96 lines
3.4 KiB
C#
96 lines
3.4 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Collections.Specialized;
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using System.ComponentModel;
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using System.Linq;
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using System.Linq.Expressions;
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using System.Reflection;
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using System.Text;
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namespace Transmission.SDK
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{
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public class EnumHelper
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{
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/// <summary>
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/// 获取变量名称
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/// </summary>
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/// <param name="exp">变量</param>
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/// <returns></returns>
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public static string GetVarName(Expression<Func<string, string>> exp)
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{
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return ((MemberExpression)exp.Body).Member.Name;
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}
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/// <summary>
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/// 获取枚举项描述信息 例如GetEnumDesc(Days.Sunday)
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/// </summary>
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/// <param name="en">枚举项 如Days.Sunday</param>
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/// <returns></returns>
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public static string GetEnumDesc(System.Enum en)
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{
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Type type = en.GetType();
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MemberInfo[] memInfo = type.GetMember(en.ToString());
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if (memInfo != null && memInfo.Length > 0)
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{
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object[] attrs = memInfo[0].GetCustomAttributes(typeof(DescriptionAttribute), false);
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if (attrs != null && attrs.Length > 0)
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return ((DescriptionAttribute)attrs[0]).Description;
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}
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return en.ToString();
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}
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///<summary>
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/// EnumToNameValueCollection
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///</summary>
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///<param name="enumType">Type,该参数的格式为typeof(需要读的枚举类型)</param>
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///<returns>键值对</returns>
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public static NameValueCollection EnumToNVC(Type enumType)
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{
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NameValueCollection nvc = new NameValueCollection();
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Type typeDescription = typeof(DescriptionAttribute);
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FieldInfo[] fields = enumType.GetFields();
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string strText = string.Empty;
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string strValue = string.Empty;
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foreach (FieldInfo field in fields)
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{
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if (field.FieldType.IsEnum)
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{
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strValue = ((int)enumType.InvokeMember(field.Name, BindingFlags.GetField, null, null, null)).ToString();
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object[] arr = field.GetCustomAttributes(typeDescription, true);
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if (arr.Length > 0)
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{
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DescriptionAttribute aa = (DescriptionAttribute)arr[0];
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strText = aa.Description;
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}
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else
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{
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strText = field.Name;
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}
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nvc.Add(strValue, strText);
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}
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}
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return nvc;
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}
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///<summary>
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/// EnumToDictionary
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///</summary>
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///<param name="enumType"></param>
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///<returns>Dictionary枚举项，描述</returns>
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public static Dictionary<string, string> EnumToDictionary(Type enumType)
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{
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Dictionary<string, string> dic = new Dictionary<string, string>();
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FieldInfo[] fieldinfos = enumType.GetFields();
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foreach (FieldInfo field in fieldinfos)
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{
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if (field.FieldType.IsEnum)
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{
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Object[] objs = field.GetCustomAttributes(typeof(DescriptionAttribute), false);
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dic.Add(field.Name, ((DescriptionAttribute)objs[0]).Description);
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}
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}
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return dic;
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}
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}
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}
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