ASP.Net MVC 3 JSON Model Binding and server side model validation mixed with client side validation

Question

I\'ve been playing with the new MVC3 Json Model Binding and it\'s quite nice.

Currently, I can post JSON to controller and bind it. Model Validation occurs nicely too.

Answer 1

Thanks for this solution. I improved on it a bit by passing a dictionary so that you can use the unobtrusive javascript to put the validation on the individual fields instead of a summary by referencing the key of the dictionary.

    private Dictionary GetModelStateErrorsAsString(ModelStateDictionary state)
    {
        Dictionary errors = new Dictionary();
        foreach (var key in ModelState.Keys)
        {
            var error = ModelState[key].Errors.FirstOrDefault();
            if (error != null)
            {
                errors.Add(key, error.ErrorMessage);
            }
        }
        return errors;
    }