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Retrieve an RSS feed in Visual C# 2005 : Problem with the first line (<?xml version ...)

Posted on 2008-06-11
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Last Modified: 2013-11-26
Hi there,

My aim is to write a widget in C# 2005 to retrieve an RSS feed.

I found the following code in internet (http://www.codeproject.com/KB/macros/BlogReaderArticle.aspx)
but I can't manage to make it work.

The stream I get contains

<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0" ...

and I get an exception saying "Root element missing" in line

    while (xml.Read()

I imagine the line "<?xml ..." messes things up.

Is there a simple way to get rid off this line in the stream ?

Thanks in advance
HttpWebRequest webreq = (HttpWebRequest)WebRequest.Create("http://MyAddress");
            HttpWebResponse webresp = (HttpWebResponse)webreq.GetResponse();
            StreamReader rss = new StreamReader(
             webresp.GetResponseStream(), Encoding.ASCII);
 
            if (rss != null)
            {
                ParseRSS(rss.BaseStream); //Close the stream from the server
                rss.Close();
            }
 
 
 
 
        public void ParseRSS(Stream rss)
        {
            XmlTextReader xml = null;
            xml = new XmlTextReader(rss);
            while (xml.Read())
            {
                if (xml.Depth == 2 && xml.Name == "title" &&
                    xml.IsStartElement("title"))
                {
                    xml.Read();
                    MessageBox.Show("title : " + xml.Value.ToString());
                    continue;
                }
 
                if (xml.Depth == 2 && xml.Name == "description" &&
                xml.IsStartElement("description"))
                {
                    xml.Read();
                    MessageBox.Show("description : " + xml.Value.ToString());
                    continue;
                }
            }
        }

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Question by:B_B_Boris
1 Comment
 
LVL 8

Accepted Solution

by:
CoyotesIT earned 2000 total points
ID: 21762570
Hey there.
I have played around with this before and built my own readers/creators for Rss, but I have to say that once I stumbled upon this it made life a lot easier, with much less coding to get the data I was going for.

Take a look here at this project on sourceforge and see if this can save you time and get you what you want.

http://rss-net.sourceforge.net/

You will need to download the nightly tar http://rss-net.sourceforge.net/RSS.NET.tar.gz and build the project, then just add the RSS.NET dll to as a reference to your project.

Then use for example: http://www.alexandre-gomes.com/?p=89






private void ParseRss()
{
    Rss.RssFeed feed = Rss.RssFeed.Read("http://ask.yahoo.com/index.xml");
    Rss.RssChannel channel = feed.Channels[0];
 
    foreach (Rss.RssItem item in channel.Items)
    {
        Response.Write(String.Format("<a href='{0}' title='{1}'>{1}</a><br />", item.Link, item.Title));
    }
}

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