SO_BSP_STATE        =   0x1009,

    Public T_STATE As ABState

    ABN_STATECHANGE = 0

            retState.T_STATE = ABState.ABS_MANUAL

            retState.T_STATE = ABState.ABS_ALWAYSONTOP

            retState.T_STATE = ABState.ABS_AUTOHIDE

            retState.T_STATE = ABState.ABS_AUTOHIDEANDONTOP

        private uint BIF_STATUSTEXT     = 0x0004;  // Top of the dialog has 2 lines of text for BROWSEINFO.lpszTitle and one line if

     out QUERY_USER_NOTIFICATION_STATE pquns);

enum QUERY_USER_NOTIFICATION_STATE

    ERROR_INVALID_HANDLE_STATE = 1609,

    ERROR_INVALID_HANDLE_STATE = 1609

static extern uint RasGetConnectionStatistics(IntPtr hRasConn, ref RAS_STATS lpStatistics);

     ByRef lpStatistics As RAS_STATS) As UInt32

RAS_STATS.

RAS_STATS statistics = new RAS_STATS();

    BIF_STATUSTEXT = 0x00000004,

    BIF_STATUSTEXT = &H00000004

    BIF_STATUSTEXT As Long = &H00000004

enum DFS_STORAGE_STATES {

    DFS_STORAGE_STATE_OFFLINE=0x1,

    DFS_STORAGE_STATE_ONLINE=0x2,

    DFS_STORAGE_STATE_ACTIVE=0x4

Enum DFS_STORAGE_STATES

enum DFS_VOLUME_STATE {

    DFS_VOLUME_STATE_OK =0x1,

    DFS_VOLUME_STATE_INCONSISTENT=2,

    DFS_VOLUME_STATE_OFFLINE=3,

    DFS_VOLUME_STATE_ONLINE=4

Enum DFS_VOLUME_STATE

    DLGC_STATIC = 0x0100,

    public const int STG_E_STATUS_COPY_PROTECTION_FAILURE = unchecked((int)0x80030305);

    public const int OLE_E_STATIC = unchecked((int)0x8004000B);

    public const int DV_E_STATDATA = unchecked((int)0x80040067);

    public const int OLE_S_STATIC = unchecked((int)0x00040001);

    public const int NTE_BAD_KEY_STATE = unchecked((int)0x8009000B);

    public const int NTE_BAD_HASH_STATE = unchecked((int)0x8009000C);

    //  FACILITY_STATE_MANAGEMENT

    #region (0x220000 - 0x22FFFF) FACILITY_STATE_MANAGEMENT=34 errors

    Public Const STG_E_STATUS_COPY_PROTECTION_FAILURE As Integer = CInt(&H80030305UI)

    Public Const OLE_E_STATIC As Integer = CInt(&H8004000bUI)

    Public Const DV_E_STATDATA As Integer = CInt(&H80040067UI)

    Public Const OLE_S_STATIC As Integer = CInt(&H40001)

    Public Const NTE_BAD_KEY_STATE As Integer = CInt(&H8009000bUI)

    Public Const NTE_BAD_HASH_STATE As Integer = CInt(&H8009000cUI)

    '  FACILITY_STATE_MANAGEMENT

    #Region "(0x220000 - 0x22FFFF) FACILITY_STATE_MANAGEMENT=34 errors"

        FEATURE_FORCE_ADDR_AND_STATUS = 23,

public enum MIB_TCP_STATE

    MIB_TCP_STATE_CLOSED = 1,

    MIB_TCP_STATE_LISTEN = 2,

    MIB_TCP_STATE_SYN_SENT = 3,

    MIB_TCP_STATE_SYN_RCVD = 4,

    MIB_TCP_STATE_ESTAB = 5,

    MIB_TCP_STATE_FIN_WAIT1 = 6,

    MIB_TCP_STATE_FIN_WAIT2 = 7,

    MIB_TCP_STATE_CLOSE_WAIT = 8,

    MIB_TCP_STATE_CLOSING = 9,

    MIB_TCP_STATE_LAST_ACK = 10,

    MIB_TCP_STATE_TIME_WAIT = 11,

    MIB_TCP_STATE_DELETE_TCB = 12

Public Enum MIB_TCP_STATE

    MIB_TCP_STATE_CLOSED = 1

    MIB_TCP_STATE_LISTEN = 2

    MIB_TCP_STATE_SYN_SENT = 3

    MIB_TCP_STATE_SYN_RCVD = 4

    MIB_TCP_STATE_ESTAB = 5

    MIB_TCP_STATE_FIN_WAIT1 = 6

    MIB_TCP_STATE_FIN_WAIT2 = 7

    MIB_TCP_STATE_CLOSE_WAIT = 8

    MIB_TCP_STATE_CLOSING = 9

    MIB_TCP_STATE_LAST_ACK = 10

    MIB_TCP_STATE_TIME_WAIT = 11

    MIB_TCP_STATE_DELETE_TCB = 12

    /// #define NET_API_STATUS DWORD

    public enum NET_API_STATUS : uint

Public Enum NET_API_STATUS as UInteger

Many kernel-mode standard driver routines and driver support routines use the NTSTATUS type for return values. Additionally, drivers provide an NTSTATUS-typed value in an IRP's IO_STATUS_BLOCK structure when completing IRPS.

    OLECMDTEXTF_STATUS = 2

    OLECMDTEXTF_STATUS = 2

        ERROR_STATE_MACHINES_NOT_STARTED,

        ERROR_STATE_MACHINES_ALREADY_STARTED,

        ERROR_INVALID_AUTH_STATE,

  public enum RM_APP_STATUS : uint

     SC_MANAGER_QUERY_LOCK_STATUS   = 0x00010,

                      SC_MANAGER_QUERY_LOCK_STATUS |

    SC_MANAGER_QUERY_LOCK_STATUS = &H10

    SC_MANAGER_ALL_ACCESS = STANDARD_RIGHTS_REQUIRED And SC_MANAGER_CONNECT And SC_MANAGER_CREATE_SERVICE And SC_MANAGER_ENUMERATE_SERVICE And SC_MANAGER_LOCK And SC_MANAGER_QUERY_LOCK_STATUS And SC_MANAGER_MODIFY_BOOT_CONFIG

     SERVICE_QUERY_STATUS       = 0x00004,

                       SERVICE_QUERY_STATUS     |

    SERVICE_QUERY_STATUS = &H4

            SERVICE_QUERY_STATUS Or _

public enum SERVICE_STATES : int

     SERVICE_STATE_ALL   = SERVICE_ACTIVE | SERVICE_INACTIVE

Public Enum SERVICE_STATES : int32

    SERVICE_STATE_ALL = SERVICE_ACTIVE Or SERVICE_INACTIVE

public enum SERVICE_STATES : int

     SERVICE_STATE_ALL   = SERVICE_ACTIVE | SERVICE_INACTIVE

<Flags()> Public Enum SERVICE_STATES : int32

    SERVICE_STATE_ALL = SERVICE_ACTIVE Or SERVICE_INACTIVE

    SPDRP_INSTALL_STATE = 0x00000022,

    /// The buffer receives a TOKEN_STATISTICS structure that contains various token statistics.

enum USB_CONNECTION_STATUS

Enum USB_CONNECTION_STATUS

typedef enum _USB_CONNECTION_STATUS {

} USB_CONNECTION_STATUS, *PUSB_CONNECTION_STATUS;

    WS_EX_STATICEDGE = 0x00020000,

    WS_EX_STATICEDGE = 0x00020000,

    WS_EX_STATICEDGE = &H20000

    WS_EX_STATICEDGE As Long = &H20000

    WS_EX_STATICEDGE = 0x00020000,

    WS_EX_STATICEDGE = &H20000

    WS_EX_STATICEDGE As Long = &H20000

public enum WLAN_HOSTED_NETWORK_PEER_AUTH_STATE

     wlan_hosted_network_peer_state_invalid,

     wlan_hosted_network_peer_state_authenticated

Enum WLAN_HOSTED_NETWORK_PEER_AUTH_STATE

    wlan_hosted_network_reason_virtual_station_blocking_use,

    wlan_hosted_network_reason_service_available_on_virtual_station

        public enum WLAN_INTERFACE_STATE

        /// wlan_interface_state_not_ready -> 0

        wlan_interface_state_not_ready = 0,

        /// wlan_interface_state_connected -> 1

        wlan_interface_state_connected = 1,

        /// wlan_interface_state_ad_hoc_network_formed -> 2

        wlan_interface_state_ad_hoc_network_formed = 2,

        /// wlan_interface_state_disconnecting -> 3

        wlan_interface_state_disconnecting = 3,

        /// wlan_interface_state_disconnected -> 4

        wlan_interface_state_disconnected = 4,

        /// wlan_interface_state_associating -> 5

        wlan_interface_state_associating = 5,

        /// wlan_interface_state_discovering -> 6

        wlan_interface_state_discovering = 6,

        /// wlan_interface_state_authenticating -> 7

        wlan_interface_state_authenticating = 7,

     Public Enum WLAN_INTERFACE_STATE

     ''' wlan_interface_state_not_ready -> 0

     wlan_interface_state_not_ready = 0

     ''' wlan_interface_state_connected -> 1

     wlan_interface_state_connected = 1

     ''' wlan_interface_state_ad_hoc_network_formed -> 2

     wlan_interface_state_ad_hoc_network_formed = 2

     ''' wlan_interface_state_disconnecting -> 3

     wlan_interface_state_disconnecting = 3

     ''' wlan_interface_state_disconnected -> 4

     wlan_interface_state_disconnected = 4

     ''' wlan_interface_state_associating -> 5

     wlan_interface_state_associating = 5

     ''' wlan_interface_state_discovering -> 6

     wlan_interface_state_discovering = 6

     ''' wlan_interface_state_authenticating -> 7

     wlan_interface_state_authenticating = 7

        wlan_intf_opcode_radio_state,

        wlan_intf_opcode_interface_state,

        wlan_intf_opcode_statistics,

     wlan_intf_opcode_radio_state

     wlan_intf_opcode_interface_state

     wlan_intf_opcode_statistics

public static extern bool    ControlService(IntPtr hService, SERVICE_CONTROL dwControl, ref SERVICE_STATUS lpServiceStatus);

Public Function ControlService(ByVal hService As IntPtr, ByVal dwControl As SERVICE_CONTROL, ByRef lpServiceStatus As SERVICE_STATUS) As Boolean

Declare Function ControlService Lib "advapi32.dll" (ByVal hService As Long, ByVal lControlCode As Long, ByVal lpServiceStatus As SERVICE_STATUS) As Boolean

See SERVICE_STATUS definition

public enum SERVICE_STATE : uint

See SERVICE_STATUS definition

Public Enum SERVICE_STATE As Integer

SERVICE_STATUS stat = new SERVICE_STATUS();

         SERVICE_STATUS serviceStatus;

         serviceStatus = new SERVICE_STATUS ();

     private SERVICE_STATUS DoQueryServiceStatus ()

         SERVICE_STATUS serviceStatus = new SERVICE_STATUS();

                 SERVICE_STATUS serviceStatus = new SERVICE_STATUS ();

         SERVICE_STATUS serviceStatus = new SERVICE_STATUS();

         ref SERVICE_STATUS lpServiceStatus);

     internal static extern bool QueryServiceStatus (IntPtr hService, ref SERVICE_STATUS dwServiceStatus);

     internal static extern bool SetServiceStatus (IntPtr hServiceStatus, ref SERVICE_STATUS lpServiceStatus);

    SERVICE_QUERY_STATUS = 0x00004,

        SERVICE_QUERY_STATUS |

        SERVICE_QUERY_STATUS |

    SERVICE_QUERY_STATUS = &H4

        SERVICE_QUERY_STATUS Or _

        SERVICE_QUERY_STATUS Or _

        SERVICE_QUERY_STATUS       = 0x00004,

            SERVICE_QUERY_STATUS     |

        SC_MANAGER_QUERY_LOCK_STATUS   = 0x00010,

            SC_MANAGER_QUERY_LOCK_STATUS |

                       SERVICE_STATES dwServiceState,

                       ref ENUM_SERVICE_STATUS lpServices,

SERVICE_STATES, SERVICE_TYPES, ENUM_SERVICE_STATUS, OpenSCManager, EnumServicesStatus, and OpenService

                 SERVICE_STATES.SERVICE_STATE_ALL,

                     SERVICE_STATES.SERVICE_STATE_ALL,

         ENUM_SERVICE_STATUS serviceStatus;

         serviceStatus = (ENUM_SERVICE_STATUS) Marshal.PtrToStructure( new IntPtr(iPtr), typeof(ENUM_SERVICE_STATUS) );

                             SERVICE_STATES.SERVICE_STATE_ALL,

                             SERVICE_STATES.SERVICE_STATE_ALL,

                 ENUM_SERVICE_STATUS depService;

                 depService = (ENUM_SERVICE_STATUS) Marshal.PtrToStructure( new IntPtr(iDepPtr), typeof(ENUM_SERVICE_STATUS) );

                 iDepPtr += ENUM_SERVICE_STATUS.SizeOf;

         iPtr += ENUM_SERVICE_STATUS.SizeOf;

      internal static ENUM_SERVICE_STATUS_PROCESS[] GetServices()

     List<ENUM_SERVICE_STATUS_PROCESS> result = new List<ENUM_SERVICE_STATUS_PROCESS>();

           ENUM_SERVICE_STATUS_PROCESS infoLevel = new ENUM_SERVICE_STATUS_PROCESS();

           if (!EnumServicesStatusEx(handle, SC_ENUM_PROCESS_INFO, (int)ServiceType.SERVICE_WIN32, (int)ServiceStateRequest.SERVICE_STATE_ALL, IntPtr.Zero, 0, out iBytesNeeded, out iServicesReturned, ref iResumeHandle, null))

          if (!EnumServicesStatusEx(handle, SC_ENUM_PROCESS_INFO, (int)ServiceType.SERVICE_WIN32, (int)ServiceStateRequest.SERVICE_STATE_ALL, buf, iBytesNeeded, out iBytesNeeded, out iServicesReturned, ref iResumeHandle, null))

          ENUM_SERVICE_STATUS_PROCESS serviceStatus;

            serviceStatus = (ENUM_SERVICE_STATUS_PROCESS)Marshal.PtrToStructure(new IntPtr(pointer),

               typeof(ENUM_SERVICE_STATUS_PROCESS));

            // incremement by sizeof(ENUM_SERVICE_STATUS_PROCESS) allow Packing of 8

            pointer += ENUM_SERVICE_STATUS_PROCESS.SizePack8;

            serviceStatus = (ENUM_SERVICE_STATUS_PROCESS)Marshal.PtrToStructure(new IntPtr(pointer),

               typeof(ENUM_SERVICE_STATUS_PROCESS));

            // incremement by sizeof(ENUM_SERVICE_STATUS_PROCESS) allow Packing of 4

            pointer += ENUM_SERVICE_STATUS_PROCESS.SizePack4;

      internal struct ENUM_SERVICE_STATUS_PROCESS

     internal static readonly int SizePack4 = Marshal.SizeOf(typeof(ENUM_SERVICE_STATUS_PROCESS));

     /// sizeof(ENUM_SERVICE_STATUS_PROCESS) allow Packing of 8 on 64 bit machines

     internal static readonly int SizePack8 = Marshal.SizeOf(typeof(ENUM_SERVICE_STATUS_PROCESS)) + 4;

     internal SERVICE_STATUS_PROCESS ServiceStatus;

      internal struct SERVICE_STATUS_PROCESS

      private enum ServiceStateRequest { SERVICE_ACTIVE = 0x1, SERVICE_INACTIVE = 0x2, SERVICE_STATE_ALL = (SERVICE_ACTIVE | SERVICE_INACTIVE) }

      private enum ServiceControlManagerType { SC_MANAGER_CONNECT = 0x1, SC_MANAGER_CREATE_SERVICE = 0x2, SC_MANAGER_ENUMERATE_SERVICE = 0x4, SC_MANAGER_LOCK = 0x8, SC_MANAGER_QUERY_LOCK_STATUS = 0x10, SC_MANAGER_MODIFY_BOOT_CONFIG = 0x20, SC_MANAGER_ALL_ACCESS = STANDARD_RIGHTS_REQUIRED | SC_MANAGER_CONNECT | SC_MANAGER_CREATE_SERVICE | SC_MANAGER_ENUMERATE_SERVICE | SC_MANAGER_LOCK | SC_MANAGER_QUERY_LOCK_STATUS | SC_MANAGER_MODIFY_BOOT_CONFIG }

        IS_TEXT_UNICODE_STATISTICS       = 0x0002,

        IS_TEXT_UNICODE_REVERSE_STATISTICS   = 0x0020,

    Private NT_STATUS_OBJECT_NAME_NOT_FOUND As Integer = &HC0000034

    Private NT_STATUS_OBJECT_NAME_NOT_FOUND As Integer = &HC0000034

    Private NT_STATUS_OBJECT_NAME_NOT_FOUND As Integer = &HC0000034

    If ret <> 0 And ret <> NT_STATUS_OBJECT_NAME_NOT_FOUND Then

internal static extern NET_API_STATUS NetValidatePasswordPolicy(

    public NET_API_STATUS ValidationStatus;

internal enum NET_API_STATUS : uint

private static extern NET_API_STATUS NetValidatePasswordPolicyFree(ref IntPtr OutputArg);

        NET_API_STATUS status = NetValidatePasswordPolicy(serverName, IntPtr.Zero, NET_VALIDATE_PASSWORD_TYPE.NetValidatePasswordChange, inputPointer, ref outputPointer);

        if (status == NET_API_STATUS.NERR_Success)

            if (outputArgs.ValidationStatus == NET_API_STATUS.NERR_Success)

    SC_MANAGER_QUERY_LOCK_STATUS = 0x00010,

        SC_MANAGER_QUERY_LOCK_STATUS |

        SC_MANAGER_QUERY_LOCK_STATUS,

    SC_MANAGER_QUERY_LOCK_STATUS = &H10

    SC_MANAGER_QUERY_LOCK_STATUS Or _

    SC_MANAGER_QUERY_LOCK_STATUS

    Const SC_MANAGER_QUERY_LOCK_STATUS As Int32 = &H10

                        SC_MANAGER_QUERY_LOCK_STATUS Or _

For infoLevel only SC_STATUS_PROCESS_INFO (0x0) is allowed .

See SERVICE_STATUS_PROCESS definition.

    public static SERVICE_STATUS_PROCESS QueryServiceStatusEx(IntPtr serviceHandle)

        return (SERVICE_STATUS_PROCESS)Marshal.PtrToStructure(buf, typeof(SERVICE_STATUS_PROCESS));

For infoLevel only SC_STATUS_PROCESS_INFO (0x0) is allowed .

See SERVICE_STATUS_PROCESS definition.

//NB for this code to work you will need to change the SERVICE_STATUS_PROCESS class to a struct

    public static SERVICE_STATUS_PROCESS QueryServiceStatusEx(SafeHandle serviceHandle)

             pData = Marshal.AllocHGlobal(sizeof(SERVICE_STATUS_PROCESS));

            bool bOk = QueryServiceStatusEx(serviceHandle.DangerousGetHandle(), 0, pData, sizeof(SERVICE_STATUS_PROCESS), out

            SERVICE_STATUS_PROCESS pStatus = (SERVICE_STATUS_PROCESS)Marshal.PtrToStructure(pData, typeof(SERVICE_STATUS_PROCESS));

public struct SERVICE_STATUS_PROCESS

Public Structure SERVICE_STATUS_PROCESS

                    [MarshalAs(UnmanagedType.U4)] WINDOWS_STATION_ACCESS_MASK desiredAccess,

    internal enum WINDOWS_STATION_ACCESS_MASK : uint

                WINDOWS_STATION_ACCESS_MASK.WINSTA_ALL_ACCESS, null);

const uint EVENT_OBJECT_STATECHANGE = 0x800A; // hwnd ID idChild is item w/ state change

    const int TCIF_STATE = 0x10;

    tcitem.mask = TCIF_STATE | TCIF_TEXT;

   ref FAX_DEVICE_STATUS DeviceStatus);

    [DllImport("Netapi32.dll", CharSet = CharSet.Auto/*, SetLastError=true //Return value (NET_API_STATUS) contains error */)]

        Dim state As DFS_STORAGE_STATES

    DFS_STORAGE_STATES state;

[2014-02-27] The function does not set the last error value, the error is returned directly and is in NET_API_STATUS format /Stoyan Sabev/

            if (storage.State == (DFS_STORAGE_STATE_ACTIVE | DFS_STORAGE_STATE_ONLINE)) ActiveOnlineServer = storage.ServerName;

            if (storage.State == (DFS_STORAGE_STATE_ACTIVE | DFS_STORAGE_STATE_ONLINE))

[DllImport("Netapi32.dll", CharSet=CharSet.Unicode/*, SetLastError=true //Return value (NET_API_STATUS) contains error */)]

[Stoyan Sabev] The function does not set the last error value, the error is returned directly and is NET_API_STATUS form

    'NET_API_STATUS NetFileClose(

    'NET_API_STATUS NetFileEnum(

    ByRef bufferType As NETSETUP_JOIN_STATUS) _

    As NET_API_STATUS

} // NETSETUP_JOIN_STATUS

NET_API_STATUS - Possible return values are NERR_Success and ERROR_NOT_ENOUGH_MEMORY

Public Enum NETSETUP_JOIN_STATUS As UInteger

    Public GroupType As NETSETUP_JOIN_STATUS

Public Enum NET_API_STATUS As UInteger

Public Enum NETSETUP_JOIN_STATUS As UInteger

        ByRef bufferType As NETSETUP_JOIN_STATUS) _

        As NET_API_STATUS

        (ByVal lpBuffer As IntPtr) As NET_API_STATUS

        Dim status As NET_API_STATUS

            If status = NET_API_STATUS.NERR_Success Then

     As NET_API_STATUS

NET_API_STATUS - Possible value are NERR_Success, ERROR_NOT_ENOUGH_MEMORY and ERROR_INVALID_PARAMETER.

     If NetRemoteComputerSupports(ComputerName, Wanted, supports) = NET_API_STATUS.NERR_Success Then

NET_API_STATUS NetSessionDel(

        ERROR_INVALID_HANDLE_STATE = 1609,