Question

Getting up to speed on MVC 3,

Having a problem with an [HttpPost] ActionResult method seeing passed data, depending on whether I use EditorFor() or TextBoxFor() in my view.

I have some fields in my Edit View that I want to be read-only so I have used:

<div class="editor-field">
    @Html.EditorFor(model => model.ModelNumber)
    @*Html.TextBoxFor(model => model.ModelNumber, new { disabled = "disabled", @readonly =      "readonly" })*@
    @*Html.ValidationMessageFor(model => model.ModelNumber)*@
    </div> 

Here is the ActionResult controller methods:

 public ActionResult Edit(int id)
    {
        var NPSProc = db.NPSProcesseds.SingleOrDefault(p => p.Id == id);
        return View(NPSProc);
    }

    [HttpPost]
    public ActionResult Edit(NPSProcessed Processed)
    {
        try
        {

            if (ModelState.IsValid)
            {
                db.Entry(Processed).State = EntityState.Modified;
                db.SaveChanges();
                return new RedirectResult("~/Home", false);
            }
            else
            {
                return View("Edit", Processed);
            }
        }
        catch (DbEntityValidationException dbEx)
        {
            foreach (var validationErrors in dbEx.EntityValidationErrors)
            {
                foreach (var validationError in validationErrors.ValidationErrors)
                {
                    Trace.TraceInformation("Property: {0} Error: {1}", validationError.PropertyName, validationError.ErrorMessage);
                }
            }

            return View("Edit", Processed);
        }

When I remove the comments on the EditorFor() method, the ModelNumber field contains a value ModelNumber in the Processed object passed to the HttpPost ActionResult Method.

If I comment the EditorFor() method and remove the comment on the TextBoxFor() method
the MethodNumber field contains a null.

It appears that EditorFor() Method is performing some additional work that TextBoxFor() method is not doing.

Could someone point me in the correct direction and point out the error that I am making.

Thanks

Joe

Answer 1

Disabled <input> elements aren’t posted back to the server.

Because you set disabled="disabled" in the TextBoxFor, the browser never sends that value back.