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ASP.NET - How to use System.Xml.Linq.XElement to write XML

Posted on 2010-08-24
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1,140 Views
Last Modified: 2013-11-11
Hi Experts,

I have got the following code that reads BBC RSS. I need to have this code object write this XML into a file. I used to do that with Dataset.WriteXML with one line, but seem not to know the way with linq:

    Function getRSSPosts(ByVal sLink As String) As Object
        Dim rssFeed As XDocument = XDocument.Load(sLink)

        Dim posts = From item In rssFeed.Descendants("item") _
                    Select Title = item.Element("title").Value, _
                           Published = item.Element("pubDate").Value, _
                           Description = item.Element("description").Value, _
                           Link = item.Element("link").Value
        Return posts

    End Function
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Question by:feesu
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6 Comments
 
LVL 53

Expert Comment

by:Dhaest
ID: 33509725
An Example. You should get the idea.


XElement xml = new XElement("RSSFeeds", 
            From item In rssFeed.Descendants("item") 
            select new XElement("RSSFeed", 
                new XElement("Title", item.Element("title").Value), 
                new XElement("Published", item.Element("pubDate").Value), 
                new XElement("Description ", item.Element("description").Value), 
                new XElement("LIink", item.Element("link").Value)
                ) 
            ); 

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Author Comment

by:feesu
ID: 33509767
I still can't get it! Plus, can you write it with vb?
0
 
LVL 53

Expert Comment

by:Dhaest
ID: 33509826
Write an XML File Using LINQ to XML
http://blog.linqexchange.com/index.php/how-to-write-an-xml-file-using-linq-to-xml/
XDocument xdoc = new XDocument(
                new XDeclaration("1.0", "utf-8", "yes"),
                new XComment("List of RSSFeeds"),
            XElement xml = new XElement("RSSFeeds", 
            From item In rssFeed.Descendants("item") 
            select new XElement("RSSFeed", 
                new XElement("Title", item.Element("title").Value), 
                new XElement("Published", item.Element("pubDate").Value), 
                new XElement("Description ", item.Element("description").Value), 
                new XElement("LIink", item.Element("link").Value)
                ) 
            ); 
            // save the document
            xdoc.Save(@"c:temp2sample.xml");

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Author Comment

by:feesu
ID: 33623351
Thank you for the code. I will try it out and get back to you!
0
 

Author Comment

by:feesu
ID: 33710453
Dhaest,

I tried to convert your code to vb but I got an error on several converters. Can you post the code in vb for me?
0
 

Accepted Solution

by:
feesu earned 0 total points
ID: 33710607
Dhaest,

I solved it by simply adding the following line in the main getPosts function right before the Return!

        rssFeed.Save(Server.MapPath("~\RSS_BBC.xml"))


Thank you for your time!
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