C#自定义特性并添加注释获取内容

   public override async void OnActionExecuted(ActionExecutedContext context)
        {
            #region 对特性上的注释处理
            if (context.ActionDescriptor.EndpointMetadata.Any(item => item.GetType() == typeof(LogAddAttribute)))
            {
                string actionname = context.RouteData.Values["action"].ToString();

                var actionDescriptor = context.ActionDescriptor as Microsoft.AspNetCore.Mvc.Controllers.ControllerActionDescriptor;
                var actionAttributes = actionDescriptor.MethodInfo.GetCustomAttributes(inherit: true);
                var myAttribute = actionAttributes.FirstOrDefault(a => a.GetType() == typeof(LogAddAttribute)) as LogAddAttribute;

                if (myAttribute != null)
                {
                    await _systemSetUpLogService.InsertLog(null, actionname);
                }
            }
            #endregion

            base.OnActionExecuted(context);
        }

    [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method)]
    public class LogAddAttribute : Attribute
    {
        /// <summary>
        /// 类型
        /// </summary>
        public OperateTypeEnum Type { get; set; }
        /// <summary>
        /// 描述
        /// </summary>
        public string Description { get; set; }

        public LogAddAttribute() { }

        public LogAddAttribute(OperateTypeEnum Type, string Description)
        {
            this.Type = Type;
            this.Description = Description;
        }
    }

    /// <summary>
    /// 不需要记录日志
    /// </summary>
    [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method)]
    public class LogNotAddAttribute : Attribute
    {
       
    }