Question

I’m having a strange issue with RedirectToAction in MVC 3.0.

Here is the code of my sample ViewModel

public class EventViewModel
{
  [Required(ErrorMessageResourceType = typeof(Resources.Validations), ErrorMessageResourceName = "Required")]
  public DateTime CreationDate { get; set; }

  [Required(ErrorMessageResourceType = typeof(Resources.Validations), ErrorMessageResourceName = "Required")]
  [AllowHtml] //here is my apparent problem
  public string Description { get; set; }

  [Required(ErrorMessageResourceType = typeof(Resources.Validations), ErrorMessageResourceName = "Required")]
  [Range(0, 5, ErrorMessageResourceType = typeof(Resources.Validations), ErrorMessageResourceName = "RangeValue")]
  public int Rating { get; set; }
  [Required(ErrorMessageResourceType = typeof(Resources.Validations), ErrorMessageResourceName = "Required")]
  public string Title{ get; set; }

  ...other properties...

}

Here is the two methods of my controller

public ActionResult Edit(int id)
{
  var entity = eventsRepository.Get(id);
  if (entity == null)
    return RedirectToAction("Index");
  var eventVM = new EventViewModel();
  eventVM.Description = entity.Description;

  ... set the other properties ...

  return View(eventVM);
}

[HttpPost]
public ActionResult Edit(int id, EventViewModel model)
{
  if (ModelState.IsValid)
  {
    try
    {
      var entity = eventsRepository.Get(id);
      if (entity == null)
        return RedirectToAction("Index");
      entity.CreationDate = model.CreationDate;
      entity.Description = model.Description;

      ... set the other properties ...

      eventsRepository.Save(entity);
      return RedirectToAction("Index");
    }
    catch (Exception e)
    {
      ModelState.AddModelError("", "An error occured bla bla bla");
    }
  }

  return View(model);
}

My problem is, if I remove the AllowHtmlAttribute and insert plain text in the description field, all is ok and I get my redirect after save, but if I put the AllowHtmlAttribute on the field description and insert some Html text, after save instead of the redirect I get a blank page with only this text:

Object moved to here. 

If I click on “here”, I’m redirected to the right url.

Am I missing something obvious?

Answer 1

Its actually cause by a httpModule interfering with mvc. I had same issue and fixed it by removing the following from the main web.config.

<add type="DevExpress.Web.ASPxClasses.ASPxHttpHandlerModule, DevExpress.Web.v11.1, Version=11.1.10.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" name="ASPxHttpHandlerModule" />