Is it possible to return a SiteMap as a JsonResult?

Posted by Paul Suart on Stack Overflow See other posts from Stack Overflow or by Paul Suart
Published on 2010-03-18T09:58:50Z Indexed on 2010/05/10 5:08 UTC
Read the original article Hit count: 282

Filed under:

JSON

|

serialization

|

c#

|

asp.net-mvc

I've got a very simple Action on my Controller that's attempting to return my XmlSiteMap as a JsonResult:

public ActionResult Index()
{
    var nodes = SiteMap.Provider.RootNode;
    return new JsonResult() 
        { Data = nodes, JsonRequestBehavior = JsonRequestBehavior.AllowGet };
}

However, when I call the Action, an InvalidOperationException is thrown:

"A circular reference was detected while serializing an object of 
   type 'System.Web.SiteMapNode'."

Is there a way to Json serialize a SiteMap, or indeed any object that has children of the same type?

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