ASP.NET MVC How to convert ModelState errors to json

Question

How do you get a list of all ModelState error messages? I found this code to get all the keys: ( Returning a list of keys with ModelState errors)

var errorK         


        

Answer 1

Variation with return type instead of returning IEnumerable

public static class ModelStateHelper
{
    public static IEnumerable> Errors(this ModelStateDictionary modelState)
    {
        if (!modelState.IsValid)
        {
            return modelState
                .ToDictionary(kvp => kvp.Key, kvp => kvp.Value.Errors.Select(e => e.ErrorMessage).ToArray())
                .Where(m => m.Value.Any());
        }

        return null;
    }
}