如何在Visual C＃中读取RSS提要的特定行

Question

我想阅读RSS提要的特定行，以使用visual C＃在标签中显示信息。以下给出的是Rss源。

<?xml version="1.0" encoding="UTF-8"?> 
<rss version="2.0"><channel> 
<title>Weather Underground</title> 
    <link>http://www.wunderground.com/</link> 
    <category>weather</category> 
<item> 
    <title>Current Conditions : 28C, Mostly Cloudy - 9:10 AM IST Jun. 28</title> 
    <link>http://www.wunderground.com/global/stations/43466.html</link> 
    <description><![CDATA[Temperature: 28&deg;C | Humidity: 79% | Pressure: 1011hPa   (Steady) | Conditions: Mostly Cloudy | Wind Direction: SW | Wind Speed: 15km/h<img src="http://server.as5000.com/AS5000/adserver/image?ID=WUND-00071&C=0" width="0" height="0" border="0"/>]]> 
    </description> 
    <pubDate>Thu, 28 Jun 2012 09:10:00 IST</pubDate> 
</item> 

<item> 
    <title>Forecast for Wednesday Night as of Jun. 27 5:30 PM IST</title> 
    <link>http://www.wunderground.com/global/stations/43466.html</link>  
    <description> 
    Chance of a Thunderstorm. Low:26 &amp;deg; C. 
    </description> 
    <pubDate>Wed, 27 Jun 2012 12:00:00 GMT</pubDate> 
    <guid isPermaLink="false">1340798400-1-night</guid> 
    </item> 

    <item> 
     <title>Forecast for Thursday as of Jun. 27 5:30 PM IST</title> 
     <link>http://www.wunderground.com/global/stations/43466.html</link> 
     <description> 
     Chance of a Thunderstorm. High:31 &amp;deg; C.//This is the line that I need 
     </description> 
     <pubDate>Wed, 27 Jun 2012 12:00:00 GMT</pubDate> 
     <guid isPermaLink="false">1340884800-2-day</guid> 
    </item> 

有在这个XML文件我怎么指的是一个，我需要和获取描述标签内的文本许多项目的标签？

Answer 1

你可以做这样的事情阅读所有的描述列表，然后从列表

var rss = XDocument.Load("your rss file"); 
    var items = (from c in rss.Descendants("item") select new{ 
       Title = (string)c.Element("description")  
       }).ToList(); 

// first description 

    string firstitem= items[0].Title.ToString();