Select List Of Enum Descriptions - CSharp System

CSharp examples for System:Enum

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Description

Select List Of Enum Descriptions

Demo Code


using System.Web.Mvc;
using System.Linq;
using System.ComponentModel;
using System.Collections.Generic;
using System;/*from   w  ww. j av a 2 s  .c  om*/

public class Main{
        public static List<SelectListItem> SelectListOfEnumDescriptions<T>(bool hasNullItem)
        {
            if (!typeof(T).IsEnum)
                return new List<SelectListItem>();

            var result = new List<SelectListItem>();
            if (hasNullItem)
            {
                result.Add(new SelectListItem { Text = "", Value = null });
            }
            result.AddRange(
                (from object type in Enum.GetValues(typeof(T))
                 select new SelectListItem
                 {
                     Text = type.Description(),
                     Value = type.ToString()
                 }));
            return result.ToList();
        }
        private static string Description(this object T)
        {
            if (!T.GetType().IsEnum) return "";

            var eEnum = (Enum)T;

            var fieldInfo = eEnum.GetType().GetField(eEnum.ToString());

            var attributes = (DescriptionAttribute[])fieldInfo.GetCustomAttributes(typeof(DescriptionAttribute), false);

            return attributes.Length > 0 ? attributes[0].Description : eEnum.ToString();
        }
        public static string Description(this Enum eEnum)
        {
            var fieldInfo = eEnum.GetType().GetField(eEnum.ToString());

            var attributes = (DescriptionAttribute[])fieldInfo.GetCustomAttributes(typeof(DescriptionAttribute), false);

            return attributes.Length > 0 ? attributes[0].Description : eEnum.ToString();
        }
}

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