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  • Bert Hoorne 15 posts 55 karma points
    Jun 28, 2015 @ 06:25
    Bert Hoorne
    0

    Item.GetValue("header") Value cannot be null.

    Hi,

    I created a custom header, with only 1 property, a single textstring. Every time I try to show the values, I get the error: : Value cannot be null.

    HTML:

    @inherits UmbracoViewPage<Lecoati.LeBlender.Extension.Models.LeBlenderModel>
    @foreach (var item in Model.Items)
    {
        <div class="row">
            <div class="col-sm-6 col-sm-offset-3">
                <h2 class="module-title font-alt">@item.GetValue("Header")</h2>
            </div>
        </div>
    }
    

    The stacktrace:

       at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal)
       at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info)
       at System.Int32.Parse(String s)
       at Lecoati.LeBlender.Extension.Helper.GetTargetContentType()
       at Lecoati.LeBlender.Extension.Models.LeBlenderPropertyModel.GetValue[T]()
       at Lecoati.LeBlender.Extension.Models.LeBlenderValue.GetValue[T](String propertyAlias)
       at Lecoati.LeBlender.Extension.Models.LeBlenderValue.GetValue(String propertyAlias)
       at ASP._Page_views_partials_grid_editors_ModuleTitel_cshtml.Execute() in c:\Projects\keystroke\Rovasac website\Web solution\Source\Rovasac\Views\Partials\Grid\Editors\ModuleTitel.cshtml:line 6
       at System.Web.WebPages.WebPageBase.ExecutePageHierarchy()
       at System.Web.Mvc.WebViewPage.ExecutePageHierarchy()
       at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)
       at System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance)
       at System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer)
       at Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer)
       at System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context)
       at System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult)
       at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass1a.<InvokeActionResultWithFilters>b__17()
       at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation)
    

    The backend enter image description here

    The wierd thing is, it is only on some document types, not on all of them.

    Any ideas?

    Thanks :)

  • Alex Skrypnyk 5747 posts 21807 karma points MVP 4x admin c-trib
    Jun 29, 2015 @ 22:07
    Alex Skrypnyk
    0

    Hi Bert,

    Can you use 'HasValue()' method for checking value before using it ?

    Thanks

  • Bert Hoorne 15 posts 55 karma points
    Jul 01, 2015 @ 18:04
    Bert Hoorne
    0

    Hi Alex,

    My object does not have a property HasValue, enter image description here

    Is it correct that I inherit from :

    @inherits UmbracoViewPage<Lecoati.LeBlender.Extension.Models.LeBlenderModel>
    

    Thanks!

  • Antoine 176 posts 1492 karma points
    Jul 01, 2015 @ 18:28
    Antoine
    0

    Hi Bert,

    I think that it because the alias of your property is header and not Header, the alias is camel case.

  • Bert Hoorne 15 posts 55 karma points
    Jul 01, 2015 @ 19:15
    Bert Hoorne
    0

    Hi, I tried this too, but still same issue :(

  • Antoine 176 posts 1492 karma points
    Jul 02, 2015 @ 17:33
    Antoine
    0

    Hi Bert,

    I tried it with exactly the same values but it works fine for me :/

    Have you got any more info about your issue, some error within the console? you have this error in front or back?

  • Bert Hoorne 15 posts 55 karma points
    Jul 14, 2015 @ 19:54
    Bert Hoorne
    0

    Hi,

    I downloaded the source code and found that this is null:

    string.IsNullOrEmpty(HttpContext.Current.Request["id"]
    

    located in

         internal static PublishedContentType GetTargetContentType()
    

    The possible reason is because I am using a custom controller and the Id is not set.

    In my controller I added the ID to HttpContext.Current.Items collection and wrote some extra code in Leblender Extension to retreive this id

     else if (!string.IsNullOrEmpty(HttpContext.Current.Request["id"]))
            {
                int contenId = int.Parse(HttpContext.Current.Request["id"]);
                return (PublishedContentType)ApplicationContext.Current.ApplicationCache.RuntimeCache.GetCacheItem(
                    "LeBlender_GetTargetContentType_" + contenId,
                    () =>
                    {
                        var services = ApplicationContext.Current.Services;
                        var contentType = PublishedContentType.Get(PublishedItemType.Content, services.ContentService.GetById(contenId).ContentType.Alias);
                        return contentType;
                    });
            }
            else
            {
                int contenId = int.Parse(HttpContext.Current.Items["id"].ToString());
                return (PublishedContentType)ApplicationContext.Current.ApplicationCache.RuntimeCache.GetCacheItem(
                    "LeBlender_GetTargetContentType_" + contenId,
                    () =>
                    {
                        var services = ApplicationContext.Current.Services;
                        var contentType = PublishedContentType.Get(PublishedItemType.Content, services.ContentService.GetById(contenId).ContentType.Alias);
                        return contentType;
                    });
            }
    

    Does anyone knows why this ID is null? And who sets it?

    Thanks :)

    (it works with my changes for now)

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