ASP.net load XML file from URL

Question

Trying to just simply parse an XML file;

    protected void Page_Load(object sender, EventArgs e)
    {

        XmlDocument xdoc = new XmlDocument();//xml doc used for xml parsing

        xdoc.LoadXml("http://latestpackagingnews.blogspot.com/feeds/posts/default");//loading XML in xml doc

        XmlNodeList xNodelst = xdoc.DocumentElement.SelectNodes("entry");//reading node so that we can traverse thorugh the XML

        foreach (XmlNode xNode in xNodelst)//traversing XML 
        {
            litFeed.Text += "read";
        }

    }

But I get:

Data at the root level is invalid. Line 1, position 1.

Do I have to do an XMLHTTP request to the file first? Or am I right to assume I can load it in from an external url?

Steve B · Accepted Answer · 2011-02-24 10:05:47Z

8

try this :

protected void Page_Load(object sender, EventArgs e)
{

    XmlDocument xdoc = new XmlDocument();//xml doc used for xml parsing

    xdoc.Load(
        "http://latestpackagingnews.blogspot.com/feeds/posts/default"
        );//loading XML in xml doc

    XmlNodeList xNodelst = xdoc.DocumentElement.SelectNodes("entry");//reading node so that we can traverse thorugh the XML

    foreach (XmlNode xNode in xNodelst)//traversing XML 
    {
        litFeed.Text += "read";
    }

}

LoadXml is waiting for an xml string directly, where Load can use an uri to grab the xml data. With your code, the xml parser was actually trying to parse the adress as xml, not the content at the uri location.

[Edit] you may take a look at the builtin feed processing classes of the .Net Framework. These classes are in the System.ServiceModel.Syndication namespace. They can to the parsing job for you quite easily.

edited Feb 24, 2011 at 10:05

answered Feb 24, 2011 at 9:46

Steve B

38k24 gold badges109 silver badges186 bronze badges

Sign up to request clarification or add additional context in comments.

8 Comments

Jeff Parker Over a year ago

Almost correct ... just remove the "new Uri()" bit to my eyes. Load accepts a URL directly, but not a URI object.

Tom Gullen Over a year ago

Neither of those work... and @Jeff, removing the new URI line just is exactly the same as the code in my original question!?!?!?

Steve B Over a year ago

@Tom Gullen: I replaced LoadXml method by Load method. The former waits for xml data, the later waits for a location where to find xml data

Tom Gullen Over a year ago

Ahhh got you. I'm expecting it to say 'readreadread' over and over but the page is blank... no errors though.

Steve B Over a year ago

@Tom Gullen: now I think you xpath query is not valid. Either replace it by the correct one, or take a look at the .net builtin feed reading provided by classes in System.ServiceModel.Syndication

|

Collectives™ on Stack Overflow

ASP.net load XML file from URL

1 Answer 1

8 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

8 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related