/// <summary>
 /// The class constructor. 
 /// </summary>
 public WeatherData(Location loc, Time time, Temperature temp, string clouds)
 {
     this.Loc = loc;
     this.Time = time;
     this.Temperature = temp;
     this.Clouds = clouds;
 }
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        /// <summary>
        /// Return comparing results
        /// </summary>
        public bool Equals(Time time)
        {
            // If parameter is null return false:
            if ((object)time == null)
            {
                return false;
            }

            // Return true if the fields match:
            return ((this.From.Equals(time.From, StringComparison.Ordinal)) && (this.To.Equals(time.To, StringComparison.Ordinal)));
        }
        /// <summary>
        /// Parsing of weather data service XML - returns WeatherData object with all weather details
        /// </summary>
        private WeatherData ParseWeatherDataXml(string url)
        {
            XDocument xdoc = null;
            WeatherData wd = null;

            try
            {
                //getting xml document from url
                string xml = new WebClient().DownloadString(url);
                xdoc = XDocument.Parse(xml);

                var locNode = xdoc.Element("weatherdata").Element("location");
                var timeNode = xdoc.Element("weatherdata").Element("forecast").Element("time");

                //getting location values from xml
                Location location = new Location(locNode.Element("name").Value, locNode.Element("country").Value);

                //getting time values from xml
                Time time = new Time(timeNode.Attribute("from").Value, timeNode.Attribute("to").Value);

                //getting clouds description from xml
                string clouds = timeNode.Element("clouds").Attribute("value").Value;

                //getting temperature description from xml
                Temperature temp = new Temperature(timeNode.Element("temperature").Attribute("unit").Value,
                    Convert.ToDouble(timeNode.Element("temperature").Attribute("value").Value),
                    Convert.ToDouble(timeNode.Element("temperature").Attribute("min").Value),
                    Convert.ToDouble(timeNode.Element("temperature").Attribute("max").Value));

                //construct WeatherData object with all data
                wd = new WeatherData(location, time, temp, clouds);
            }
            catch (System.Net.WebException e)
            {
                throw new WeatherDataServiceException("Problem with downloading xml", e);
            }
            catch (System.Xml.XmlException e)
            {
                throw new WeatherDataServiceException("Problem with parsing xml", e);
            }
            catch (System.NullReferenceException e)
            {
                throw new WeatherDataServiceException("Element/Attribute name is incorrect", e);
            }

            return wd;
        }
        private WeatherData GetWeatherDataForTest(string url)
        {
            string xml = new WebClient().DownloadString(url);
            XDocument xdoc = XDocument.Parse(xml);

            //getting values from xml
            var path = xdoc.Element("weatherdata").Element("location");
            Location location = new Location(path.Element("name").Value, path.Element("country").Value);
            path = xdoc.Element("weatherdata").Element("forecast").Element("time");
            Time time = new Time(path.Attribute("from").Value, path.Attribute("to").Value);
            string clouds = path.Element("clouds").Attribute("value").Value;
            Temperature temp = new Temperature(path.Element("temperature").Attribute("unit").Value,
                    Convert.ToDouble(path.Element("temperature").Attribute("value").Value),
                    Convert.ToDouble(path.Element("temperature").Attribute("min").Value),
                    Convert.ToDouble(path.Element("temperature").Attribute("max").Value));
               return new WeatherData(location, time, temp, clouds);
        }