İkinci basit Web Part'ımız.

string getWeatherFromChache(string Sehir)
{
   if (HttpContext.Current.Cache[Sehir] == N')
   {
      try
      {
         string servis = "http://www.webservicex.net/globalweather.asmx/GetWeather?CityName=" + Sehir + "&CountryName=turkey";
         WebClient client = new WebClient();
         string data = client.DownloadString(servis);
         XmlDocument doc = new XmlDocument();
         doc.LoadXml(data);
         string nodes = doc.GetElementsByTagName("string")[0].InnerText;
         doc.LoadXml(nodes);
         string Temperature = doc.SelectSingleNode("/CurrentWeather/Temperature").InnerText;
         string RelativeHumidity = doc.SelectSingleNode("/CurrentWeather/RelativeHumidity").InnerText;
         StringBuilder sb = new StringBuilder();
         sb.Append("<table style=font-family:verdana;font-size:12px; border=0 width=100%><tr>");
         sb.Append("<td width=20%><b>Sıcaklık : </b></td>");
         sb.Append("<td width=80%>");
         sb.Append(Temperature);
         sb.Append("</td></tr>");
         sb.Append("<td><b>Nem : </b></td>");
         sb.Append("<td>");
         sb.Append(RelativeHumidity);
         sb.Append("</td></tr>");
         sb.Append("</table>");
         HttpContext.Current.Cache.Insert(Sehir, sb.ToString(), N', DateTime.Now.AddHours(5), TimeSpan.Zero);
      }
      catch
      {
         HttpContext.Current.Cache.Insert(Sehir, "Bilgi alınamıyor.", N', DateTime.Now.AddSeconds(5), TimeSpan.Zero);
      }
   }
   return HttpContext.Current.Cache[Sehir].ToString();
}

Şehir Listesi:

<?xml version="1.0" encoding="utf-8" ?>
<Sehirler>
   <Sehir>Istanbul / Ataturk</Sehir>
   <Sehir>Ankara / Esenboga</Sehir>
   <Sehir>Ankara / Etimesgut</Sehir>
   <Sehir>Murted Tur-Afb</Sehir>
   <Sehir>Adana / Sakirpasa</Sehir>
   <Sehir>Adana / Incirlik</Sehir>
   <Sehir>Afyon</Sehir>
   <Sehir>Antalya</Sehir>
   <Sehir>Gaziantep</Sehir>
   <Sehir>Iskenderun</Sehir>
   <Sehir>Konya</Sehir>
   <Sehir>Merzifon</Sehir>
   <Sehir>Samsun</Sehir>
   <Sehir>Sivas</Sehir>
   <Sehir>Zonguldak</Sehir>
   <Sehir>Malatya / Erhac</Sehir>
   <Sehir>Kayseri / Erkilet</Sehir>
   <Sehir>Sivrihisar</Sehir>
   <Sehir>Tokat</Sehir>
   <Sehir>Aydin</Sehir>
   <Sehir>Bursa</Sehir>
   <Sehir>Balikesir</Sehir>
   <Sehir>Bandirma</Sehir>
   <Sehir>Canakkale</Sehir>
   <Sehir>Eskisehir</Sehir>
   <Sehir>Izmir / Adnan Menderes</Sehir>
   <Sehir>Isparta</Sehir>
   <Sehir>Usak</Sehir>
   <Sehir>Dalaman</Sehir>
   <Sehir>Akhisar</Sehir>
   <Sehir>Corlu</Sehir>
   <Sehir>Bodrum</Sehir>
   <Sehir>Elazig</Sehir>
   <Sehir>Diyarbakir</Sehir>
   <Sehir>Erzincan</Sehir>
   <Sehir>Erzurum</Sehir>
   <Sehir>Kars</Sehir>
   <Sehir>Trabzon</Sehir>
   <Sehir>Urfa</Sehir>
   <Sehir>Van</Sehir>
   <Sehir>Batman</Sehir>
</Sehirler>