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  • Hefin Jones 39 posts 161 karma points
    Mar 01, 2013 @ 13:01
    Hefin Jones

    6.0.1 - Loop through Multi-Node Tree Picker


    I've just upgraded my Umbraco instance from 6.0.0 to 6.0.1 and notice that some of my Razor scripts are not working anymore.  This piece of code, which worked fine prior to the upgrade, now doesn't work:

    @inherits umbraco.MacroEngines.DynamicNodeContext
    @using umbraco.MacroEngines;
    @using uComponents.DataTypes.UrlPicker.Dto;
    @using umbraco.NodeFactory;
            if (Model.HasValue("homepageFeaturesToDisplay"))
                    <ul id="homePageFeatures">
                            @foreach (var features in Model.homepageFeaturesToDisplay) {
                                    // do stuff here

    It fails with the following error:

    Error Loading Razor Script (file: Show Home Page Features) Cannot implicitly convert type 'umbraco.MacroEngines.PropertyResult' to 'System.Collections.IEnumerable'. An explicit conversion exists (are you missing a cast?)    at CallSite.Target(Closure , CallSite , Object )
      at System.Dynamic.UpdateDelegates.UpdateAndExecute1[T0,TRet](CallSite site, T0 arg0)
      at ASP._Page_macroScripts_ShowHomePageFeatures_cshtml.Execute() in c:\Users\HeJJones\documents\web team\websites\umbraco_websites\st catherines walk\umbraco_stcatherineswalk\macroScripts\ShowHomePageFeatures.cshtml:line 10
      at System.Web.WebPages.WebPageBase.ExecutePageHierarchy()
      at System.Web.WebPages.WebPage.ExecutePageHierarchy()
      at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)
      at umbraco.MacroEngines.RazorMacroEngine.ExecuteRazor(MacroModel macro, INode currentPage)
      at umbraco.MacroEngines.RazorMacroEngine.Execute(MacroModel macro, INode currentPage)

    Has anything changed in the upgrade that would cause this?  One thing I have noticed (i think) is that "Model.homepageFeaturesToDisplay" is returning a String value and not umbraco.MacroEngines.DynamicXml as seemed to be the case in v6.0.0.  I have looked at this documentation, and my code seems to follow the process I should be coding but it's not working since the upgrade.

    Is this a bug in 6.0.1 or is there an new way I should be coding this functionality?  What is the "correct" way of coding it?

    Thanks in advance .... Hefin

  • Mike Chambers 635 posts 1252 karma points c-trib
    Mar 04, 2013 @ 11:26
    Mike Chambers

    same for me in 4.11.5 update...

  • Martin Griffiths 826 posts 1269 karma points c-trib
    Mar 04, 2013 @ 12:26
    Martin Griffiths

    Hi Hefin

    I've had the same problem too going from 4.11.4 to 4.11.5.

    I had to change my code to Model.GetProperty("modules").Value which returned uComponents multinodetree property XML (as a string). Then I dumped it into an XMLDocument and iterated through it. This came as a bit of a surprise and I suppose it's one of pitfalls of an API that has yet to solidify.

    An example below for you....

     string nodes = Model.GetProperty("modules").Value;
        if (nodes != string.Empty)
            XmlDocument xd = new XmlDocument();
            foreach (XmlElement value in xd.SelectNodes("/MultiNodePicker/nodeId"))
            { ...
  • Hefin Jones 39 posts 161 karma points
    Mar 05, 2013 @ 16:47
    Hefin Jones

    Thanks for your help guys, managed to download and apply v6.0.3 as discussed here which resolved my issues without changing any of my original code ... RESULT!!

  • Martin Griffiths 826 posts 1269 karma points c-trib
    Mar 05, 2013 @ 17:18
    Martin Griffiths

    Hi Hefin

    Yep turned out to be a bug, so I download umbraco.MacroEngines.dll for 4.11.6 and replaced the buggy one and I could revert back to my original code...what a pain! lol.


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