65 lines
2.2 KiB
C#
65 lines
2.2 KiB
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Linq;
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using System.Reflection;
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namespace IRaCIS.Core.Infrastructure.Extention
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{
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public static class EnumToSelectExtension
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{
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/// <summary>
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/// 将枚举转换成字典（枚举，自定义描述）
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/// </summary>
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/// <typeparam name="TEnum"></typeparam>
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/// <param name="exceptList">需要排除的枚举</param>
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/// <returns></returns>
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public static Dictionary<object, string> ToSelect<TEnum>( params TEnum[] exceptList) where TEnum : struct, Enum
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{
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var type = typeof(TEnum);
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var dict = new Dictionary<object, string>();
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foreach (var value in Enum.GetValues<TEnum>())
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//foreach (var value in type.GetEnumValues())
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{
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var attr = type.GetField(value.ToString())
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.GetCustomAttribute<DescriptionAttribute>();
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if (attr is null || exceptList.Contains(value)) continue;
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var key = type.GetFields().FirstOrDefault(t=>t.Name== value.ToString()).GetRawConstantValue();
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dict[key] = attr.Description;
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}
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return dict;
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}
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/// <summary>
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/// 扩展方法，获得枚举的Description
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/// </summary>
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/// <param name="value">枚举值</param>
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/// <param name="nameInstead">当枚举值没有定义DescriptionAttribute，是否使用枚举名代替，默认是使用</param>
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/// <returns>枚举的Description</returns>
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public static string GetDescription(this Enum value, Boolean nameInstead = true)
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{
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Type type = value.GetType();
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string name = Enum.GetName(type, value);
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if (name == null)
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{
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return null;
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}
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FieldInfo field = type.GetField(name);
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DescriptionAttribute attribute = System.Attribute.GetCustomAttribute(field, typeof(DescriptionAttribute)) as DescriptionAttribute;
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if (attribute == null && nameInstead == true)
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{
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return name;
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}
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return attribute?.Description;
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}
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}
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}
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