C#MVC列挙転送SelectListItem

 
  
 public static class EnumKit
    {
        #region              
        /// 

        ///               
        /// 
        ///     
        ///      (      。  ：  /   )
        ///     (      。  ：  /     )
        /// 
        public static IList ToSelectList(Type enumType
            , string firstText = "   "
            , string firstValue = "-1")
        {
            IList listItem = new List();

            if (enumType.IsEnum)
            {
                AddFirst(listItem, firstText, firstValue);

                Array values = Enum.GetValues(enumType);
                if (null != values && values.Length > 0)
                {
                    foreach (int item in values)
                    {
                        listItem.Add(new SelectListItem { Value = item.ToString(), Text = Enum.GetName(enumType, item) });
                    }
                }
            }
            else
            {
                throw new ArgumentException("        ！");
            }
            return listItem;
        }

        static void AddFirst(IList listItem, string firstText, string firstValue)
        {
            if (!string.IsNullOrWhiteSpace(firstText))
            {
                if (string.IsNullOrWhiteSpace(firstValue))
                    firstValue = "-1";
                listItem.Add(new SelectListItem { Text = firstText, Value = firstValue });
            }
        }

        /// 

        ///                  
        /// 
        /// 
        /// 
        public static IList ToSelectListByDesc(
            Type enumType
            , string firstText = "   "
            , string firstValue = "-1"
            )
        {
            IList listItem = new List();

            if (enumType.IsEnum)
            {
                AddFirst(listItem, firstText, firstValue);
                string[] names = Enum.GetNames(enumType);
                names.ToList().ForEach(item =>
                {
                    string description = string.Empty;
                    var field = enumType.GetField(item);
                    object[] arr = field.GetCustomAttributes(typeof(DescriptionAttribute), true); //          
                    description = arr != null && arr.Length > 0 ? ((DescriptionAttribute)arr[0]).Description : item;   //      

                    listItem.Add(new SelectListItem() { Value = ((int)Enum.Parse(enumType, item)).ToString(), Text = description });
                });
            }
            else
            {
                throw new ArgumentException("        ！");
            }
            return listItem;
        }
        #endregion

        #region        

        /// 

        ///          
        /// 
        ///    
        ///   
        public static string GetDescription(this Enum enumValue)
        {
            string value = enumValue.ToString();
            FieldInfo field = enumValue.GetType().GetField(value);
            object[] objs = field.GetCustomAttributes(typeof(System.ComponentModel.DescriptionAttribute), false);
            if (objs == null || objs.Length == 0) return value;
            System.ComponentModel.DescriptionAttribute attr = (System.ComponentModel.DescriptionAttribute)objs[0];
            return attr.Description;
        }

        #endregion
    }
  
 
  

  
    ：
  
 public ActionResult Index()
        {
            IList listItem = EnumKit.ToSelectList(typeof(OrderStatus), "  ");
            ViewBag.SelectListItem = listItem;


            IList SelectListItemDesc = EnumKit.ToSelectListByDesc(typeof(OrderStatus));
            ViewBag.SelectListItemDesc = SelectListItemDesc;


            //         
            string sendHuo = OrderStatus.  .GetDescription();

            return View();
        }
  
コード 、ダウンロードをクリック