Student.Model/Code/EnumExtensions.cs
(完整代码) 1KBusing System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
namespace System
{
public static class EnumExtensions
{
private static readonly ConcurrentDictionary<string, string> DescriptionCache = new ConcurrentDictionary<string, string>();
/// <summary>
/// 获取枚举类型的Description说明
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public static string ToDescription(this Enum value)
{
var type = value.GetType();
var info = type.GetField(value.ToString());
var key = type.FullName + info.Name;
if (!DescriptionCache.TryGetValue(key, out string desc))
{
var attrs = info.GetCustomAttributes(typeof(DescriptionAttribute), true);
if (attrs.Length < 1)
desc = string.Empty;
else
desc = attrs[0] is DescriptionAttribute
descriptionAttribute
? descriptionAttribute.Description
: value.ToString();
DescriptionCache.TryAdd(key, desc);
}
return desc;
}
}
}
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