EnumOptions.cs
2.02 KB
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using Rcs.Domain.Attributes;
namespace Rcs.Shared.Options
{
/// <summary>
/// 枚举下拉选项工具类
/// 从枚举特性自动生成下拉选项，支持多语言
/// @author zzy
/// </summary>
public static class EnumOptions
{
/// <summary>
/// 支持的语言
/// </summary>
public enum Language { ZhCn, En }
/// <summary>
/// 下拉选项
/// </summary>
public class Option
{
public string Label { get; set; } = string.Empty;
public int Value { get; set; }
}
/// <summary>
/// 获取枚举的下拉选项列表
/// </summary>
/// <typeparam name="T">枚举类型</typeparam>
/// <param name="lang">语言</param>
/// <returns>下拉选项列表</returns>
public static List<Option> GetOptions<T>(Language lang = Language.ZhCn) where T : Enum
{
return Enum.GetValues(typeof(T))
.Cast<T>()
.Select(e => new Option
{
Value = Convert.ToInt32(e),
Label = GetDescription(e, lang)
})
.ToList();
}
/// <summary>
/// 获取枚举值的描述
/// </summary>
private static string GetDescription<T>(T value, Language lang) where T : Enum
{
var field = typeof(T).GetField(value.ToString());
var attr = field?.GetCustomAttribute<EnumDescriptionAttribute>();
if (attr == null) return value.ToString();
return lang == Language.En ? attr.En : attr.ZhCn;
}
/// <summary>
/// 解析语言参数
/// </summary>
public static Language ParseLanguage(string lang) =>
lang?.ToLower() switch
{
"en" or "en-us" => Language.En,
_ => Language.ZhCn
};
}
}