Mvc ModelState extensions to get error list from ModelState

ModelExtensions.cs

using System.Collections.Generic;
using System.Linq;
usingusing System.Collections.Generic;
using System.Linq;
using System.Web.Mvc;

namespace Gists.Mvc.Helpers
{
    public static class ModelExtensions
    {
        public static List<string> GetErrorList(this ModelStateDictionary modelState)
        {
            var errorList = modelState.Values
                .SelectMany(x => x.Errors)
                .Select(x => x.ErrorMessage).ToList();
            return errorList;
        }

        public static Dictionary<string, List<string>> GetErrors(this ModelStateDictionary modelState)
        {
            var errorList = modelState
                .Where(x => x.Value.Errors.Count > 0)
                .ToDictionary(
                    kvp => kvp.Key,
                    kvp => kvp.Value.Errors.Select(e => e.ErrorMessage).ToList()
                );
            return errorList;
        }
    }
}