The root element is missing

[Samem N via DotNetMonster.com]

Does anyone know how to solve this error? I dont know where it went wrong.
Any help would be appreciated .Thanks

ERROR
______

Description: An unhandled exception occurred during the execution of the
current web request. Please review the stack trace for more information about
the error and where it originated in the code.

Exception Details: System.Xml.XmlE xception: The root element is missing.

Source Error:
Line 81: // Load the xml file
Line 82: XmlDocument xmldoc = new XmlDocument();
Line 83: xmldoc.Load( Server.MapPath( "guestbook.xml" ));
Line 84:
Line 85: //Create a new guest element and add it to the root node
Source File: e:\year 3\rhythm\rhythm _fyp\postcommen ts.aspx.cs Line: 83

Stack Trace:
[XmlException: The root element is missing.]
System.Xml.XmlT extReader.Read( ) +876
System.Xml.XmlV alidatingReader .ReadWithCollec tTextToken()
System.Xml.XmlV alidatingReader .Read()
System.Xml.XmlL oader.Load(XmlD ocument doc, XmlReader reader, Boolean
preserveWhitesp ace) +80
System.Xml.XmlD ocument.Load(Xm lReader reader) +72
System.Xml.XmlD ocument.Load(St ring filename)
Rhythm_Fyp.Post Comments.SaveXM LData() in e:\year 3\rhythm\rhythm _fyp\
postcomments.as px.cs:83
Rhythm_Fyp.Post Comments.btnPos t_Click(Object sender, EventArgs e) in e:\
year 3\rhythm\rhythm _fyp\postcommen ts.aspx.cs:71
System.Web.UI.W ebControls.Butt on.OnClick(Even tArgs e)
System.Web.UI.W ebControls.Butt on.System.Web.U I.IPostBackEven tHandler.
RaisePostBackEv ent(String eventArgument)
System.Web.UI.P age.RaisePostBa ckEvent(IPostBa ckEventHandler sourceControl,
String eventArgument)
System.Web.UI.P age.RaisePostBa ckEvent(NameVal ueCollection postData)
System.Web.UI.P age.ProcessRequ estMain()

[Pascal Schmitt]

Hello!

Exception Details: System.Xml.XmlE xception: The root element is missing.

XmlDocument xmldoc = new XmlDocument();
xmldoc.Load( Server.MapPath( "guestbook.xml" ));

Well, it seems your guestbook.xml is invalid - maybe you could post it
here? Change the code to this:

XmlDocument xmldoc = new XmlDocument();
string filename = Server.MapPath( "guestbook.xml" );
Trace.Write( filename );
xmldoc.Load( filename );

Does the file really exist? Does it contain any elements? Did you create
it by concatting multiple XML-Files?
--
Pascal Schmitt

[Samem N via DotNetMonster.com]

Again, its says " The root element is missing"

I took this code from the net, but it doesnt seem to work for me. The XML
file has not been created and no elements are inside.

How do u think i can solve this?

Here's the original code
--------------------------------

01: using System;
02: using System.Web;
03: using System.Web.UI;
04: using System.Web.UI.W ebControls;
05: using System.Xml;
06: public class Guestbook : Page
07: {
08: // Create the required webcontrols with the same name as in the
guestbook.aspx 09: //file.
10: public TextBox name;
11: public TextBox location;
12: public TextBox email;
13: public TextBox website;
14: public TextBox comment;
15: public void Save_Comment(ob ject sender, EventArgs e)
16: {
17: // Everything is all right, so let us save the data into the XML file
18: SaveXMLData();
19: // Remove the values of the textboxes
20: name.Text="";
21: location.Text=" ";
22: website.Text="" ;
23: email.Text="";
24: comment.Text="" ;
25: }
26: }
27: private void SaveXMLData()
28: {
29: // Load the xml file
30: XmlDocument xmldoc = new XmlDocument();
31: xmldoc.Load( Server.MapPath( "guestbook.xml" ) );
32: //Create a new guest element and add it to the root node
33: XmlElement parentNode = xmldoc.CreateEl ement("guest");
34: xmldoc.Document Element.Prepend Child(parentNod e);
35: // Create the required nodes
36: XmlElement nameNode = xmldoc.CreateEl ement("name");
37: XmlElement locationNode = xmldoc.CreateEl ement("location ");
38: XmlElement emailNode = xmldoc.CreateEl ement("email");
39: XmlElement websiteNode = xmldoc.CreateEl ement("website" );
40: XmlElement commentNode = xmldoc.CreateEl ement("comment" );
41: // retrieve the text
42: XmlText nameText = xmldoc.CreateTe xtNode(name.Tex t);
43: XmlText locationText = xmldoc.CreateTe xtNode(location .Text);
44: XmlText emailText = xmldoc.CreateTe xtNode(email.Te xt);
45: XmlText websiteText = xmldoc.CreateTe xtNode(website. Text);
46: XmlText commentText = xmldoc.CreateTe xtNode(comment. Text);
47: // append the nodes to the parentNode without the value
48: parentNode.Appe ndChild(nameNod e);
49: parentNode.Appe ndChild(locatio nNode);
50: parentNode.Appe ndChild(emailNo de);
51: parentNode.Appe ndChild(website Node);
52: parentNode.Appe ndChild(comment Node);
53: // save the value of the fields into the nodes
54: nameNode.Append Child(nameText) ;
55: locationNode.Ap pendChild(locat ionText);
56: emailNode.Appen dChild(emailTex t);
57: websiteNode.App endChild(websit eText);
58: commentNode.App endChild(commen tText);
59: // Save to the XML file
60: xmldoc.Save( Server.MapPath( "guestbook.xml" ) );
61: // Display the user the signed guestbook
62: Response.Redire ct("viewguestbo ok.aspx");
63: }
64: }
Source :
http://www.devarticles.com/c/a/ASP.N...-In-ASP.NET/1/

--
Message posted via http://www.dotnetmonster.com

[Pascal Schmitt]

Hello!

Again, its says " The root element is missing"

I took this code from the net, but it doesnt seem to work for me. The XML
file has not been created and no elements are inside.

How do u think i can solve this?

You have to create the guestbook.xml file yourself, I think this should
work:

<?xml version="1.0" ?>
<guestbook>
</guestbook>
--
Pascal Schmitt