根据字符串获得枚举值

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var em = (ChooseEnum) Enum.Parse( typeof(ChooseEnum), desc);

根据枚举值获得DescriptionAttribute

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public static string ConvertToSql(Enum value)
       {
           Type enumType = value.GetType();
           string name = Enum.GetName(enumType, value);
           if (name != null)
           {
               FieldInfo fieldInfo = enumType.GetField(name);
               if (fieldInfo != null)
               {
                   DescriptionAttribute attribute = Attribute.GetCustomAttribute(fieldInfo, typeof(DescriptionAttribute), false) as DescriptionAttribute;
                   if (attribute != null)
                   {
                       return attribute.Description;
                   }
               }
           }

           return null;
       }

参考链接:C# 获取与解析枚举类型的 DescriptionAttribute
c#如何根据字符串获得枚举对象对应的值