Opc.Ua.Server.GenericEvent.GetAttributeValue C# (CSharp) Method

        public override object GetAttributeValue(
            FilterContext        context,
            NodeId               typeDefinitionId,
            IList<QualifiedName> relativePath,
            uint                 attributeId,
            NumericRange         indexRange)
        {
            if (context == null) throw new ArgumentNullException("context");

            // check type definition.
            if (!Server.TypeTree.IsTypeOf(this.TypeDefinitionId, typeDefinitionId))
            {
                return null;
            }

            // lookup extended properties.
            if (relativePath == null || relativePath.Count == 1)
            {
                object value = null;

                if (m_values.TryGetValue(relativePath[0], out value))
                {
                    return value;
                }
            }

            // read the attribute value.
            DataValue dataValue = ReadAttributeValue(
                context,
                typeDefinitionId,
                relativePath,
                attributeId,
                indexRange);

            if (StatusCode.IsBad(dataValue.StatusCode))
            {
                return dataValue.StatusCode;
            }
                        
            // return the value.
            return dataValue.Value;
        }
        #endregion