Asp.Net XML Dosyasından Veri Çekme (Döviz Kuru Çekme TCMB )

 WebForm Tarafı
<table class="doviz">
   <tr>
        <td>

        </td>
        <td>
             <span style="color:green">  ALIŞ </span>
        </td>
        <td>
              <span style="color:green">  SATIŞ </span>
        </td>
   </tr>
   <tr>
        <td>
             <img src="images/dolar.png" /><span style="color:green">  USD </span></td>
        <td>
              <asp:Label ID="lblDolarAlis" runat="server" Text=""></asp:Label>
        </td>
        <td>
              <asp:Label ID="lblDolarSatis" runat="server" Text=""></asp:Label>
        </td>
    </tr>
    <tr>
        <td>
           <img src="images/euro.png" /> <span style="color:green"> EURO </span>
        </td>
        <td>
             <asp:Label ID="lblEuroAlis" runat="server" Text=""></asp:Label>
        </td>
        <td>
             <asp:Label ID="lblEuroSatis" runat="server" Text=""></asp:Label>
       </td>
   </tr>
</table>


C# Tarafı
public void dovizKuruCek(){



        XmlDocument xmlVerisi = new XmlDocument();
        xmlVerisi.Load("http://www.tcmb.gov.tr/kurlar/today.xml");
        decimal dolarsatis = Convert.ToDecimal(xmlVerisi.SelectSingleNode(string.Format("Tarih_Date/Currency[@Kod='{0}']/ForexSelling", "USD")).InnerText.Replace(',', '.'));
        decimal Eurosatis = Convert.ToDecimal(xmlVerisi.SelectSingleNode(string.Format("Tarih_Date/Currency[@Kod='{0}']/ForexSelling", "EUR")).InnerText.Replace(',','.'));
        lblDolarSatis.Text = string.Format(dolarsatis.ToString(), "{0:F2}");
        lblEuroSatis.Text = string.Format(Eurosatis.ToString(),"{0:F2}");

        decimal dolaralis = Convert.ToDecimal(xmlVerisi.SelectSingleNode(string.Format("Tarih_Date/Currency[@Kod='{0}']/ForexBuying", "USD")).InnerText.Replace(',', '.'));
        decimal Euroalis = Convert.ToDecimal(xmlVerisi.SelectSingleNode(string.Format("Tarih_Date/Currency[@Kod='{0}']/ForexBuying", "EUR")).InnerText.Replace(',', '.'));
        lblDolarAlis.Text =string.Format( dolaralis.ToString(),"{0:F2}");
        lblEuroAlis.Text = string.Format(Euroalis.ToString(),"{0:F2}");


    
    }