Question

XML Error

Asked by: mattfairw

I'm trying to populate a table with an XML file however i keep getting the error:

System.Xml.XmlException: The data at the root level is invalid. Line 1, position 1

I've done some googling but didn't find much out on the cause. A lot of people pointed to making sure the folder has anonymous access (which it does), so i'm not sure what else to try. I'll post a bit of code for your viewing pleasure. (keep in mind this is my first work with xml, so the easiest solution, may in fact be the correct one)

===========
news.xml
===========
<?xml version="1.0" encoding="utf-8" ?>
<news>
      <article>
            <title>My First XML News!</title>
            <link>http://localhost/NewCatSite/news/7-8-2005</link>
            <description>An in-depth article about the perils of XML</description>
            <summaryImageTitle>Article Image</summaryImageTitle>
            <summaryImageURL>http://localhost/NewCatSite/images/news/mini/tester.jpg</summaryImageURL>
            <pubDate>Mon 11 Jul 2005 9:45:00 EST</pubDate>
      </article>
</news>

******************************************************************

===============
SamplePage.aspx.vb (Sub_Load method only)
===============
    Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        If Not Page.IsPostBack Then

            Dim reader As New XmlTextReader(New StringReader("http://localhost/NewSite/NewsArticles/news.xml"))
            Dim sb As New StringBuilder()
            Dim localName As String
            Dim title As String
            Dim link As String
            Dim description As String
            Dim sumImgTitle As String
            Dim sumImgURL As String
            Dim pubDate As String
            Dim data As String

            reader.WhitespaceHandling = WhitespaceHandling.None
            reader.Read() '<<<<>>>>************* This is the line the errors occurs on

            While Not reader.LocalName.Equals("News")
                reader.Read()
                While Not reader.LocalName.Equals("item")
                    localName = reader.LocalName
                    reader.Read()
                    data = reader.ReadString

                    If localName.Equals("title") Then
                        title = data
                    ElseIf localName.Equals("link") Then
                        link = data
                    ElseIf localName.Equals("description") Then
                        description = data
                    ElseIf localName.Equals("summaryImageTitle") Then
                        sumImgTitle = data
                    ElseIf localName.Equals("summaryImageURL") Then
                        sumImgURL = data
                    ElseIf localName.Equals("pubDate") Then
                        pubDate = data
                    End If
                End While
                reader.Read()
            End While

            reader.Close()
        End If
    End Sub

************************************************************************

The plan after getting this done was to use a stringbuilder to append all the data, and add it to a literal control inside SamplePage.aspx.  Any ideas on how to get this stuff read in without getting this error?

Thanks
-Matt

This Question has been solved and asker verified All Experts Exchange premium technology solutions are available to subscription members.

Subscribe now for full access to Experts Exchange and get

Instant Access to this Solution

  • Plus...
  • 30 Day FREE access, no risk, no obligation
  • Collaborate with the world's top tech experts
  • Unlimited access to our exclusive solution database
  • Never be left without tech help again

Subscribe Now

Asked On
2005-07-11 at 09:29:31ID21487319
Tags

data

,

level

,

root

Topic

Programming for ASP.NET

Participating Experts
3
Points
500
Comments
8

Trusted by hundreds of thousands everyday for fast, accurate and reliable tech support.

  • "The time we save is the biggest benefit of Experts Exchange to Warner Bros. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange." Mike Kapnisakis, Warner Bros.
  • "Our team likes having a resource that is more secure than just using Google and most experts using this service really know their stuff. It's nice to look here first versus using Google." Dayna Sellner, Lockheed Martin
  • "Anytime that I've been stumped with a problem, 9 out of 10 times Experts Exchange has either the accepted solution or an open discussion of the potential solution to the problem." Kenny Red, eBay Inc.

See what Experts Exchange can do for you.

Got a question?

We've got the answer.

Experts Exchange has been collecting answers to technology questions since 1996…3 million and counting! If you have a question, chances are we already have your answer.

Screenshot of Experts Exchange Knowledgebase

Need individual assistance?

Our experts are ready to help.

If you can't find the exact answer you're looking for, ask our exclusive community of 50,000 experts. You’ll get a personalized answer from a trusted professional.

Screenshot of Experts Exchange Knowledgebase

Want to learn from the best?

Read articles from industry experts.

Thousands of free tech tips, tricks, how-to’s and tutorials are available in our peer reviewed articles section. See for yourself how smart our experts are, no login required.

Screenshot of an Article

Working on a long term project?

Store your work and research.

Save solutions to your questions, answers you’ve discovered through searching plus helpful articles in your personal knowledgebase for easy future access.

Screenshot of Experts Exchange Knowledgebase

Access the answers to your technology questions today.

Subscribe Now

30-day free trial. Register in 60 seconds.

What Makes Experts Exchange Unique?

Members of the expert community talk about why the experience at Experts Exchange is different than what you will find anywhere else.

Trusted by the world's most respected brands.

image of each brand's logo

Faithfully serving IT professionals since 1996.

Experts Exchange Logo

Try it out and discover for yourself.

Subscribe Now

30-day free trial. Register in 60 seconds.

Related Solutions

  1. UTF-8 UNICODE XML XmlTextWriter
    We have a UTF-8 Oracle 9i database When we run a query using ADO.NET and write to an XML document, we then, get a lot of question marks for the data that is Unicode. We have tested each of the following methods: Dim oWriter As XmlTextWriter oWriter = New XmlTextWriter(&qu...
  2. Java XML Parse error using UTF-8
    Hi, I have a java porgram that read an XML document from a url. here is an excerp from the XML: <?xml version="1.0" encoding="UTF-8"?> <items > <item font-face="Arial" font-size="30" font-color="16777215"...
  3. UTf-8
    I am trying to generate a word doc from an xml file but i keep getting an error message "Illegal character or entity reference syntax". What are the invalid UTf-8 characters

Free Tech Articles

  1. WARNING: 5 Reasons why you should NEVER fix a computer for free.
    It is in our nature to love the puzzle. We are obsessed. The lot of us. We love puzzles. We love the challenge. We thrive on finding the answer. We hate disarray. It bothers us deep in our soul. W...
  2. SCCM OSD Basic troubleshooting
    SCCM 2007 OSD is a fantastic way to deploy operating systems, however, like most things SCCM issues can sometimes be difficult to resolve due to the sheer volume of logs to sift through and the dispe...
  3. Migrate Small Business Server 2003 to Exchange 2010 and Windows 2008 R2
    This guide is intended to provide step by step instructions on how to migrate from Small Business Server 2003 to Windows 2008 R2 with Exchange 2010. For this migration to work you will need the fo...
  4. Create a Win7 Gadget
    This article shows you how to create a simple "Gadget" -- a sort of mini-application supported by Windows 7 and Vista. Gadgets can be dropped anywhere on the desktop to provide instant information, ...
  5. Outlook continually prompting for username and password
    There have been a lot of questions recently regarding Outlook prompting for a username and password whilst using Exchange 2007. There are a few reasons why this would happen and I will try to cover t...
  6. Backup Exchange 2010 Information Store using Windows Backup
    There seems to be quite a lot of confusion around the ability to backup Exchange 2010 using the built in Windows Backup feature. This stems from the omission of this feature prior to Exchange 2007 s...

Cloud Class Webinars

  1. Avoiding Bugs in Microsoft Access
    Alison Balter takes and in-depth look at avoiding bugs in Access. In this webinar you will learn about using the immediate window to debug your applications, invoking the debugger, using breakpoints to troubleshoot, stepping through code, setting the next statement to execute, ...
  2. Top 10 Best New Features in Visio 2010
    Scott Helmers gives live demonstrations of the top 10 new features in Visio 2010. This webinar will teach you how to create compelling diagrams by adding shapes to the page with a single click, linking the shapes in a diagram to data in Excel (or SQL Server, or SharePoint), ...
  3. IT Consultant Business Secrets Revealed
    Michael Munger, Experts Exchange tech pro and IT consultant, pulls back the curtain on his very successful businesses and answers question on every IT consultant and business owner should know about. He shares secrets on what he did to solve the 5 most common problems in IT, ...
  4. Disaster Recovery and Business Continuity
    Quest CTO, Mike Billon, gives an overview of the steps involved in building a dunamic disaster recovery plan. Through case studies and an examination of software/hardware tooles for monitoring and testing, you'll gain a better understandin of where you are, where you want ...
  5. Organize Your Visio Diagrams with Containers and Lists
    Scott Helmers uses cross functional flowcharts, wireframe diagrams, data graphic legends and seating charts to teach you: how to ustilize all three new structured diagram components in Visio 2010, the best practices for organizeing shapes in previous version of Visio, how to organize ...
  6. How to Us Objects, Properties, Events and Methods in Microsoft Access
    Alison Dalter gives an in-depbth look at objects, properties, events and methods in Microsoft Access. In this webinar you will learn about using the object browser, referring to objects, working with properties and methods, working with object variables, understanding the ...

Join the Community

Give a Little. Get a Lot.

Join the community of experts here and help other tech pros by answering question in your area of expertise. You can earn FREE access to all Experts Exchange's premium features and resources.

Join the Community

Answers

 

by: Tim_HeldbergPosted on 2005-07-11 at 10:24:00ID: 14414261

 

by: mattfairwPosted on 2005-07-11 at 10:39:41ID: 14414398

not sure what i'm suppose to gather from that. i appreciate the response, but i'm not looking for a basic tutorial.

 

by: mattfairwPosted on 2005-07-11 at 11:01:54ID: 14414610

well i'm not sure what caused the error in the first place....but when i clsoed out of VS, then went back in...it runs fine now, and i haven't changed anything. But if anyone can give me a good interpretation of the error and what to do if it comes up again i'll still give the points. thank you.

 

by: TheLearnedOnePosted on 2005-07-11 at 11:53:30ID: 14415042

Do you want all the text of the XML or just the values from each element?

Bob

 

by: NetSlutPosted on 2005-07-11 at 12:08:32ID: 14415184

you know there is a DataSet.ReadXml() method , right ?

 

by: mattfairwPosted on 2005-07-12 at 07:02:08ID: 14421455

Bob - I would like the values.

NetSlut - Yeah, i know about the dataset, but i'm not sure how easy it would be to use in my situaion. i have a layout i want the data to conform to, and not all of the information will always be in the xml file. Is there a huge performance gain of populating a dataset and spitting things back out in a <%# Container.DataItem...... %> tag? or would just building a string (using stringbuilder of course) and writing it to a literal be fine since there will always be less than 5 items read from the xml file.

As far as the error goes (and the original aim of the post), I changed one line that has seemed to fix my error permanently:

Dim reader As New XmlTextReader(New StringReader("http://localhost/NewSite/NewsArticles/news.xml"))

to:

Dim reader As New XmlTextReader("http://localhost/NewSite/NewsArticles/news.xml")

 

by: mattfairwPosted on 2005-07-26 at 12:05:43ID: 14530455

well its been well over a week and no one is responding so i assume you either don't know or have forgotten about this. But since the i solved the original question and it is only the sub question that went unanswered, i will just split the points. If you have any commments and would like to leave them i'll still monitor this. Thanks

 

by: NetSlutPosted on 2005-07-27 at 02:33:27ID: 14534895

i don't think you will notice the performance difference between DataSet.ReadXml() and XMLReader ... unless you have thousands of rows ...

you could try it yourself by tracing , and looking at the time taken for each method ..

I think the biggest difference is that XML objects (XMLReader, etc) give you more precise control over what you want to do ...
If DataSet.ReadXml() isn't enough, use XMLReader, otherwise, don't ... :-)

20120131-EE-VQP-002

3 Ways to Join

30-Day Free Trial

The Experts

98% positive feedback on 31,087 answers since March 2000. angeliii is a Microsoft Most Valuable Professional for his work with MS SQL Server & Develoment.

He has also proven his knowledge of Visual Basic Programming, PHP Scripting and Oracle Databases.

The Experts

97% positive feedback on 10,752 answers since July 2000. lrmoore has more than 18 years experience in the networking industry.

The six-time Mircosoft MVPs specialties include firewalls, virtual private networking, and network management.

Testimonials

"...and excellent source for support... Kind of like having your very own IT dept." Electriciansnet

Testimonials

"I was apprehensive at signing up at first. However... it has already made my life as an IT administrator much easier." JaCrews

Testimonials

"WOW! You guys have great, active, and knowledgeable people on here." moore50

Business Clients

Business Clients

In the Press

"If you’ve got a question... Experts Exchange can supply an answer.”

In the Press

"...an invaluable aid for both IT professionals and those who require tech support."

In the Press

"where IT professionals provide quick answers on just about any topic"

Business Account Plans

Loading Advertisement...