XML Syntax editor display expandable / collapsible nodes

Hi Himanshu,

Our XML language in the Web Languages Add-on does support code outlining.  In your code sample above, you're using the Language property, which is a cultural language inherited from a base WPF class.  That's not what you want to set here.

Please see our "WebAddonXmlGettingStarted" QuickStart in the SyntaxEditor section of the Sample Browser.  That shows a basic example of the advanced XML syntax language in use.  Also read through the Getting Started documentation topic since there are a couple things to do in app startup to support worker thread-based parsing.  That topic walks you through everything.