C# read weather xml

  1     /// <summary>
  2     ///  Msn天气预报
  3     /// 涂聚文 2011-02-16 因为被扒手把移动硬盘扒了.重新写.几年的代码因为没有备份,全泡了.重新开始.
  4     /// </summary>
  5     public class MsnWeatherAPI
  6     {
  7         /// <summary>
  8         ///  Msn天气预报
  9         /// </summary>
 10         /// <param name="wealocations"></param>
 11         /// <param name="weadegreetype">c,f</param>
 12         /// <returns></returns>
 13         public static MsnConditions GetCurrentConditions(string wealocations, string weadegreetype)
 14         {
 15             string weatherXML = string.Empty;
 16             WebClient wc = new WebClient();
 17             wc.Encoding = System.Text.Encoding.UTF8;
 18             wc.Credentials = CredentialCache.DefaultCredentials;//获取或设置用于对向Internet资源的请求进行身份验证的网络凭据。
 19             MsnConditions conditions = new MsnConditions();
 20             XmlDocument xmlConditions = new XmlDocument();
 21             string url = string.Format("http://weather.msn.com/data.aspx?wealocations=wc:{0}&weadegreetype={1}", wealocations, weadegreetype);
 22             byte[] bt = bt = wc.DownloadData(url);
 23             wc.Dispose();
 24             string data1 = System.Text.Encoding.Default.GetString(bt);
 25             xmlConditions.LoadXml(data1);
 26             //xmlConditions.Load(url);
 27             //XmlNamespaceManager ns = new XmlNamespaceManager(xmlConditions.NameTable);
 28             XmlNodeList nodes = xmlConditions.DocumentElement.SelectNodes("/weatherdata/weather");
 29 
 30             //1.可以用
 31             #region 
 32 
 33             //XmlNodeList elemList = xmlConditions.GetElementsByTagName("weather");
 34             //for (int i = 0; i < elemList.Count; i++)
 35             //{
 36             //    conditions.WeatherLocationcode = elemList[i].Attributes["weatherlocationcode"].Value;
 37             //    onditions.WeatherLocationname = elemList[i].Attributes["weatherlocationname"].Value;
 38             //}
 39             #endregion 
 40 
 41 
 42             //2.可以用
 43             #region 
 44             //System.Net.WebRequest request = System.Net.WebRequest.Create(url);//创建对weatherURL请求 
 45             //request.Credentials = System.Net.CredentialCache.DefaultCredentials;//安全设置 
 46             //System.Net.HttpWebResponse response = (System.Net.HttpWebResponse)request.GetResponse();//得到响应 
 47             //if (response.StatusDescription.ToUpper() == "OK")
 48             //{
 49             //    System.IO.Stream weatherStream = response.GetResponseStream();
 50             //    System.IO.StreamReader read = new System.IO.StreamReader(weatherStream);
 51             //    weatherXML = read.ReadToEnd();
 52             //    read.Close();
 53             //    weatherStream.Close();
 54             //}
 55             //else
 56             //{
 57             //    weatherXML = string.Empty;
 58             //}
 59             //response.Close();
 60             //
 61             //XmlReader reader = XmlReader.Create(new System.IO.StringReader(weatherXML));
 62             ////XmlTextReader reader = new XmlTextReader(url);
 63 
 64             //while (reader.Read())
 65             //{
 66                 
 67             //    if (reader.IsStartElement())
 68             //    {
 69             //        switch (reader.Name)
 70             //        {
 71             //            case "weather":                         
 72             //                    reader.MoveToAttribute("weatherlocationname");
 73             //                    conditions.WeatherLocationcode = reader.Value;
 74             //                    reader.MoveToAttribute("lat");
 75             //                    conditions.Latitude = reader.Value;
 76             //                    reader.MoveToAttribute("long");
 77             //                    conditions.Longitude = reader.Value;
 78             //                    break;
 79 
 80             //        }
 81 
 82             //    }
 83 
 84 
 85             //}
 86             #endregion 
 87             //3.可以用
 88             try
 89             {
 90                 if (xmlConditions.SelectSingleNode("/weatherdata/weather") == null)
 91                 {
 92                     conditions = null;
 93                     return conditions;
 94                 }
 95                 else
 96                 {
 97                     foreach (XmlNode node in nodes)
 98                     {
 99                         conditions.WeatherLocationcode = node.Attributes["weatherlocationcode"].Value;
100                         conditions.WeatherLocationname = node.Attributes["weatherlocationname"].Value;
101                         conditions.ZipCode = node.Attributes["zipcode"].Value;
102                         conditions.Latitude = node.Attributes["lat"].Value;
103                         conditions.Longitude = node.Attributes["long"].Value;
104                         conditions.TimeZone = node.Attributes["timezone"].Value;
105                         conditions.EntityId = node.Attributes["entityid"].Value;
106                     }
107                     return conditions;
108                 }
109 
110             }
111             catch (Exception ex)
112             {
113                 conditions = null;                
114                 string err = ex.Message.ToString();
115                 return conditions;
116             }
117             
118         }
119     }