Loading XML Format Issue

[Avidan]

Hi,

I have a server ajax control which inherits RadToolBar control, with OnInit event I popolate items from XML file (the file was taken from the Demo website, so I assume it's format is correct) 

Imports System
Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Text
Imports System.Web
Imports System.Web.UI
Imports System.Web.UI.WebControls
Imports Telerik.Web.UI



Public Class GridCommandItem
    Inherits RadToolBar
    Protected Overrides Sub OnInit(ByVal e As System.EventArgs)
        MyBase.OnInit(e)
        Me.LoadContentFile("ToolBar.xml")
    End Sub

End Class

When I place the server control on page and run the application I got the following error:

Server Error in '/' Application.
--------------------------------------------------------------------------------

<ToolBar xmlns=''> was not expected.
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.InvalidOperationException: <ToolBar xmlns=''> was not expected.

Source Error:


Line 14:     Protected Overrides Sub OnInit(ByVal e As System.EventArgs)
Line 15:         MyBase.OnInit(e)
Line 16:         Me.LoadContentFile("ToolBar.xml")
Line 17:     End Sub
Line 18:


Source File: D:\Profiles\bah029\My Documents\Visual Studio 2008\Projects\CommonServerControls\GridCommandItem.vb    Line: 16

Stack Trace:


[InvalidOperationException: <ToolBar xmlns=''> was not expected.]
   Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderGridCommandItem.Read1_GridCommandItem() +259

[InvalidOperationException: There is an error in XML document (2, 2).]
   System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events) +613
   System.Xml.Serialization.XmlSerializer.Deserialize(TextReader textReader) +102
   Telerik.Web.UI.ControlItemContainer.LoadXml(String xml) +113
   Telerik.Web.UI.RadToolBar.LoadContentFile(String xmlFileName) +99
   CommonServerControls.GridCommandItem.OnInit(EventArgs e) in D:\Profiles\bah029\My Documents\Visual Studio 2008\Projects\CommonServerControls\GridCommandItem.vb:16
   System.Web.UI.Control.InitRecursive(Control namingContainer) +333
   System.Web.UI.Control.InitRecursive(Control namingContainer) +210
   System.Web.UI.Control.InitRecursive(Control namingContainer) +210
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +378

any idea how to solve it?

Avidan

[Cori]

Hello Avi,

What does this ToolBar.xml file look like? Does it have <ToolBar xmlns=''>, like the error message states? If so, the root ToolBar element should not have any attributes set.

[Simon]

Hello guys,

The exception is thrown because the XmlSerializer by default expects the root element of the XML document being loaded to match the type name of the class to which it deserializes the document. In your case, this is the name of your custom class - GridCommandItem.

So you can either rename the root element of the content XML document to GridCommandItem or set the XmlRootAttribute to your class to designate the expected name of the root node of the content XML document, e.g.

<XmlRoot("ToolBar")> _
Public Class GridCommandItem
    Inherits RadToolBar

End Class

I hope this helps.

Regards,
Simon
the Telerik team