EnumDescription类代码
using System; using System.Reflection; using System.Collections; using System.Text; namespace EnumHelper { /// <summary> /// 把枚举值按照指定的文本显示 /// <remarks> /// 一般通过枚举值的ToString()可以得到变量的文本， /// 但是有时候需要的到与之对应的更充分的文本， /// 这个类帮助达到此目的 /// </remarks> /// </summary> /// <example> /// [EnumDescription("中文数字")] /// enum MyEnum /// { /// [EnumDescription("数字一")] /// One = 1, /// /// [EnumDescription("数字二")] /// Two, /// /// [EnumDescription("数字三")] /// Three /// } /// EnumDescription.GetEnumText(typeof(MyEnum)); /// EnumDescription.GetFieldText(MyEnum.Two); /// EnumDescription.GetFieldTexts(typeof(MyEnum)); /// </example> [AttributeUsage(AttributeTargets.Field | AttributeTargets.Enum)] public class EnumDescription : Attribute { private string enumDisplayText; private int enumRank; private FieldInfo fieldIno; /// <summary> /// 描述枚举值 /// </summary> /// <param name="enumDisplayText">描述内容</param> /// <param name="enumRank">排列顺序</param> public EnumDescription(string enumDisplayText, int enumRank) { this.enumDisplayText = enumDisplayText; this.enumRank = enumRank; } /// <summary> /// 描述枚举值，默认排序为5 /// </summary> /// <param name="enumDisplayText">描述内容</param> public EnumDescription(string enumDisplayText) : this(enumDisplayText, 5) { } public string EnumDisplayText { get { return this.enumDisplayText; } } public int EnumRank { get { return enumRank; } } public int EnumValue { get { return (int)fieldIno.GetValue(null); } } public string FieldName { get { return fieldIno.Name; } } #region =========================================对枚举描述属性的解释相关函数 /// <summary> /// 排序类型 /// </summary> public enum SortType { /// <summary> ///按枚举顺序默认排序 /// </summary> Default, /// <summary> /// 按描述值排序 /// </summary> DisplayText, /// <summary> /// 按排序熵 /// </summary> Rank } private static System.Collections.Hashtable cachedEnum = new Hashtable(); /// <summary> /// 得到对枚举的描述文本 /// </summary> /// <param name="enumType">枚举类型</param> /// <returns></returns> public static string GetEnumText(Type enumType) { EnumDescription[] eds = (EnumDescription[])enumType.GetCustomAttributes(typeof(EnumDescription), false); if (eds.Length != 1) return string.Empty; return eds[0].EnumDisplayText; } /// <summary> /// 得到对枚举的值 /// </summary> /// <param name="enumType">枚举类型</param> /// <returns></returns> public static int GetEnumValue(Type enumType) { EnumDescription[] eds = (EnumDescription[])enumType.GetCustomAttributes(typeof(EnumDescription), false); if (eds.Length != 1) return 0; return eds[0].EnumValue; } /// <summary> /// 获得指定枚举类型中，指定值的描述文本。 /// </summary> /// <param name="enumValue">枚举值，不要作任何类型转换</param> /// <returns>描述字符串</returns> public static string GetFieldText(object enumValue) { EnumDescription[] descriptions = GetFieldTexts(enumValue.GetType(), SortType.Default); foreach (EnumDescription ed in descriptions) { if (ed.fieldIno.Name == enumValue.ToString()) return ed.EnumDisplayText; } return string.Empty; } /// <summary> /// 得到枚举类型定义的所有文本，按定义的顺序返回 /// </summary> /// <exception cref="NotSupportedException"></exception> /// <param name="enumType">枚举类型</param> /// <returns>所有定义的文本</returns> public static EnumDescription[] GetFieldTexts(Type enumType) { return GetFieldTexts(enumType, SortType.Default); } /// <summary> /// 得到枚举类型定义的所有文本 /// </summary> /// <exception cref="NotSupportedException"></exception> /// <param name="enumType">枚举类型</param> /// <param name="sortType">指定排序类型</param> /// <returns>所有定义的文本</returns> public static EnumDescription[] GetFieldTexts(Type enumType, SortType sortType) { EnumDescription[] descriptions = null; //缓存中没有找到，通过反射获得字段的描述信息 if (cachedEnum.Contains(enumType.FullName) == false) { FieldInfo[] fields = enumType.GetFields(); ArrayList edAL = new ArrayList(); foreach (FieldInfo fi in fields) { object[] eds = fi.GetCustomAttributes(typeof(EnumDescription), false); if (eds.Length != 1) continue; ((EnumDescription)eds[0]).fieldIno = fi; edAL.Add(eds[0]); } cachedEnum.Add(enumType.FullName, (EnumDescription[])edAL.ToArray(typeof(EnumDescription))); } descriptions = (EnumDescription[])cachedEnum[enumType.FullName]; if (descriptions.Length <= 0) throw new NotSupportedException("枚举类型[" + enumType.Name + "]未定义属性EnumValueDescription"); //按指定的属性冒泡排序 for (int m = 0; m < descriptions.Length; m++) { //默认就不排序了 if (sortType == SortType.Default) break; for (int n = m; n < descriptions.Length; n++) { EnumDescription temp; bool swap = false; switch (sortType) { case SortType.Default: break; case SortType.DisplayText: if (string.Compare(descriptions[m].EnumDisplayText, descriptions[n].EnumDisplayText) > 0) swap = true; break; case SortType.Rank: if (descriptions[m].EnumRank > descriptions[n].EnumRank) swap = true; break; } if (swap) { temp = descriptions[m]; descriptions[m] = descriptions[n]; descriptions[n] = temp; } } } return descriptions; } #endregion } }
获取枚举值列表，EnumProductType是您的枚举类型，可以获取所有枚举值列表：
foreach (EnumDescription i in EnumDescription.GetFieldTexts(typeof(EnumProductType))) { ListItem listitem = new ListItem(i.EnumDisplayText.ToString(), i.FieldName); list.Add(listitem); }