Model State

ModelState.cs

        public ActionResult Index(Model model)
        {
            if (ModelState.IsValid)
            {
                // do stuff here
            }
            else
            {
                foreach (ModelState modelState in ViewData.ModelState.Values)
                {
                    foreach (ModelError error in modelState.Errors)
                    {
                          Debug.WriteLine(error.ErrorMessage);
                          Debug.WriteLine(modelState.Value.AttemptedValue);
                    }
                    if (modelState.Errors.Count > 0)
                    {
                        
                    }
                }
            }

            return View(model);
        }