ComponentArt.Web.UI version 3.0.1545.0 I am creating a menu programatically in the code behind ... //Create new move item item = new MenuItem(); item.LookId = "CreateItem"; item.ToolTip = "Create Item"; item.Text = "Create"; item.ID = "CREATE"; _requestMenu.Items.Add(item); //delete selected move items item = new MenuItem(); item.LookId="DeleteItem"; item.ToolTip = "Delete selected items"; item.Text = "Delete"; item.ID = "DELETE"; _requestMenu.Items.Add(item); ... and have the ASP.Net code to AutoPostBackOnSelect=true ... ... However once the page renders and I click any one of the menu items I get the following exception: Exception Details: System.Xml.XmlException: '<', hexadecimal value 0x3C, is an invalid attribute character. Line 1, position 675. [XmlException: '<', hexadecimal value 0x3C, is an invalid attribute character. Line 1, position 675.] System.Xml.XmlScanner.ScanLiteral() +351 System.Xml.XmlTextReader.SetLiteralValues(XmlAttributeTokenInfo fld) +132 System.Xml.XmlTextReader.SetAttributeValues() +206 System.Xml.XmlTextReader.ParseElement() +138 System.Xml.XmlTextReader.Read() +94 System.Xml.XmlValidatingReader.ReadNoCollectTextToken() System.Xml.XmlValidatingReader.Read() System.Xml.XmlLoader.LoadChildren(XmlNode parent) +33 System.Xml.XmlLoader.LoadElementNode() +144 System.Xml.XmlLoader.LoadCurrentNode() +38 System.Xml.XmlLoader.LoadChildren(XmlNode parent) +47 System.Xml.XmlLoader.LoadElementNode() +144 System.Xml.XmlLoader.LoadCurrentNode() +38 System.Xml.XmlLoader.LoadChildren(XmlNode parent) +47 System.Xml.XmlLoader.LoadElementNode() +144 System.Xml.XmlLoader.LoadCurrentNode() +38 System.Xml.XmlLoader.LoadDocSequence(XmlDocument parentDoc) +49 System.Xml.XmlLoader.Load(XmlDocument doc, XmlReader reader, Boolean preserveWhitespace) +102 System.Xml.XmlDocument.Load(XmlReader reader) +72 System.Xml.XmlDocument.LoadXml(String xml) ComponentArt.Web.UI.GridLevelCollection.LoadXml(String sXml) ComponentArt.Web.UI.Grid.LoadViewState(Object state) System.Web.UI.Control.LoadViewStateRecursive(Object savedState) System.Web.UI.Control.LoadViewStateRecursive(Object savedState) System.Web.UI.Control.LoadViewStateRecursive(Object savedState) System.Web.UI.Control.LoadViewStateRecursive(Object savedState) System.Web.UI.Page.LoadPageViewState() System.Web.UI.Page.ProcessRequestMain() I am not sure what I am missing here and have gone over the code, documentation, and examples many time and still can't see the problem. Any help would be greatly appreciated!

It seems that an error is occurring while parsing an XML document. While I cannot say for certain what is happening exactly, I'm curious what you are doing on PostBack. How different is it from what's happening during the initial loading of the page?

If you are loading an XML document, please ensure that it is properly formatted.

The page contained a ComponentArt Grid, that apparently was causing the problem when the page was posted back. Once I removed the grid from the page the application was able to successfully post back.

The grid was based on one of the examples.

Hi! I have a similar problem when using the latest 2006.1 Beta version.

In a ContentPlaceHolder(using a Master page) page, both a grid and a menu component are contained in its own callback control. Menu items are created dynamically.

<ComponentArt:SplitterPaneContent id="Content1" >
...
<td align="right" width="200px">
<ComponentArt:Callback ID="CallbackMenu" Width="200px" runat=server>
<Content>
<ComponentArt:Menu id="Menu1"
EnableViewState="true"
AutoPostBackOnSelect="true"
runat="server">
</ComponentArt:Menu>
</Content>
</ComponentArt:Callback>
...

<ComponentArt:CallBack ID="CallbackGrid" width="100%" runat="server">
<Content>

<ComponentArt:Grid id="Grid1"
EnableViewState="true"
RunningMode="Client"
EnableTheming="true"
SkinID="GridSkin"
ClientSideOnCheckChanged="Grid1Select"
runat="server">
...

First time when the page is loaded up, the Menu1_ItemSelected event works fine.

However, after a client side java scipt triggers both the callback events above(inside the CallbackMenu_Callback event, some items got enabled or disabled based on certain conditions, and re-rendor itself)

private void CallbackMenu_Callback(object sender, ComponentArt.Web.UI.CallBackEventArgs e)
{
Menu1.FindItemById("miItem1").Enabled = true;
Menu1.FindItemById("miItem2").Enabled = false;

Menu1.RenderControl(e.Output);
}

then clicking on a menu item that previously worked, the following error shows up:

Error loading client properties: System.Xml.XmlException: Data at the root level is invalid. Line 1, position 2842.
at System.Xml.XmlTextReaderImpl.Throw(Exception e)
at System.Xml.XmlTextReaderImpl.Throw(String res, String arg)
at System.Xml.XmlTextReaderImpl.ParseRootLevelWhitespace()
at System.Xml.XmlTextReaderImpl.ParseDocumentContent()
at System.Xml.XmlTextReaderImpl.Read()
at System.Xml.XmlLoader.LoadDocSequence(XmlDocument parentDoc)
at System.Xml.XmlLoader.Load(XmlDocument doc, XmlReader reader, Boolean preserveWhitespace)
at System.Xml.XmlDocument.Load(XmlReader reader)
at System.Xml.XmlDocument.LoadXml(String xml)
at ComponentArt.Web.UI.Menu.LoadClientProperties(String sData)

Any ideas what may cause this problem? Thanks.

I had this same problem with a grid but it ended up being caused by some html (hyperlink tags) that I had set in the Header text property of a column.

I am having this problem with the tab control. I get the error "Error loading client properties" when I am dragging a webpart. Basically, I have the tab control in a web part and if I drag the web part I get this error. Is there any fix for it?

Hi,

i have the same Problem with a menu-control.
Message: Allgemeiner Fehler:Error loading client data: System.Xml.XmlException: '.', hexadecimal value 0x00, is an invalid character. Line 1, position 19515.

at System.Xml.XmlTextReaderImpl.Throw(Exception e)

at System.Xml.XmlTextReaderImpl.Throw(String res, String[] args)

at System.Xml.XmlTextReaderImpl.ThrowInvalidChar(Int32 pos, Char invChar)

at System.Xml.XmlTextReaderImpl.ParseText(Int32& startPos, Int32& endPos, Int32& outOrChars)

at System.Xml.XmlTextReaderImpl.ParseText()

at System.Xml.XmlTextReaderImpl.ParseElementContent()

at System.Xml.XmlTextReaderImpl.Read()

at System.Xml.XmlLoader.LoadNode(Boolean skipOverWhitespace)

at System.Xml.XmlLoader.LoadDocSequence(XmlDocument parentDoc)

at System.Xml.XmlLoader.Load(XmlDocument doc, XmlReader reader, Boolean preserveWhitespace)

at System.Xml.XmlDocument.Load(XmlReader reader)

at System.Xml.XmlDocument.LoadXml(String xml)

at ComponentArt.Web.UI.BaseNavigator.LoadClientData(String sData)

at ComponentArt.Web.UI.BaseNavigator.LoadClientData(String sData)

at ComponentArt.Web.UI.Menu.LoadViewState(Object savedState)

at System.Web.UI.Control.LoadViewStateRecursive(Object savedState)

at System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState)

at System.Web.UI.Control.LoadViewStateRecursive(Object savedState)

at System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState)

at System.Web.UI.Control.LoadViewStateRecursive(Object savedState)

at System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState)

at System.Web.UI.Control.LoadViewStateRecursive(Object savedState)

at System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState)

at System.Web.UI.Control.LoadViewStateRecursive(Object savedState)

at System.Web.UI.Control.LoadChildViewStateByID(ArrayList childState)

at System.Web.UI.Control.LoadViewStateRecursive(Object savedState)

at System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState)

at System.Web.UI.Control.LoadViewStateRecursive(Object savedState)

at System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState)

at System.Web.UI.Control.LoadViewStateRecursive(Object savedState)

at System.Web.UI.Page.LoadAllState()

at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)


the problem is, that i found this error message in the log on a live server and i can not say at which situation the user see this error

Thanks for help

me too.

if i don't use chinese in menu items,it will work fine.

but,it work fine at 2006.1,don't work other version(2006.2 or 2006.2 beta for ajax with the same code and menu's xml.

anybody tell me how can i do?

i have submited a online support request yesterday.

but i haven't receive office's reply.

tanks at advance.

I use the C:\Program Files\ComponentArt\Web.UI 2006.2 for ASP.NET 2.0\live_examples\Grid\features\ajax_grid

sample to recreat this problem.

Add the linkbutton to the form

<form id="Form1" method="post" runat="server">
<asp:LinkButton ID="LinkButton1" runat="server" PostBackUrl="webform1.aspx">LinkButton</asp:LinkButton>


The program works fine in IE 6.0. In IE 5.0 which comes with window 2000, you will get.

Error loading postback data: System.Xml.XmlException: Data at the root level is invalid. Line 1, position 1.
at System.Xml.XmlTextReaderImpl.Throw(Exception e)
at System.Xml.XmlTextReaderImpl.Throw(String res, String arg)
at System.Xml.XmlTextReaderImpl.ParseRootLevelWhitespace()
at System.Xml.XmlTextReaderImpl.ParseDocumentContent()
at System.Xml.XmlTextReaderImpl.Read()
at System.Xml.XmlLoader.Load(XmlDocument doc, XmlReader reader, Boolean preserveWhitespace)
at System.Xml.XmlDocument.Load(XmlReader reader)
at System.Xml.XmlDocument.LoadXml(String xml)
at ComponentArt.Web.UI.Grid.LoadClientData(String sData)


The error does not occur in 2006.1 as the button does not work at all.

We need this problem fixed as soon as possible.

Thank you

Run the sample in IE 5.0

http://localhost/ComponentArt.Web.UI.2006.2.fw2.Standard_Examples/grid/features/ajax_grid/WebForm1.aspx

click the next page button, you will get the same error.

This is some information I found. Hope this will help to fix this problem.


XmlException: The data at the root level is invalid. Line 1, position 1.
This might be a really obscure (or dumb?) ASP.NET / C# problem, but again I thought I'd post something about it in case it helps someone else searching about this issue....

I was getting an exception when loading an XML file:

Error with ... xml\nav.xml: System.Xml.XmlException:
The data at the root level is invalid. Line 1, position 1.
at System.Xml.XmlTextReader.ParseRoot()
at System.Xml.XmlTextReader.Read()
at System.Xml.XmlValidatingReader.ReadWithCollectTextToken()
at System.Xml.XmlValidatingReader.Read()
at System.Xml.XmlLoader.Load(XmlDocument doc, XmlReader reader, Boolean preserveWhitespace)
at System.Xml.XmlDocument.Load(XmlReader reader)
at System.Xml.XmlDocument.LoadXml(String xml)
Using the following code:

docXml.LoadXml(xml);Searching for others' advice / solutions for such a problem on the web didn't help very much... it kept happening no matter what I was trying.

Turned out the problem was very very simple to fix (as they sometimes are) - it was just a typo. The variable "xml" was a full file path to an xml FILE I was trying to load, and silly me, you have to use docXml.Load() to load an xml FILE, not docXml.LoadXml() - the typo must have gotten in there from a poor use of VS.NET Intellisense or something (auto-completing LoadXml instead of just Load) - doh!

Changing the code to:

docXml.Load(xml);Worked just fine (of course).

Like I mentioned, just in case this helps someone else!

I have recieved a office's reply.
he said
"This is a known issue with this release, I'm afraid, but it has been
fixed for the upcoming service release. I don't have a date for you
right now, but you might want to check late next week. "

i think we have to waiting and waiting...

hi,
I tested a similar problem when using the ASP.NET 2.0-2006.2.1477.2.
It seems XML error of everything excluding alphabet or number.

In a TabStrip , TreeView and Menu ,..etc.

It seems that the entire Xml is done HtmlDecode in LoadViewState.

yes,i have the save problem when using 2006.2.1477.2

it's work well when using 2006.1