枚举获得Description扩展方法

定义枚举类型：

internal enum SexEnum
{
	[Description("男性")]
	Man=1,
	[Description("女性")]
	Woman =2,
	[Description("未知")]
	Unknown =3,
	TestNoDescription=4
}

枚举扩展方法：

/// <summary>
/// 枚举<see cref="Enum" />的扩展辅助操作方法
/// </summary>
public static class EnumExtensions
{
	/// <summary>
	///     获取枚举项上的<see cref="DescriptionAttribute" />特性的文字描述
	/// </summary>
	/// <param name="value"></param>
	/// <returns></returns>
	public static string ToDescription(this Enum value)
	{
		var type = value.GetType();
		var member = type.GetMember(value.ToString()).FirstOrDefault();
		return member != null ? member.ToDescription() : value.ToString();
	}

	/// <summary>
	///     获取成员元数据的Description特性描述信息
	/// </summary>
	/// <param name="member">成员元数据对象</param>
	/// <param name="inherit">是否搜索成员的继承链以查找描述特性</param>
	/// <returns>返回Description特性描述信息，如不存在则返回成员的名称</returns>
	public static string ToDescription(this MemberInfo member, bool inherit = false)
	{
		var desc = member.GetAttribute<DescriptionAttribute>(inherit);
		return desc == null ? member.Name : desc.Description;
	}

	/// <summary>
	///     从类型成员获取指定Attribute特性
	/// </summary>
	/// <typeparam name="T">Attribute特性类型</typeparam>
	/// <param name="memberInfo">类型类型成员</param>
	/// <param name="inherit">是否从继承中查找</param>
	/// <returns>存在返回第一个，不存在返回null</returns>
	public static T GetAttribute<T>(this MemberInfo memberInfo, bool inherit = false) where T : Attribute
	{
		var descripts = memberInfo.GetCustomAttributes(typeof(T), inherit);
		//获取第一个DescriptionAttribute
		return descripts.FirstOrDefault() as T;
	}
}

获得枚举信息：

List<EnumInfo> result = new List<EnumInfo>();
var list = Enum.GetValues(typeof(SexEnum)).Cast<SexEnum>();
Console.WriteLine($"枚举结果如下：");
foreach (var item in list)
{
	var info = new EnumInfo() { Name = item.ToString(), Value = (int)item, Description = item.ToDescription() };
	result.Add(info);
	Console.WriteLine($"Name:{info.Name},Value:{info.Value},Description:{info.Description}");
}

泛型方法:

public static List<EnumInfo> GetEnumList<T>() where T : Enum
{
    var type = typeof(T);
    List<EnumInfo> result = new List<EnumInfo>();
    var list = Enum.GetValues(type).Cast<T>();
    foreach (var item in list)
    {
        var info = new EnumInfo() { Name = item.ToString(), Value = (int)Convert.ChangeType(item, typeof(int)), Description = item.ToDescription() };
        result.Add(info);
    }
    return result;
}

EnumInfo类

public class EnumInfo
{
    public string Name { get; set; }
    public short Value { get; set; }
    public string Description { get; set; }
}

示例代码

EnumTools