using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Linq;

using System.Reflection;

using System.Security.Cryptography;

using System.Text;

using System.Collections.Generic;

using System.ComponentModel.DataAnnotations;

​

public static class Program

{

    public static void Main()

    {

        var data = (int)OrderStatus.Pending;

        var temp = data.GetEnumDescription<OrderStatus>();

        Console.WriteLine(temp);

    }

    public static string GetEnumDescription<T>(this int value) where T : Enum

    {

        FieldInfo fi = (typeof(T)).GetType().GetField(value.ToString());

        Console.WriteLine((typeof(T)));

        var result = "";

        if (fi.GetCustomAttributes(typeof(DescriptionAttribute), false) is DescriptionAttribute[] attributes && attributes.Any())

        {

            result = attributes.First().Description;

        }

​

        return result;

        //if (!typeof(T).IsEnum)

        //{

        //  throw new ArgumentException("T must be an enumerated type");

        //}

        //var result = "";

​

        //var type = (typeof(T)).GetType();

​

        //foreach (int item in Enum.GetValues(typeof(T)))

        //{

        //  if (item == value)

        //  {

        //      var description = type.GetField("Description");

        //  }

        //}

        //return result;

    }

    public enum OrderStatus

        {

            [Display(Name = "Đã tạo", Description = "#078B64")]

            Created,

            [Display(Name = "Chờ duyệt", Description = "#666666")]

            Pending,

            [Display(Name = "Đã duyệt", Description = "#ff9933")]

            Approved,

            [Display(Name = "Đã hoàn thành", Description = "#078B64")]

            Complete,

            [Display(Name = "Hủy - Chờ duyệt", Description = "#fd397a")]

            Cancelled_Pedding,

            [Display(Name = "Hủy - Đã duyệt", Description = "#fd397a")]

            Cancelled_Approved,

            [Display(Name = "Hủy - Đã hoàn tiền", Description = "#fd397a")]

            Cancelled_Complete

        }

}