namespace U413.UI.CustomModelBinders
{
    /// <summary>
    /// Override for DefaultModelBinder in order to implement fixes to its behavior.
    /// </summary>
    public class U413ModelBinder : DefaultModelBinder
    {
        /// <summary>
        /// Fix for the default model binder's failure to decode enum types when binding to JSON.
        /// </summary>
        protected override object GetPropertyValue(ControllerContext controllerContext, ModelBindingContext bindingContext,
            PropertyDescriptor propertyDescriptor, IModelBinder propertyBinder)
        {
            var propertyType = propertyDescriptor.PropertyType;
            if (propertyType.IsEnum)
            {
                var providerValue = bindingContext.ValueProvider.GetValue(bindingContext.ModelName);
                if (null != providerValue)
                {
                    var value = providerValue.RawValue;
                    if (null != value)
                    {
                        var valueType = value.GetType();
                        if (!valueType.IsEnum)
                        {
                            return Enum.ToObject(propertyType, value);
                        }
                    }
                }
            }
            return base.GetPropertyValue(controllerContext, bindingContext, propertyDescriptor, propertyBinder);
        }
    }
}

protected override void OnApplicationStarted()
{
    base.OnApplicationStarted();

    AreaRegistration.RegisterAllAreas();
    RegisterRoutes(RouteTable.Routes);

    // Register your new model binder
    ModelBinders.Binders.DefaultBinder = new U413ModelBinder();
}

public class SomeModel
{
   public MyEnum EnumValue { get; set; }
   public int BindToThisGuy
   {
      get { return (int) EnumValue; }
      set { EnumValue = (MyEnum)value; }
   }
}

namespace MyApp.Enums
{
    public enum ATS_Tabs { TabOne = 0, TabTwo = 1, TabThree = 2, TabFour = 3, TabFive = 4 };

    public class ModelEnums
    {
        public static IEnumerable<Type> Types
        {
            get
            {
                List<Type> Types = new List<Type>();
                Types.Add(typeof(ATS_Tabs));
                return Types;
            }
        }
    }
}

namespace MyApp.CustomModelBinders
{
    public class EnumModelBinder : IModelBinder
    {
        public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
        {
            ValueProviderResult valueResult = bindingContext.ValueProvider.GetValue(bindingContext.ModelName);
            ModelState modelState = new ModelState { Value = valueResult };
            object actualValue = null;

            try
            {
                return Enum.ToObject(Type.GetType(bindingContext.ModelType.AssemblyQualifiedName), Convert.ToInt32(valueResult.AttemptedValue));
            }
            catch (FormatException e)
            {
                modelState.Errors.Add(e);
            }

            bindingContext.ModelState.Add(bindingContext.ModelName, modelState);
            return actualValue;
        }
    }
}

protected void Application_Start()
    {
        AreaRegistration.RegisterAllAreas();

        foreach (Type type in ModelEnums.Types)
        {
            ModelBinders.Binders.Add(type, new EnumModelBinder());
        }

        RegisterGlobalFilters(GlobalFilters.Filters);
        RegisterRoutes(RouteTable.Routes);
    }