid + "}" + Environment.NewLine;

.

private static extern uint BluetoothEnumerateInstalledServices(IntPtr hRadio, ref Bluetooth_Device_Info pbtdi, ref uint pcServices,  Guid[] pGuidServices);

.

private static extern uint BluetoothSetServiceState(IntPtr hRadio, ref BLUETOOTH_DEVICE_INFO pbtdi, ref   Guid pGuidService, DwServiceFlags dwServiceFlags);

.

AccessibleObjectFromWindow(hWnd, (uint) OBJID.WINDOW, ref guid, ref accessible);

.

         ref Guid iid,

.

    ByRef riid As Guid, _

.

    ByRef riid As Guid, _

.

    Dim IID_IAcce As Guid = New Guid("618736E0-3C3D-11CF-810C-00AA00389B71")

.

    Guid guid = new Guid("{618736E0-3C3D-11CF-810C-00AA00389B71}");

.

    int retVal = AccessibleObjectFromWindow(hwnd, (uint)OBJID.WINDOW, ref guid, ref obj);

.

     [MarshalAs(UnmanagedType.LPStruct)] Guid refiid, IntPtr wParam);

.

Declare Auto Function ObjectFromLresult Lib "oleacc.dll" (ByVal lResult As UIntPtr, <MarshalAs(UnmanagedType.LPStruct)> ByVal refiid As Guid, ByVal wParam As IntPtr) As <MarshalAs(UnmanagedType.Interface)> Object

.

Shared Function ObjectFromLresult(ByVal lResult As UIntPtr, <MarshalAs(UnmanagedType.LPStruct)> ByVal refiid As Guid, ByVal wParam As IntPtr) As <MarshalAs(UnmanagedType.Interface)> Object

.

     typeof(mshtml.IHTMLDocument).GUID, IntPtr.Zero);

.

    Guid clsid;

.

    public static PropertyKey UI_PKEY_Enabled = new PropertyKey(new Guid(Convert.ToString(1, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_BOOL);

.

    public static PropertyKey UI_PKEY_LabelDescription = new PropertyKey(new Guid(Convert.ToString(2, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_LPWSTR);

.

    public static PropertyKey UI_PKEY_Keytip = new PropertyKey(new Guid(Convert.ToString(3, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_LPWSTR);

.

    public static PropertyKey UI_PKEY_Label = new PropertyKey(new Guid(Convert.ToString(4, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_LPWSTR);

.

    public static PropertyKey UI_PKEY_TooltipDescription = new PropertyKey(new Guid(Convert.ToString(5, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_LPWSTR);

.

    public static PropertyKey UI_PKEY_TooltipTitle = new PropertyKey(new Guid(Convert.ToString(6, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_LPWSTR);

.

    public static PropertyKey UI_PKEY_LargeImage = new PropertyKey(new Guid(Convert.ToString(7, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UNKNOWN); // IUIImage

.

    public static PropertyKey UI_PKEY_LargeHighContrastImage = new PropertyKey(new Guid(Convert.ToString(8, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UNKNOWN); // IUIImage

.

    public static PropertyKey UI_PKEY_SmallImage = new PropertyKey(new Guid(Convert.ToString(9, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UNKNOWN); // IUIImage

.

    public static PropertyKey UI_PKEY_SmallHighContrastImage = new PropertyKey(new Guid(Convert.ToString(10, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UNKNOWN); // IUIImage

.

    internal static PropertyKey UI_PKEY_CommandId = new PropertyKey(new Guid(Convert.ToString(100, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UI4);

.

    internal static PropertyKey UI_PKEY_ItemsSource = new PropertyKey(new Guid(Convert.ToString(101, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UNKNOWN); // IEnumUnknown or IUICollection

.

    internal static PropertyKey UI_PKEY_Categories = new PropertyKey(new Guid(Convert.ToString(102, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UNKNOWN); // IEnumUnknown or IUICollection

.

    internal static PropertyKey UI_PKEY_CategoryId = new PropertyKey(new Guid(Convert.ToString(103, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UI4);

.

    internal static PropertyKey UI_PKEY_SelectedItem = new PropertyKey(new Guid(Convert.ToString(104, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UI4);

.

    internal static PropertyKey UI_PKEY_CommandType = new PropertyKey(new Guid(Convert.ToString(105, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UI4);

.

    internal static PropertyKey UI_PKEY_ItemImage = new PropertyKey(new Guid(Convert.ToString(106, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UNKNOWN); // IUIImage

.

    public static PropertyKey UI_PKEY_BooleanValue = new PropertyKey(new Guid(Convert.ToString(200, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_BOOL);

.

    public static PropertyKey UI_PKEY_DecimalValue = new PropertyKey(new Guid(Convert.ToString(201, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_DECIMAL);

.

    public static PropertyKey UI_PKEY_StringValue = new PropertyKey(new Guid(Convert.ToString(202, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_LPWSTR);

.

    public static PropertyKey UI_PKEY_MaxValue = new PropertyKey(new Guid(Convert.ToString(203, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_DECIMAL);

.

    public static PropertyKey UI_PKEY_MinValue = new PropertyKey(new Guid(Convert.ToString(204, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_DECIMAL);

.

    public static PropertyKey UI_PKEY_Increment = new PropertyKey(new Guid(Convert.ToString(205, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_DECIMAL);

.

    public static PropertyKey UI_PKEY_DecimalPlaces = new PropertyKey(new Guid(Convert.ToString(206, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UI4);

.

    public static PropertyKey UI_PKEY_FormatString = new PropertyKey(new Guid(Convert.ToString(207, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_LPWSTR);

.

    public static PropertyKey UI_PKEY_RepresentativeString = new PropertyKey(new Guid(Convert.ToString(208, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_LPWSTR);

.

    public static PropertyKey UI_PKEY_FontProperties = new PropertyKey(new Guid(Convert.ToString(300, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UNKNOWN); // IPropertyStore

.

    public static PropertyKey UI_PKEY_FontProperties_Family = new PropertyKey(new Guid(Convert.ToString(301, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_LPWSTR);

.

    public static PropertyKey UI_PKEY_FontProperties_Size = new PropertyKey(new Guid(Convert.ToString(302, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_DECIMAL);

.

    public static PropertyKey UI_PKEY_FontProperties_Bold = new PropertyKey(new Guid(Convert.ToString(303, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UI4); // UI_FONTPROPERTIES

.

    public static PropertyKey UI_PKEY_FontProperties_Italic = new PropertyKey(new Guid(Convert.ToString(304, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UI4); // UI_FONTPROPERTIES

.

    public static PropertyKey UI_PKEY_FontProperties_Underline = new PropertyKey(new Guid(Convert.ToString(305, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UI4); // UI_FONTPROPERTIES

.

    public static PropertyKey UI_PKEY_FontProperties_Strikethrough = new PropertyKey(new Guid(Convert.ToString(306, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UI4); // UI_FONTPROPERTIES

.

    public static PropertyKey UI_PKEY_FontProperties_VerticalPositioning = new PropertyKey(new Guid(Convert.ToString(307, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UI4); // UI_FONTVERTICALPOSITION

.

    public static PropertyKey UI_PKEY_FontProperties_ForegroundColor = new PropertyKey(new Guid(Convert.ToString(308, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UI4); // COLORREF

.

    public static PropertyKey UI_PKEY_FontProperties_BackgroundColor = new PropertyKey(new Guid(Convert.ToString(309, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UI4); // COLORREF

.

    public static PropertyKey UI_PKEY_FontProperties_ForegroundColorType = new PropertyKey(new Guid(Convert.ToString(310, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UI4); // UI_SWATCHCOLORTYPE

.

    public static PropertyKey UI_PKEY_FontProperties_BackgroundColorType = new PropertyKey(new Guid(Convert.ToString(311, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UI4); // UI_SWATCHCOLORTYPE

.

    public static PropertyKey UI_PKEY_FontProperties_ChangedProperties = new PropertyKey(new Guid(Convert.ToString(312, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UNKNOWN); // IPropertyStore

.

    public static PropertyKey UI_PKEY_FontProperties_DeltaSize = new PropertyKey(new Guid(Convert.ToString(313, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UINT); // UI_FONTDELTASIZE

.

    public static PropertyKey UI_PKEY_RecentItems = new PropertyKey(new Guid(Convert.ToString(350, 16).PadLeft(8, '0') + UI_PropertyKey), (int)(VarEnum.VT_ARRAY | VarEnum.VT_UNKNOWN));

.

    public static PropertyKey UI_PKEY_Pinned = new PropertyKey(new Guid(Convert.ToString(351, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_BOOL);

.

    public static PropertyKey UI_PKEY_Color = new PropertyKey(new Guid(Convert.ToString(400, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UI4); // COLORREF

.

    public static PropertyKey UI_PKEY_ColorType = new PropertyKey(new Guid(Convert.ToString(401, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UI4); // UI_SWATCHCOLORTYPE

.

    public static PropertyKey UI_PKEY_ColorMode = new PropertyKey(new Guid(Convert.ToString(402, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UI4); // UI_SWATCHCOLORMODE

.

    public static PropertyKey UI_PKEY_ThemeColorsCategoryLabel = new PropertyKey(new Guid(Convert.ToString(403, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_LPWSTR);

.

    public static PropertyKey UI_PKEY_StandardColorsCategoryLabel = new PropertyKey(new Guid(Convert.ToString(404, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_LPWSTR);

.

    public static PropertyKey UI_PKEY_RecentColorsCategoryLabel = new PropertyKey(new Guid(Convert.ToString(405, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_LPWSTR);

.

    public static PropertyKey UI_PKEY_AutomaticColorLabel = new PropertyKey(new Guid(Convert.ToString(406, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_LPWSTR);

.

    public static PropertyKey UI_PKEY_NoColorLabel = new PropertyKey(new Guid(Convert.ToString(407, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_LPWSTR);

.

    public static PropertyKey UI_PKEY_MoreColorsLabel = new PropertyKey(new Guid(Convert.ToString(408, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_LPWSTR);

.

    public static PropertyKey UI_PKEY_ThemeColors = new PropertyKey(new Guid(Convert.ToString(409, 16).PadLeft(8, '0') + UI_PropertyKey), (int)(VarEnum.VT_VECTOR | VarEnum.VT_UI4));

.

    public static PropertyKey UI_PKEY_StandardColors = new PropertyKey(new Guid(Convert.ToString(400, 16).PadLeft(8, '0') + UI_PropertyKey), (int)(VarEnum.VT_VECTOR | VarEnum.VT_UI4));

.

    public static PropertyKey UI_PKEY_ThemeColorsTooltips = new PropertyKey(new Guid(Convert.ToString(411, 16).PadLeft(8, '0') + UI_PropertyKey), (int)(VarEnum.VT_VECTOR | VarEnum.VT_LPWSTR));

.

    public static PropertyKey UI_PKEY_StandardColorsTooltips = new PropertyKey(new Guid(Convert.ToString(412, 16).PadLeft(8, '0') + UI_PropertyKey), (int)(VarEnum.VT_VECTOR | VarEnum.VT_LPWSTR));

.

    public static PropertyKey UI_PKEY_Viewable = new PropertyKey(new Guid(Convert.ToString(1000, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_BOOL);

.

    public static PropertyKey UI_PKEY_Minimized = new PropertyKey(new Guid(Convert.ToString(1001, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_BOOL);

.

    public static PropertyKey UI_PKEY_QuickAccessToolbarDock = new PropertyKey(new Guid(Convert.ToString(1002, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UI4);

.

    public static PropertyKey UI_PKEY_ContextAvailable = new PropertyKey(new Guid(Convert.ToString(1100, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UI4);

.

    public static PropertyKey UI_PKEY_GlobalBackgroundColor = new PropertyKey(new Guid(Convert.ToString(2000, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UI4); // UI_HSBCOLOR

.

    public static PropertyKey UI_PKEY_GlobalHighlightColor = new PropertyKey(new Guid(Convert.ToString(2001, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UI4); // UI_HSBCOLOR

.

    public static PropertyKey UI_PKEY_GlobalTextColor = new PropertyKey(new Guid(Convert.ToString(2002, 16).PadLeft(8, '0') + UI_PropertyKey), (int)VarEnum.VT_UI4); // UI_HSBCOLOR

.

  // String-ized GUID as returned by IIDFromString().

.

    ///The Active Directory GUID is unavailable and cannot be added to the Subject Alternate name.

.

    [Description("The Active Directory GUID is unavailable and cannot be added to the Subject Alternate name.")]

.

    public const int CERTSRV_E_SUBJECT_DIRECTORY_GUID_REQUIRED = unchecked((int)0x8009480E);

.

    ///A CLSID with the same GUID as the new application ID is already installed on this machine

.

    [Description("A CLSID with the same GUID as the new application ID is already installed on this machine")]

.

    '''The Active Directory GUID is unavailable and cannot be added to the Subject Alternate name.

.

    <Description("The Active Directory GUID is unavailable and cannot be added to the Subject Alternate name.")> _

.

    Public Const CERTSRV_E_SUBJECT_DIRECTORY_GUID_REQUIRED As Integer = CInt(&H8009480eUI)

.

    '''A CLSID with the same GUID as the new application ID is already installed on this machine

.

    <Description("A CLSID with the same GUID as the new application ID is already installed on this machine")> _

.

    TooManyGuidsRequested = 0xc0000082,

.

    GuidsExhausted = 0xc0000083,

.

    GuidPartitionTable = 1,

.

   /// user policy. See Print Management Step-by-Step Guide.

.

   /// computer policy. See Print Management Step-by-Step Guide.

.

    SE_WMIGUID_OBJECT,

.

    SE_WMIGUID_OBJECT

.

    /// Class (R--tied to ClassGUID)

.

    /// ClassGUID (R/W)

.

    SPDRP_CLASSGUID = 0x00000008,

.

    /// BusTypeGUID (R)

.

    SPDRP_BUSTYPEGUID = 0x00000013,

.

    SPDRP_CLASSGUID = 0x8,

.

    SPDRP_BUSTYPEGUID = 0x13,

.

    SPDRP_CLASSGUID = &H8

.

    SPDRP_BUSTYPEGUID = &H13

.

    [Guid("{000214E5-0000-0000-C000-000000000046}")]

.

[GuidAttribute("c43dc798-95d1-4bea-9030-bb99e2983a1a")]

.

<GuidAttribute("c43dc798-95d1-4bea-9030-bb99e2983a1a")> _

.

    Guid("ea1afb91-9e28-4b86-90e9-9e9f8a5eefaf"),

.

Guid("ea1afb91-9e28-4b86-90e9-9e9f8a5eefaf"),

.

[GuidAttribute("c43dc798-95d1-4bea-9030-bb99e2983a1a")]

.

    [In, MarshalAs(UnmanagedType.LPStruct)] Guid riid,

.

    ByRef riid As Guid, _

.

    <[In](), MarshalAs(UnmanagedType.LPStruct)> ByVal riid As Guid, _

.

            [In] ref Guid riid,

.

            ref Guid_IShellFolder.IID_IShellFolder,

.

    [Guid("000214E6-0000-0000-C000-000000000046")]

.

        [In] ref Guid riid,        

.

        [In] ref Guid riid,        

.

        [In] ref Guid riid,        

.

        [In] ref Guid riid,

.

          [In] ref Guid riid,

.

    public class Guid_IShellFolder

.

    public static Guid IID_IShellFolder =

.

        new Guid("{000214E6-0000-0000-C000-000000000046}");

.

    [In, MarshalAs(UnmanagedType.LPStruct)] Guid riid,

.

        [In][MarshalAs(UnmanagedType.LPStruct)] Guid riid,

.

         <MarshalAs(UnmanagedType.LPStruct)> ByVal riid As Guid, _

.

        SHCreateItemFromParsingName(path, IntPtr.Zero, typeof(IShellItem).GUID, out oItem);

.

    [In, MarshalAs(UnmanagedType.LPStruct)] Guid riid,

.

        public Guid guidItem;

.

        public Guid guidItem;

.

private extern static int SHGetImageList(int iImageList, ref Guid riid, ref IImageList ppv);

.

    [GuidAttribute("46EB5926-582E-4017-9FDF-E8998DAA0950")]

.

        ref Guid riid,

.

        ref Guid riid,

.

        ref Guid riid,

.

     [MarshalAs(UnmanagedType.LPStruct)] Guid rfid,

.

    <MarshalAs(UnmanagedType.LPStruct)> ByVal rfid As Guid,

.

    public static readonly Guid AddNewPrograms = new Guid( "de61d971-5ebc-4f02-a3a9-6c82895e5c04" );

.

    public static readonly Guid AdminTools = new Guid( "724EF170-A42D-4FEF-9F26-B60E846FBA4F" );

.

    public static readonly Guid AppUpdates = new Guid( "a305ce99-f527-492b-8b1a-7e76fa98d6e4" );

.

    public static readonly Guid CDBurning = new Guid( "9E52AB10-F80D-49DF-ACB8-4330F5687855" );

.

    public static readonly Guid ChangeRemovePrograms = new Guid( "df7266ac-9274-4867-8d55-3bd661de872d" );

.

    public static readonly Guid CommonAdminTools = new Guid( "D0384E7D-BAC3-4797-8F14-CBA229B392B5" );

.

    public static readonly Guid CommonOEMLinks = new Guid( "C1BAE2D0-10DF-4334-BEDD-7AA20B227A9D" );

.

    public static readonly Guid CommonPrograms = new Guid( "0139D44E-6AFE-49F2-8690-3DAFCAE6FFB8" );

.

    public static readonly Guid CommonStartMenu = new Guid( "A4115719-D62E-491D-AA7C-E74B8BE3B067" );

.

    public static readonly Guid CommonStartup = new Guid( "82A5EA35-D9CD-47C5-9629-E15D2F714E6E" );

.

    public static readonly Guid CommonTemplates = new Guid( "B94237E7-57AC-4347-9151-B08C6C32D1F7" );

.

    public static readonly Guid ComputerFolder = new Guid( "0AC0837C-BBF8-452A-850D-79D08E667CA7" );

.

    public static readonly Guid ConflictFolder = new Guid( "4bfefb45-347d-4006-a5be-ac0cb0567192" );

.

    public static readonly Guid ConnectionsFolder = new Guid( "6F0CD92B-2E97-45D1-88FF-B0D186B8DEDD" );

.

    public static readonly Guid Contacts = new Guid( "56784854-C6CB-462b-8169-88E350ACB882" );

.

    public static readonly Guid ControlPanelFolder = new Guid( "82A74AEB-AEB4-465C-A014-D097EE346D63" );

.

    public static readonly Guid Cookies = new Guid( "2B0F765D-C0E9-4171-908E-08A611B84FF6" );

.

    public static readonly Guid Desktop = new Guid( "B4BFCC3A-DB2C-424C-B029-7FE99A87C641" );

.

    public static readonly Guid Documents = new Guid( "FDD39AD0-238F-46AF-ADB4-6C85480369C7" );

.

    public static readonly Guid Downloads = new Guid( "374DE290-123F-4565-9164-39C4925E467B" );

.

    public static readonly Guid Favorites = new Guid( "1777F761-68AD-4D8A-87BD-30B759FA33DD" );

.

    public static readonly Guid Fonts = new Guid( "FD228CB7-AE11-4AE3-864C-16F3910AB8FE" );

.

    public static readonly Guid Games = new Guid( "CAC52C1A-B53D-4edc-92D7-6B2E8AC19434" );

.

    public static readonly Guid GameTasks = new Guid( "054FAE61-4DD8-4787-80B6-090220C4B700" );

.

    public static readonly Guid History = new Guid( "D9DC8A3B-B784-432E-A781-5A1130A75963" );

.

    public static readonly Guid InternetCache = new Guid( "352481E8-33BE-4251-BA85-6007CAEDCF9D" );

.

    public static readonly Guid InternetFolder = new Guid( "4D9F7874-4E0C-4904-967B-40B0D20C3E4B" );

.

    public static readonly Guid Links = new Guid( "bfb9d5e0-c6a9-404c-b2b2-ae6db6af4968" );

.

    public static readonly Guid LocalAppData = new Guid( "F1B32785-6FBA-4FCF-9D55-7B8E7F157091" );

.

    public static readonly Guid LocalAppDataLow = new Guid( "A520A1A4-1780-4FF6-BD18-167343C5AF16" );

.

    public static readonly Guid LocalizedResourcesDir = new Guid( "2A00375E-224C-49DE-B8D1-440DF7EF3DDC" );

.

    public static readonly Guid Music = new Guid( "4BD8D571-6D19-48D3-BE97-422220080E43" );

.

    public static readonly Guid NetHood = new Guid( "C5ABBF53-E17F-4121-8900-86626FC2C973" );

.

    public static readonly Guid NetworkFolder = new Guid( "D20BEEC4-5CA8-4905-AE3B-BF251EA09B53" );

.

    public static readonly Guid OriginalImages = new Guid( "2C36C0AA-5812-4b87-BFD0-4CD0DFB19B39" );

.

    public static readonly Guid PhotoAlbums = new Guid( "69D2CF90-FC33-4FB7-9A0C-EBB0F0FCB43C" );

.

    public static readonly Guid Pictures = new Guid( "33E28130-4E1E-4676-835A-98395C3BC3BB" );

.

    public static readonly Guid Playlists = new Guid( "DE92C1C7-837F-4F69-A3BB-86E631204A23" );

.

    public static readonly Guid PrintersFolder = new Guid( "76FC4E2D-D6AD-4519-A663-37BD56068185" );

.

    public static readonly Guid PrintHood = new Guid( "9274BD8D-CFD1-41C3-B35E-B13F55A758F4" );

.

    public static readonly Guid Profile = new Guid( "5E6C858F-0E22-4760-9AFE-EA3317B67173" );

.

    public static readonly Guid ProgramData = new Guid( "62AB5D82-FDC1-4DC3-A9DD-070D1D495D97" );

.

    public static readonly Guid ProgramFiles = new Guid( "905e63b6-c1bf-494e-b29c-65b732d3d21a" );

.

    public static readonly Guid ProgramFilesX64 = new Guid( "6D809377-6AF0-444b-8957-A3773F02200E" );

.

    public static readonly Guid ProgramFilesX86 = new Guid( "7C5A40EF-A0FB-4BFC-874A-C0F2E0B9FA8E" );

.

    public static readonly Guid ProgramFilesCommon = new Guid( "F7F1ED05-9F6D-47A2-AAAE-29D317C6F066" );

.

    public static readonly Guid ProgramFilesCommonX64 = new Guid( "6365D5A7-0F0D-45E5-87F6-0DA56B6A4F7D" );

.

    public static readonly Guid ProgramFilesCommonX86 = new Guid( "DE974D24-D9C6-4D3E-BF91-F4455120B917" );

.

    public static readonly Guid Programs = new Guid( "A77F5D77-2E2B-44C3-A6A2-ABA601054A51" );

.

    public static readonly Guid Public = new Guid( "DFDF76A2-C82A-4D63-906A-5644AC457385" );

.

    public static readonly Guid PublicDesktop = new Guid( "C4AA340D-F20F-4863-AFEF-F87EF2E6BA25" );

.

    public static readonly Guid PublicDocuments = new Guid( "ED4824AF-DCE4-45A8-81E2-FC7965083634" );

.

    public static readonly Guid PublicDownloads = new Guid( "3D644C9B-1FB8-4f30-9B45-F670235F79C0" );

.

    public static readonly Guid PublicGameTasks = new Guid( "DEBF2536-E1A8-4c59-B6A2-414586476AEA" );

.

    public static readonly Guid PublicMusic = new Guid( "3214FAB5-9757-4298-BB61-92A9DEAA44FF" );

.

    public static readonly Guid PublicPictures = new Guid( "B6EBFB86-6907-413C-9AF7-4FC2ABF07CC5" );

.

    public static readonly Guid PublicVideos = new Guid( "2400183A-6185-49FB-A2D8-4A392A602BA3" );

.

    public static readonly Guid QuickLaunch = new Guid( "52a4f021-7b75-48a9-9f6b-4b87a210bc8f" );

.

    public static readonly Guid Recent = new Guid( "AE50C081-EBD2-438A-8655-8A092E34987A" );

.

    public static readonly Guid RecycleBinFolder = new Guid( "B7534046-3ECB-4C18-BE4E-64CD4CB7D6AC" );

.

    public static readonly Guid ResourceDir = new Guid( "8AD10C31-2ADB-4296-A8F7-E4701232C972" );

.

    public static readonly Guid RoamingAppData = new Guid( "3EB685DB-65F9-4CF6-A03A-E3EF65729F3D" );

.

    public static readonly Guid SampleMusic = new Guid( "B250C668-F57D-4EE1-A63C-290EE7D1AA1F" );

.

    public static readonly Guid SamplePictures = new Guid( "C4900540-2379-4C75-844B-64E6FAF8716B" );

.

    public static readonly Guid SamplePlaylists = new Guid( "15CA69B3-30EE-49C1-ACE1-6B5EC372AFB5" );

.

    public static readonly Guid SampleVideos = new Guid( "859EAD94-2E85-48AD-A71A-0969CB56A6CD" );

.

    public static readonly Guid SavedGames = new Guid( "4C5C32FF-BB9D-43b0-B5B4-2D72E54EAAA4" );

.

    public static readonly Guid SavedSearches = new Guid( "7d1d3a04-debb-4115-95cf-2f29da2920da" );

.

    public static readonly Guid SEARCH_CSC = new Guid( "ee32e446-31ca-4aba-814f-a5ebd2fd6d5e" );

.

    public static readonly Guid SEARCH_MAPI = new Guid( "98ec0e18-2098-4d44-8644-66979315a281" );

.

    public static readonly Guid SearchHome = new Guid( "190337d1-b8ca-4121-a639-6d472d16972a" );

.

    public static readonly Guid SendTo = new Guid( "8983036C-27C0-404B-8F08-102D10DCFD74" );

.

    public static readonly Guid SidebarDefaultParts = new Guid( "7B396E54-9EC5-4300-BE0A-2482EBAE1A26" );

.

    public static readonly Guid SidebarParts = new Guid( "A75D362E-50FC-4fb7-AC2C-A8BEAA314493" );

.

    public static readonly Guid StartMenu = new Guid( "625B53C3-AB48-4EC1-BA1F-A1EF4146FC19" );

.

    public static readonly Guid Startup = new Guid( "B97D20BB-F46A-4C97-BA10-5E3608430854" );

.

    public static readonly Guid SyncManagerFolder = new Guid( "43668BF8-C14E-49B2-97C9-747784D784B7" );

.

    public static readonly Guid SyncResultsFolder = new Guid( "289a9a43-be44-4057-a41b-587a76d7e7f9" );

.

    public static readonly Guid SyncSetupFolder = new Guid( "0F214138-B1D3-4a90-BBA9-27CBC0C5389A" );

.

    public static readonly Guid System = new Guid( "1AC14E77-02E7-4E5D-B744-2EB1AE5198B7" );

.

    public static readonly Guid SystemX86 = new Guid( "D65231B0-B2F1-4857-A4CE-A8E7C6EA7D27" );

.

    public static readonly Guid Templates = new Guid( "A63293E8-664E-48DB-A079-DF759E0509F7" );

.

    public static readonly Guid TreeProperties = new Guid( "5b3749ad-b49f-49c1-83eb-15370fbd4882" );

.

    public static readonly Guid UserProfiles = new Guid( "0762D272-C50A-4BB0-A382-697DCD729B80" );

.

    public static readonly Guid UsersFiles = new Guid( "f3ce0f7c-4901-4acc-8648-d5d44b04ef8f" );

.

    public static readonly Guid Videos = new Guid( "18989B1D-99B5-455B-841C-AB7C74E4DDFC" );

.

    public static readonly Guid Windows = new Guid( "F38BF404-1D43-42F2-9305-67DE0B28FC23" );

.

   Public Function GetKnownFolderPath(ByVal folderGuid As Guid) As String

.

    If SHGetKnownFolderPath(folderGuid, 0, Nothing, myPath) <> 0 Then

.

        ref Guid iIdPropStore,

.

static extern void SHLoadInProc([In, MarshalAs(UnmanagedType.LPStruct)] Guid rclsid);

.

    SHOP_VOLUMEGUID = &H4  '// lpObject points to a Volume GUID

.

    SHOP_VOLUMEGUID = &H4  '// lpObject points to a Volume GUID

.

private extern static int SHSetKnownFolderPath(ref Guid folderId, uint flags, IntPtr token, [MarshalAs(UnmanagedType.LPWStr)] string path);

.

    public static Guid AddNewPrograms = new Guid("de61d971-5ebc-4f02-a3a9-6c82895e5c04");

.

    public static Guid AdminTools = new Guid("724EF170-A42D-4FEF-9F26-B60E846FBA4F");

.

    public static Guid AppUpdates = new Guid("a305ce99-f527-492b-8b1a-7e76fa98d6e4");

.

    public static Guid CDBurning = new Guid("9E52AB10-F80D-49DF-ACB8-4330F5687855");

.

    public static Guid ChangeRemovePrograms = new Guid("df7266ac-9274-4867-8d55-3bd661de872d");

.

    public static Guid CommonAdminTools = new Guid("D0384E7D-BAC3-4797-8F14-CBA229B392B5");

.

    public static Guid CommonOEMLinks = new Guid("C1BAE2D0-10DF-4334-BEDD-7AA20B227A9D");

.

    public static Guid CommonPrograms = new Guid("0139D44E-6AFE-49F2-8690-3DAFCAE6FFB8");

.

    public static Guid CommonStartMenu = new Guid("A4115719-D62E-491D-AA7C-E74B8BE3B067");

.

    public static Guid CommonStartup = new Guid("82A5EA35-D9CD-47C5-9629-E15D2F714E6E");

.

    public static Guid CommonTemplates = new Guid("B94237E7-57AC-4347-9151-B08C6C32D1F7");

.

    public static Guid ComputerFolder = new Guid("0AC0837C-BBF8-452A-850D-79D08E667CA7");

.

    public static Guid ConflictFolder = new Guid("4bfefb45-347d-4006-a5be-ac0cb0567192");

.

    public static Guid ConnectionsFolder = new Guid("6F0CD92B-2E97-45D1-88FF-B0D186B8DEDD");

.

    public static Guid Contacts = new Guid("56784854-C6CB-462b-8169-88E350ACB882");

.

    public static Guid ControlPanelFolder = new Guid("82A74AEB-AEB4-465C-A014-D097EE346D63");

.

    public static Guid Cookies = new Guid("2B0F765D-C0E9-4171-908E-08A611B84FF6");

.

    public static Guid Desktop = new Guid("B4BFCC3A-DB2C-424C-B029-7FE99A87C641");

.

    public static Guid Documents = new Guid("FDD39AD0-238F-46AF-ADB4-6C85480369C7");

.

    public static Guid Downloads = new Guid("374DE290-123F-4565-9164-39C4925E467B");

.

    public static Guid Favorites = new Guid("1777F761-68AD-4D8A-87BD-30B759FA33DD");

.

    public static Guid Fonts = new Guid("FD228CB7-AE11-4AE3-864C-16F3910AB8FE");

.

    public static Guid Games = new Guid("CAC52C1A-B53D-4edc-92D7-6B2E8AC19434");

.

    public static Guid GameTasks = new Guid("054FAE61-4DD8-4787-80B6-090220C4B700");

.

    public static Guid History = new Guid("D9DC8A3B-B784-432E-A781-5A1130A75963");

.

    public static Guid InternetCache = new Guid("352481E8-33BE-4251-BA85-6007CAEDCF9D");

.

    public static Guid InternetFolder = new Guid("4D9F7874-4E0C-4904-967B-40B0D20C3E4B");

.

    public static Guid Links = new Guid("bfb9d5e0-c6a9-404c-b2b2-ae6db6af4968");

.

    public static Guid LocalAppData = new Guid("F1B32785-6FBA-4FCF-9D55-7B8E7F157091");

.

    public static Guid LocalAppDataLow = new Guid("A520A1A4-1780-4FF6-BD18-167343C5AF16");

.

    public static Guid LocalizedResourcesDir = new Guid("2A00375E-224C-49DE-B8D1-440DF7EF3DDC");

.

    public static Guid Music = new Guid("4BD8D571-6D19-48D3-BE97-422220080E43");

.

    public static Guid NetHood = new Guid("C5ABBF53-E17F-4121-8900-86626FC2C973");

.

    public static Guid NetworkFolder = new Guid("D20BEEC4-5CA8-4905-AE3B-BF251EA09B53");

.

    public static Guid OriginalImages = new Guid("2C36C0AA-5812-4b87-BFD0-4CD0DFB19B39");

.

    public static Guid PhotoAlbums = new Guid("69D2CF90-FC33-4FB7-9A0C-EBB0F0FCB43C");

.

    public static Guid Pictures = new Guid("33E28130-4E1E-4676-835A-98395C3BC3BB");

.

    public static Guid Playlists = new Guid("DE92C1C7-837F-4F69-A3BB-86E631204A23");

.

    public static Guid PrintersFolder = new Guid("76FC4E2D-D6AD-4519-A663-37BD56068185");

.

    public static Guid PrintHood = new Guid("9274BD8D-CFD1-41C3-B35E-B13F55A758F4");

.

    public static Guid Profile = new Guid("5E6C858F-0E22-4760-9AFE-EA3317B67173");

.

    public static Guid ProgramData = new Guid("62AB5D82-FDC1-4DC3-A9DD-070D1D495D97");

.

    public static Guid ProgramFiles = new Guid("905e63b6-c1bf-494e-b29c-65b732d3d21a");

.

    public static Guid ProgramFilesX64 = new Guid("6D809377-6AF0-444b-8957-A3773F02200E");

.

    public static Guid ProgramFilesX86 = new Guid("7C5A40EF-A0FB-4BFC-874A-C0F2E0B9FA8E");

.

    public static Guid ProgramFilesCommon = new Guid("F7F1ED05-9F6D-47A2-AAAE-29D317C6F066");

.

    public static Guid ProgramFilesCommonX64 = new Guid("6365D5A7-0F0D-45E5-87F6-0DA56B6A4F7D");

.

    public static Guid ProgramFilesCommonX86 = new Guid("DE974D24-D9C6-4D3E-BF91-F4455120B917");

.

    public static Guid Programs = new Guid("A77F5D77-2E2B-44C3-A6A2-ABA601054A51");

.

    public static Guid Public = new Guid("DFDF76A2-C82A-4D63-906A-5644AC457385");

.

    public static Guid PublicDesktop = new Guid("C4AA340D-F20F-4863-AFEF-F87EF2E6BA25");

.

    public static Guid PublicDocuments = new Guid("ED4824AF-DCE4-45A8-81E2-FC7965083634");

.

    public static Guid PublicDownloads = new Guid("3D644C9B-1FB8-4f30-9B45-F670235F79C0");

.

    public static Guid PublicGameTasks = new Guid("DEBF2536-E1A8-4c59-B6A2-414586476AEA");

.

    public static Guid PublicMusic = new Guid("3214FAB5-9757-4298-BB61-92A9DEAA44FF");

.

    public static Guid PublicPictures = new Guid("B6EBFB86-6907-413C-9AF7-4FC2ABF07CC5");

.

    public static Guid PublicVideos = new Guid("2400183A-6185-49FB-A2D8-4A392A602BA3");

.

    public static Guid QuickLaunch = new Guid("52a4f021-7b75-48a9-9f6b-4b87a210bc8f");

.

    public static Guid Recent = new Guid("AE50C081-EBD2-438A-8655-8A092E34987A");

.

    public static Guid RecycleBinFolder = new Guid("B7534046-3ECB-4C18-BE4E-64CD4CB7D6AC");

.

    public static Guid ResourceDir = new Guid("8AD10C31-2ADB-4296-A8F7-E4701232C972");

.

    public static Guid RoamingAppData = new Guid("3EB685DB-65F9-4CF6-A03A-E3EF65729F3D");

.

    public static Guid SampleMusic = new Guid("B250C668-F57D-4EE1-A63C-290EE7D1AA1F");

.

    public static Guid SamplePictures = new Guid("C4900540-2379-4C75-844B-64E6FAF8716B");

.

    public static Guid SamplePlaylists = new Guid("15CA69B3-30EE-49C1-ACE1-6B5EC372AFB5");

.

    public static Guid SampleVideos = new Guid("859EAD94-2E85-48AD-A71A-0969CB56A6CD");

.

    public static Guid SavedGames = new Guid("4C5C32FF-BB9D-43b0-B5B4-2D72E54EAAA4");

.

    public static Guid SavedSearches = new Guid("7d1d3a04-debb-4115-95cf-2f29da2920da");

.

    public static Guid SEARCH_CSC = new Guid("ee32e446-31ca-4aba-814f-a5ebd2fd6d5e");

.

    public static Guid SEARCH_MAPI = new Guid("98ec0e18-2098-4d44-8644-66979315a281");

.

    public static Guid SearchHome = new Guid("190337d1-b8ca-4121-a639-6d472d16972a");

.

    public static Guid SendTo = new Guid("8983036C-27C0-404B-8F08-102D10DCFD74");

.

    public static Guid SidebarDefaultParts = new Guid("7B396E54-9EC5-4300-BE0A-2482EBAE1A26");

.

    public static Guid SidebarParts = new Guid("A75D362E-50FC-4fb7-AC2C-A8BEAA314493");

.

    public static Guid StartMenu = new Guid("625B53C3-AB48-4EC1-BA1F-A1EF4146FC19");

.

    public static Guid Startup = new Guid("B97D20BB-F46A-4C97-BA10-5E3608430854");

.

    public static Guid SyncManagerFolder = new Guid("43668BF8-C14E-49B2-97C9-747784D784B7");

.

    public static Guid SyncResultsFolder = new Guid("289a9a43-be44-4057-a41b-587a76d7e7f9");

.

    public static Guid SyncSetupFolder = new Guid("0F214138-B1D3-4a90-BBA9-27CBC0C5389A");

.

    public static Guid System = new Guid("1AC14E77-02E7-4E5D-B744-2EB1AE5198B7");

.

    public static Guid SystemX86 = new Guid("D65231B0-B2F1-4857-A4CE-A8E7C6EA7D27");

.

    public static Guid Templates = new Guid("A63293E8-664E-48DB-A079-DF759E0509F7");

.

    public static Guid TreeProperties = new Guid("5b3749ad-b49f-49c1-83eb-15370fbd4882");

.

    public static Guid UserProfiles = new Guid("0762D272-C50A-4BB0-A382-697DCD729B80");

.

    public static Guid UsersFiles = new Guid("f3ce0f7c-4901-4acc-8648-d5d44b04ef8f");

.

    public static Guid Videos = new Guid("18989B1D-99B5-455B-841C-AB7C74E4DDFC");

.

    public static Guid Windows = new Guid("F38BF404-1D43-42F2-9305-67DE0B28FC23");

.

    public static bool FindByProductCode(Guid productCode, ref string productName)

.

    public static bool FindByProductCode(Guid productCode, ref string productName)

.

while(0 == MsiEnumRelatedProducts("{FFFFFFFF-FFFF-FFFF-GUID-STRINGFFFFFF}", 0, iIndex++, sbProductCode)) {

.

static extern bool FaxEnableRoutingMethod (IntPtr FaxPortHandle, string RoutingGuid,

.

static extern bool FaxGetRoutingInfo (IntPtr FaxPortHandle, string RoutingGuid,

.

static extern bool FaxSetRoutingInfo (IntPtr FaxPortHandle, string RoutingGuid,

.

        IntPtr pGuidExtension,

.

  __in      GUID* pGuidExtension,

.

        public Guid AppId;

.

        configSslParam.AppId = Guid.NewGuid();

.

    ByRef ClassGuid As GUID, _

.

static extern uint CM_Get_Device_Interface_List_Size(out uint size, ref Guid interfaceClassGuid, string deviceID, uint flags);

.

static extern uint CM_Get_Device_Interface_List_Size(out uint size, ref Guid interfaceClassGuid, string deviceID, uint flags);

.

     public DEVPROPKEY(Guid guid, uint pid) {

.

     _guid = guid;

.

     public Guid _guid;

.

The unmanaged prototype contains a return directive because the CreateSymbolicLink API function returns BOOLEAN, a one-byte data type. The default marshaling for bool is four bytes (to allow seamless integration with BOOL return values). If you were to use the default marshaling for BOOLEAN values, it's likely that you will get erroneous results. The return directive forces PInvoke to marshal just one byte of the return value. Source: http://www.informit.com/guides/content.aspx?g=dotnet&seqNum=762&ns=16196

.

    ' if no Volume GUID passed to sub, use the one corresponding to my USB stick

.

    ' if no Volume GUID passed to sub, use the one corresponding to my USB stick

.

Arguably one of the most frequently used and most important PInvokes used, this is the only way in .NET to get a high performance counter for measurement, unique seeding of Random Variables (although you could perhaps transfer a GUID to a numeric equivalent), and in general what this global consultant would consider a 'must include' in almost any application where Instrumentation is a must.

.

public static extern uint WlanConnect(IntPtr hClientHandle,ref Guid pInterfaceGuid,ref WLAN_CONNECTION_PARAMETERS pConnectionParameters,IntPtr pReserved);

.

                         ByRef pInterfaceGuid As Guid, _

.

WlanConnect(ClientHandle,ref pInterfaceGuid,ref wlanConnectionParameters ,new IntPtr());

.

WlanConnect(ClientHandle, pInterfaceGuid, wlanConnectionParameters, IntPtr.Zero)

.

public static extern uint WlanDeleteProfile(IntPtr hClientHandle,ref Guid pInterfaceGuid,string strProfileName,IntPtr pReserved);

.

public static extern uint  WlanDisconnect(IntPtr hClientHandle,ref Guid pInterfaceGuid,IntPtr pReserved);

.

public static extern uint WlanGetAvailableNetworkList(IntPtr hClientHandle, ref Guid pInterfaceGuid, uint dwFlags, IntPtr pReserved, ref IntPtr ppAvailableNetworkList);

.

     Public Shared Function WlanGetAvailableNetworkList(ByVal hClientHandle As IntPtr, ByRef pInterfaceGuid As Guid, ByVal dwFlags As UInteger, ByVal pReserved As IntPtr, ByRef ppAvailableNetworkList As IntPtr) As UInteger

.

Guid pInterfaceGuid = ((WLAN_INTERFACE_INFO)wlanInterfaceInfoList.InterfaceInfo[0]).InterfaceGuid;

.

WlanGetAvailableNetworkList(ClientHandle, ref pInterfaceGuid, WLAN_AVAILABLE_NETWORK_INCLUDE_ALL_MANUAL_HIDDEN_PROFILES, new  IntPtr(), ref  ppAvailableNetworkList);

.

    [In, MarshalAs(UnmanagedType.LPStruct)] Guid interfaceGuid,

.

WlanGetProfileList(ClientHandle, pInterfaceGuid, IntPtr.Zero, out ppProfileList);

.

public static extern uint WlanGetProfileList(IntPtr hClientHandle,ref Guid pInterfaceGuid,IntPtr pReserved, ref IntPtr ppProfileList);

.

WlanGetProfileList(ClientHandle, ref pInterfaceGuid, new IntPtr(), ref ppProfileList);