Opc.Ua.MethodState.WriteNonValueAttribute C# (CSharp) Method

        protected override ServiceResult WriteNonValueAttribute(
            ISystemContext context,
            uint attributeId,
            object value)
        {
            ServiceResult result = null;

            switch (attributeId)
            {
                case Attributes.Executable:
                {
                    bool? executableRef = value as bool?;

                    if (executableRef == null)
                    {
                        return StatusCodes.BadTypeMismatch;
                    }

                    if ((WriteMask & AttributeWriteMask.Executable) == 0)
                    {
                        return StatusCodes.BadNotWritable;
                    }

                    bool executable = executableRef.Value;

                    if (OnWriteExecutable != null)
                    {
                        result = OnWriteExecutable(context, this, ref executable);
                    }

                    if (ServiceResult.IsGood(result))
                    {
                        Executable = executable;
                    }

                    return result;
                }

                case Attributes.UserExecutable:
                {
                    bool? userExecutableRef = value as bool?;

                    if (userExecutableRef == null)
                    {
                        return StatusCodes.BadTypeMismatch;
                    }

                    if ((WriteMask & AttributeWriteMask.UserExecutable) == 0)
                    {
                        return StatusCodes.BadNotWritable;
                    }

                    bool userExecutable = userExecutableRef.Value;

                    if (OnWriteUserExecutable != null)
                    {
                        result = OnWriteUserExecutable(context, this, ref userExecutable);
                    }

                    if (ServiceResult.IsGood(result))
                    {
                        UserExecutable = userExecutable;
                    }

                    return result;
                }
            }

            return base.WriteNonValueAttribute(context, attributeId, value);
        }
        #endregion