枚举到整型的转换，扩展方法为枚举添加方法取得整数值

枚举到整型的转换，扩展方法为枚举添加方法取得整数值

    public enum OperateTypeEnum
    {
        Add =1,//添加
        Edit=2,//修改，编辑
        Delete = 3,//
       
        
    }

    
    public static class EnumHelp
    {
        public static int GetValue(this OperateTypeEnum operateTypeEnum)
        {
            Type type = operateTypeEnum.GetType();
            List< KeyValuePair<int,OperateTypeEnum>> keyCodeList = (from s in Enum.GetNames(type)
                                                                    let keyCode = Int32.Parse(Enum.Format(type, Enum.Parse(type, s), "d"))
                                                                    let operateType = (OperateTypeEnum) Enum.Parse(type, s)
                                                                    select new KeyValuePair<int, OperateTypeEnum>(keyCode, operateType)).ToList();
            KeyValuePair<int, OperateTypeEnum> currenItem = keyCodeList.FirstOrDefault(obj => obj.Value == operateTypeEnum);

            return currenItem.Key;
        }

          }