I was unable to repro your issue in my end.

Could you please provide us with a simple sample that replicates the issue? You may use Northwind database as the datasource of the treeview.

Hi Yudi,

 Another crash very often thrown is:

'<', hexadecimal value 0x3C, is an invalid attribute character. Line 1, position 108.

It is very easy to reproduce - don't use SQLDataSource; fetch the data from DB and bind to the TreeView within PagePostback section on Page_Load.

Making a post-back should fire the event but it returns error.

The error is so prominent that we're planning to convert all TreeViews and TreeView inside WebCombos to Telerik Controls entirely.

Can you provide a quick fix on this please?

Regards,

Veenu Munjal

Added the Stack Trace:

[XmlException: '<', hexadecimal value 0x3C, is an invalid attribute character. Line 1, position 108.]
   System.Xml.XmlTextReaderImpl.Throw(Exception e) +76
   System.Xml.XmlTextReaderImpl.Throw(String res, String[] args) +88
   System.Xml.XmlTextReaderImpl.Throw(Int32 pos, String res, String[] args) +18
   System.Xml.XmlTextReaderImpl.ParseAttributeValueSlow(Int32 curPos, Char quoteChar, NodeData attr) +3931930
   System.Xml.XmlTextReaderImpl.ParseAttributes() +903
   System.Xml.XmlTextReaderImpl.ParseElement() +343
   System.Xml.XmlTextReaderImpl.ParseElementContent() +121
   System.Xml.XmlTextReaderImpl.Read() +45
   System.Xml.XmlLoader.LoadNode(Boolean skipOverWhitespace) +58
   System.Xml.XmlLoader.LoadDocSequence(XmlDocument parentDoc) +20
   System.Xml.XmlLoader.Load(XmlDocument doc, XmlReader reader, Boolean preserveWhitespace) +129
   System.Xml.XmlDocument.Load(XmlReader reader) +108
   System.Xml.XmlDocument.LoadXml(String xml) +113
   ISNet.WebUI.XmlCompressor.XmlCompressor.Compress(XmlDocument xml) +250
   ISNet.WebUI.ISNetControl.GetXMLData() +66
   ISNet.WebUI.WebTreeView.WebTreeView.GetXMLData() +107
   ISNet.WebUI.ISNetControl(Object, EventArgs ) +438
   System.EventHandler.Invoke(Object sender, EventArgs e) +0
   System.Web.UI.Control.OnPreRender(EventArgs e) +8682870
   System.Web.UI.Control.PreRenderRecursiveInternal() +80
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +842

The error only happens when “XmlCompressionEnabled” property is set to true. A work item, #497, has been submitted to WebTreeView development team regarding this issue.

I’ll keep you updated with any news I heard from the team regarding this issue.