Opc.Ua.BinaryDecoder.ReadDataValue C# (CSharp) Method

        public DataValue ReadDataValue(string fieldName)
        {
            // read the encoding byte.
            byte encodingByte = m_reader.ReadByte();

            DataValue value = new DataValue();
                        
            // read the fields of the DataValue structure.
            if ((encodingByte & (byte)DataValueEncodingBits.Value) != 0)
            {
                value.WrappedValue = ReadVariant(null);
            }

            if ((encodingByte & (byte)DataValueEncodingBits.StatusCode) != 0)
            {
                value.StatusCode = ReadStatusCode(null);
            }

            if ((encodingByte & (byte)DataValueEncodingBits.SourceTimestamp) != 0)
            {
                value.SourceTimestamp = ReadDateTime(null);
            }

            if ((encodingByte & (byte)DataValueEncodingBits.SourcePicoseconds) != 0)
            {
                value.SourcePicoseconds = ReadUInt16(null);
            }
            
            if ((encodingByte & (byte)DataValueEncodingBits.ServerTimestamp) != 0)
            {
                value.ServerTimestamp = ReadDateTime(null);
            }

            if ((encodingByte & (byte)DataValueEncodingBits.ServerPicoseconds) != 0)
            {
                value.ServerPicoseconds = ReadUInt16(null);
            }
            
            return value;
        }

        /// <summary>
        /// Converts a VARIANT value to a Builtin Type.
        /// </summary>
        private object VariantValueToScalarValue(object value, NodeId builtinTypeId)
        {        
            switch ((uint)builtinTypeId.Identifier)
            {
                case DataTypes.Guid:
                {
                    return new Uuid((string)value);
                }

                case DataTypes.XmlElement:
                {    
                    XmlDocument document = new XmlDocument();
                    document.InnerXml = (string)value;
                    return document.DocumentElement;
                }

                case DataTypes.NodeId:
                {
                    return NodeId.Parse((string)value);
                }

                case DataTypes.ExpandedNodeId:
                {
                    return ExpandedNodeId.Parse((string)value);
                }

                case DataTypes.QualifiedName:
                {
                    return QualifiedName.Parse((string)value);
                }

                case DataTypes.LocalizedText:
                {
                    return new LocalizedText(ComUtils.GetLocale(m_lcid), (string)value);
                }

                case DataTypes.StatusCode:
                {
                     return new StatusCode((uint)value);
                }

                case DataTypes.DiagnosticInfo:
                {
                    BinaryDecoder decoder = new BinaryDecoder((byte[])value, m_session.MessageContext);
                    DiagnosticInfo decodedValue = decoder.ReadDiagnosticInfo(null);
                    decoder.Close();
                    return decodedValue; 
                }

                case DataTypes.DataValue:
                {
                    BinaryDecoder decoder = new BinaryDecoder((byte[])value, m_session.MessageContext);
                    DataValue decodedValue = decoder.ReadDataValue(null);
                    decoder.Close();
                    return decodedValue; 
                }

                case DataTypes.Structure:
                {
                    BinaryDecoder decoder = new BinaryDecoder((byte[])value, m_session.MessageContext);
                    ExtensionObject decodedValue = decoder.ReadExtensionObject(null);
                    decoder.Close();
                    return decodedValue; 
                }
            }

            return value;
        }