Chaos.Portal.Core.Data.PortalRepository.GroupAddUser C# (CSharp) Method

        public uint GroupAddUser(Guid guid, Guid userGuid, uint systemPermission, Guid? requestUserGuid)
        {
            var result = Gateway.ExecuteNonQuery("Group_AssociateWithUser", new[]
                {
                    new MySqlParameter("GroupGUID", guid.ToByteArray()),
                    new MySqlParameter("UserGUID", userGuid.ToByteArray()),
                    new MySqlParameter("Permission", systemPermission),
                    new MySqlParameter("RequestUserGUID", requestUserGuid.HasValue ? requestUserGuid.Value.ToByteArray() : null)
                });

            if (result == -100) throw new InsufficientPermissionsException("User does not have permission to add user to group");

            return (uint)result;
        }