Groups

IdentityReferenceCollection? System.Security.Principal.WindowsIdentity.Groups

get

Definition at line 225 of file WindowsIdentity.cs.

    {
        get
        {
            if (_safeTokenHandle.IsInvalid)
            {
                return null;
            }
            if (_groups == null)
            {
                IdentityReferenceCollection identityReferenceCollection = new IdentityReferenceCollection();
                using (SafeLocalAllocHandle safeLocalAllocHandle = GetTokenInformation(_safeTokenHandle, TokenInformationClass.TokenGroups))
                {
                    global::Interop.SID_AND_ATTRIBUTES[] array = new global::Interop.SID_AND_ATTRIBUTES[safeLocalAllocHandle.Read<global::Interop.TOKEN_GROUPS>(0uL).GroupCount];
                    safeLocalAllocHandle.ReadArray((uint)Marshal.OffsetOf<global::Interop.TOKEN_GROUPS>("Groups").ToInt32(), array, 0, array.Length);
                    global::Interop.SID_AND_ATTRIBUTES[] array2 = array;
                    for (int i = 0; i < array2.Length; i++)
                    {
                        global::Interop.SID_AND_ATTRIBUTES sID_AND_ATTRIBUTES = array2[i];
                        uint num = 3221225492u;
                        if ((sID_AND_ATTRIBUTES.Attributes & num) == 4)
                        {
                            identityReferenceCollection.Add(new SecurityIdentifier(sID_AND_ATTRIBUTES.Sid));
                        }
                    }
                }
                Interlocked.CompareExchange(ref _groups, identityReferenceCollection, null);
            }
            return _groups;
        }
    }