Customize the Error Message MVC for an invalid DateTime in ASP.NET MVC4

Question

I am having trouble specifying the error message for the validation of a DateTime input value using data annotations in my model. I would really like to use the proper DateT

Answer 1

I got around this issue by modifying the error in the ModelState collection at the start of my action method. Something like this:

    [HttpPost]
    [ValidateAntiForgeryToken]
    public ActionResult MyAction(MyModel model)
    {
        ModelState myFieldState = ModelState["MyField"];
        DateTime value;
        if (!DateTime.TryParse(myFieldState.Value.AttemptedValue, out value))
        {
            myFieldState.Errors.Clear();
            myFieldState.Errors.Add("My custom error message");
        }

        if (ModelState.IsValid)
        {
            // Do stuff
        }
        else
        {
            return View(model);
        }
    }