C#通过反射动态创建Enum

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最新推荐文章于 2025-01-16 17:08:13 发布

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分类专栏： C# 文章标签：反射 C# 枚举

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C#通过反射动态创建Enum


        /// <summary>
        /// 动态创建枚举
        /// </summary>
        /// <param name="enumDictionary">枚举元素列表</param>
        /// <param name="enumName">枚举名</param>
        /// <returns>Enum枚举</returns>
        public static Enum CreateEnum(Dictionary<string, int> enumDictionary, string enumName = "DefalutEnum")
        {
            if (enumDictionary == null || enumDictionary.Count <= 0)
                return null;

            AppDomain currentDomain = AppDomain.CurrentDomain;
            AssemblyName aName = new AssemblyName("TempAssembly");
            AssemblyBuilder ab = currentDomain.DefineDynamicAssembly(aName, AssemblyBuilderAccess.Run);
            ModuleBuilder mb = ab.DefineDynamicModule(aName.Name);
            if (string.IsNullOrEmpty(enumName))
            {
                enumName = "DefalutEnum";
            }
            EnumBuilder eb = mb.DefineEnum(enumName, TypeAttributes.Public, typeof(int));

            foreach (var item in enumDictionary)
            {
                eb.DefineLiteral(item.Key, item.Value);
            }

            Type finished = eb.CreateType();
            Enum eEnum = Reflection.GetDefault(finished) as Enum;
            //foreach (object item in Enum.GetValues(eEnum.GetType()))
            //{
            //    Debug.LogError(string.Format("{0}.{1} = {2}", finished, item, ((int)item)));
            //}
            return eEnum;
        }

        /// <summary>
        /// 动态创建枚举
        /// </summary>
        /// <param name="enumDictionary">枚举元素列表</param>
        /// <param name="enumName">枚举名</param>
        /// <returns>Enum枚举</returns>
        public static Enum CreateEnum(List<string> enumList, string enumName = "DefalutEnum")
        {
            if (enumList == null || enumList.Count <= 0)
                return null;

            AppDomain currentDomain = AppDomain.CurrentDomain;
            AssemblyName aName = new AssemblyName("TempAssembly");
            AssemblyBuilder ab = currentDomain.DefineDynamicAssembly(aName, AssemblyBuilderAccess.Run);
            ModuleBuilder mb = ab.DefineDynamicModule(aName.Name);
            if (string.IsNullOrEmpty(enumName))
            {
                enumName = "DefalutEnum";
            }
            EnumBuilder eb = mb.DefineEnum(enumName, TypeAttributes.Public, typeof(int));

            for (int i = 0; i < enumList.Count; i++)
            {
                eb.DefineLiteral(enumList[i],i);
            }
            Type finished = eb.CreateType();
            Enum eEnum = Reflection.GetDefault(finished) as Enum;
            //foreach (object item in Enum.GetValues(eEnum.GetType()))
            //{
            //    Debug.LogError(string.Format("{0}.{1} = {2}", finished, item, ((int)item)));
            //}
            return eEnum;
        }