Question

I have made e installation with Umbraco version 5 and I am making a form with Surface Controller. I added the form in a view like that:

@inherits RenderViewPage
@using System.Web.Mvc.Html;
@using Umbraco.Cms.Web;
@using Umbraco.Cms.Web.Editors;
@{
    Layout = "Page.cshtml";
}

<section>
  @using (Html.BeginUmbracoForm("SendContactInfo", "ContactSurface"))
  {

      var contactForm = new ContactModel();


    @Html.ValidationSummary(prefix: "contactForm")

    @Html.EditorFor(x => contactForm)


    <input type="submit"  value="Send" />
  }
</section>

and Controller:

public class ContactSurfaceController:SurfaceController
{
    [HttpPost]
    public ActionResult SendContactInfo(
        [Bind(Prefix = "contactForm")]
            ContactModel model)
    {
        if (!ModelState.IsValid)
        {
            return CurrentUmbracoPage();
        }


        return new JsonResult() { Data = new { Name = "Sucess!"} };
    }
}

And Model:

public class ContactModel
{
    public string FirstName { get; set; }

    public string LastName { get; set; }

    [Required]
    public string Email { get; set; }

    public string Message { get; set; }
}

And I get a Null reference exception at @Html.EditorFor(x => contactForm). This is the stack trance:

[NullReferenceException: Object reference not set to an instance of an object.]


Umbraco.Framework.Localization.Web.Mvc.LocalizingModelMetadataProvider.GetConventionKeyNames(Type containerType, String propertyName, Boolean testSimplePropertyName) +285
   Umbraco.Framework.Localization.Web.Mvc.LocalizingModelMetadataProvider.CreateMetadata(IEnumerable`1 attributes, Type containerType, Func`1 modelAccessor, Type modelType, String propertyName) +597
   Umbraco.Cms.Web.Mvc.Metadata.UmbracoModelMetadataProvider.CreateMetadata(IEnumerable`1 attributes, Type containerType, Func`1 modelAccessor, Type modelType, String propertyName) +62
   System.Web.Mvc.AssociatedMetadataProvider.GetMetadataForProperty(Func`1 modelAccessor, Type containerType, PropertyDescriptor propertyDescriptor) +93
   System.Web.Mvc.<GetMetadataForPropertiesImpl>d__2.MoveNext() +226
   System.Linq.Buffer`1..ctor(IEnumerable`1 source) +217
   System.Linq.<GetEnumerator>d__0.MoveNext() +96
   System.Linq.WhereEnumerableIterator`1.MoveNext() +87
   System.Web.Mvc.Html.DefaultEditorTemplates.ObjectTemplate(HtmlHelper html, TemplateHelperDelegate templateHelper) +368
   System.Web.Mvc.Html.DefaultEditorTemplates.ObjectTemplate(HtmlHelper html) +47
   System.Web.Mvc.Html.TemplateHelpers.ExecuteTemplate(HtmlHelper html, ViewDataDictionary viewData, String templateName, DataBoundControlMode mode, GetViewNamesDelegate getViewNames, GetDefaultActionsDelegate getDefaultActions) +714
   System.Web.Mvc.Html.TemplateHelpers.TemplateHelper(HtmlHelper html, ModelMetadata metadata, String htmlFieldName, String templateName, DataBoundControlMode mode, Object additionalViewData, ExecuteTemplateDelegate executeTemplate) +1117
   System.Web.Mvc.Html.TemplateHelpers.TemplateHelper(HtmlHelper html, ModelMetadata metadata, String htmlFieldName, String templateName, DataBoundControlMode mode, Object additionalViewData) +66
   System.Web.Mvc.Html.TemplateHelpers.TemplateFor(HtmlHelper`1 html, Expression`1 expression, String templateName, String htmlFieldName, DataBoundControlMode mode, Object additionalViewData, TemplateHelperDelegate templateHelper) +117
   System.Web.Mvc.Html.TemplateHelpers.TemplateFor(HtmlHelper`1 html, Expression`1 expression, String templateName, String htmlFieldName, DataBoundControlMode mode, Object additionalViewData) +100
   System.Web.Mvc.Html.EditorExtensions.EditorFor(HtmlHelper`1 html, Expression`1 expression) +56
   ASP._Page_Views_Umbraco_contact_cshtml.Execute() in e:\3fa4128e3b304b75b56af47f1ff5219e\Umbraco5-Smallsite\Views\Umbraco\contact.cshtml:17
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +207
   System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +81
   System.Web.WebPages.StartPage.RunPage() +19
   System.Web.WebPages.StartPage.ExecutePageHierarchy() +65
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +76
   System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance) +220
   System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer) +115
   System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +303
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult) +13
   System.Web.Mvc.<>c__DisplayClass1c.<InvokeActionResultWithFilters>b__19() +23
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +260
   System.Web.Mvc.<>c__DisplayClass1e.<InvokeActionResultWithFilters>b__1b() +19
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +260
   System.Web.Mvc.<>c__DisplayClass1e.<InvokeActionResultWithFilters>b__1b() +19
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +177
   System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +343
   System.Web.Mvc.Controller.ExecuteCore() +116
   System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +97
   System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +10
   System.Web.Mvc.<>c__DisplayClassb.<BeginProcessRequest>b__5() +37
   System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +21
   System.Web.Mvc.Async.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _) +12
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +62
   System.Web.Mvc.<>c__DisplayClasse.<EndProcessRequest>b__d() +50
   System.Web.Mvc.SecurityUtil.<GetCallInAppTrustThunk>b__0(Action f) +7
   System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Action action) +22
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +60
   System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8969117
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +184

I’ve been struggling with this error for 4-5 hours, googling and trying different things. If anyone has an idea how to fix this I would be very grateful.

Update
I’ve posted the whole code of the view and the controller for more info.

Update-2
Added the model for more info.

Update-3
Finally I used the approach suggested in the two posts below. The problem I was having with the approach was that I added the SurfaceController directly in Umbraco’s website instead of making another project and referencing it in Umbraco’s website. When I created the separate project – Controller Showed Up and everything was fine. I am marking the post that let me to that thought as the right answer.

I couldn’t resolve the problem with the exception in Umbraco’s localization thought.

You can find the source code about this thread at the GitHub repository.

Answer 1

Assuming you’re posting the complete code of your view your view is not strongly typed and missing a model causing the EditorFor to throw an exception. Just add the model directive to your view and from your controller push in an object into the view:

@model Site.Extensions.ViewModel.ContactViewModel

        [ChildActionOnly]
    public PartialViewResult ContactForm()
    {
        var model = new ContactViewModel();
        return PartialView(model);
    }