string pTrusteeName,

    ByVal pTrusteeName As String, _

private static extern void BuildTrusteeWithSid(ref TRUSTEE pTrustee, IntPtr sid);

    Private Declare Auto Sub BuildTrusteeWithSid Lib "advapi32.dll" ( _

    ByVal pTrustee As IntPtr, _

TRUSTEE

        Dim t As TRUSTEE

        ' Build a trustee

        pTrustee = Marshal.AllocHGlobal(Marshal.SizeOf(t))

        BuildTrusteeWithSid(pTrustee, pSID)

        Ace["Trustee"] = Win32_Trustee(Account);

    private static ManagementObject Win32_Trustee(string Account)

        ManagementObject Trustee = new System.Management.ManagementClass("Win32_Trustee").CreateInstance();

        Trustee["SID"] = SID;

        return Trustee;

static extern uint GetEffectiveRightsFromAcl(IntPtr pDacl, ref TRUSTEE pTrustee, ref int pAccessRights);

    ByVal pTrustee As IntPtr, _

TRUSTEE

    '  PTRUSTEE pTrustee,

    ret = GetEffectiveRightsFromAcl(pDACL, pTrustee, Mask)

    Dim Trustee As Trustee

    ///The client who called IAccessControl::IsAccessPermitted was not the trustee provided to the method

    [Description("The client who called IAccessControl::IsAccessPermitted was not the trustee provided to the method")]

    public const int CO_E_TRUSTEEDOESNTMATCHCLIENT = unchecked((int)0x80010127);

    ///One of the trustee strings provided by the user did not conform to the &lt;Domain>\<Name> syntax and it was not the "*" string

    [Description("One of the trustee strings provided by the user did not conform to the <Domain>\\<Name> syntax and it was not the \"*\" string")]

    public const int CO_E_WRONGTRUSTEENAMESYNTAX = unchecked((int)0x8001012C);

    ///Unable to convert a wide character trustee string to a multibyte trustee string

    [Description("Unable to convert a wide character trustee string to a multibyte trustee string")]

    ///Unable to find a security identifier that corresponds to a trustee string provided by the user

    [Description("Unable to find a security identifier that corresponds to a trustee string provided by the user")]

    ///Unable to find a trustee name that corresponds to a security identifier provided by the user

    [Description("Unable to find a trustee name that corresponds to a security identifier provided by the user")]

    '''The client who called IAccessControl::IsAccessPermitted was not the trustee provided to the method

    <Description("The client who called IAccessControl::IsAccessPermitted was not the trustee provided to the method")> _

    Public Const CO_E_TRUSTEEDOESNTMATCHCLIENT As Integer = CInt(&H80010127UI)

    '''One of the trustee strings provided by the user did not conform to the &lt;Domain>\<Name> syntax and it was not the "*" string

    <Description("One of the trustee strings provided by the user did not conform to the <Domain>\<Name> syntax and it was not the ""*"" string")> _

    Public Const CO_E_WRONGTRUSTEENAMESYNTAX As Integer = CInt(&H8001012cUI)

    '''Unable to convert a wide character trustee string to a multibyte trustee string

    <Description("Unable to convert a wide character trustee string to a multibyte trustee string")> _

    '''Unable to find a security identifier that corresponds to a trustee string provided by the user

    <Description("Unable to find a security identifier that corresponds to a trustee string provided by the user")> _

    '''Unable to find a trustee name that corresponds to a security identifier provided by the user

    <Description("Unable to find a trustee name that corresponds to a security identifier provided by the user")> _

enum TRUSTEE_FORM {

   TRUSTEE_IS_SID,

   TRUSTEE_IS_NAME,

   TRUSTEE_BAD_FORM,

   TRUSTEE_IS_OBJECTS_AND_SID,

   TRUSTEE_IS_OBJECTS_AND_NAME

    Enum TRUSTEE_FORM

    TRUSTEE_IS_SID

    TRUSTEE_IS_NAME

    TRUSTEE_BAD_FORM

    TRUSTEE_IS_OBJECTS_AND_SID

    TRUSTEE_IS_OBJECTS_AND_NAME

        /// The client who called IAccessControl::IsAccessPermitted was not the trustee provided to the method

        public const int CO_E_TRUSTEEDOESNTMATCHCLIENT = (int)(0x80010127 - 0x100000000);

        /// One of the trustee strings provided by the user did not conform to the <Domain>\<Name> syntax and it was not the "*" string

        public const int CO_E_WRONGTRUSTEENAMESYNTAX = (int)(0x8001012C - 0x100000000);

        /// Unable to convert a wide character trustee string to a multibyte trustee string

        /// Unable to find a security identifier that corresponds to a trustee string provided by the user

        /// Unable to find a trustee name that corresponds to a security identifier provided by the user

    TRUSTEE Trustee;

    Dim Trustee As TRUSTEE

TRUSTEE

private enum MULTIPLE_TRUSTEE_OPERATION

    NO_MULTIPLE_TRUSTEE,

    TRUSTEE_IS_IMPERSONATE

private enum TRUSTEE_FORM

    TRUSTEE_IS_SID,

    TRUSTEE_IS_NAME,

    TRUSTEE_BAD_FORM,

    TRUSTEE_IS_OBJECTS_AND_SID,

    TRUSTEE_IS_OBJECTS_AND_NAME

private enum TRUSTEE_TYPE

    TRUSTEE_IS_UNKNOWN,

    TRUSTEE_IS_USER,

    TRUSTEE_IS_GROUP,

    TRUSTEE_IS_DOMAIN,

    TRUSTEE_IS_ALIAS,

    TRUSTEE_IS_WELL_KNOWN_GROUP,

    TRUSTEE_IS_DELETED,

    TRUSTEE_IS_INVALID,

    TRUSTEE_IS_COMPUTER

private struct TRUSTEE : IDisposable

    public IntPtr pMultipleTrustee;

    public MULTIPLE_TRUSTEE_OPERATION MultipleTrusteeOperation;

    public TRUSTEE_FORM TrusteeForm;

    public TRUSTEE_TYPE TrusteeType;

    Public Structure TRUSTEE

    Dim pMultipleTrustee As IntPtr ' must be null

    Dim MultipleTrusteeOperation As Integer

    Dim TrusteeForm As Integer

    Dim TrusteeType As Integer