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();

          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

See SERVICE_STATUS_PROCESS definition.

    public static SERVICE_STATUS_PROCESS QueryServiceStatusEx(IntPtr serviceHandle)

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

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