asp.net Core 异步程序改造遇到的问题

        /// <summary>
        /// 判断当前用户的角色权限是否可以访问
        /// </summary>
        /// <param name="filterContext"></param>
        public override async Task OnActionExecutionAsync(ActionExecutingContext filterContext, ActionExecutionDelegate next)
        {
            if (_auth.CheckLogin() == false)
            {
                filterContext.HttpContext.Response.Cookies.Append("wangbg_login_error", "overdue");
                filterContext.Result = new RedirectResult("/Manage/Login");
                return;
            }
            if (Ignore == true)
            {
                await base.OnActionExecutionAsync(filterContext, next);
                return;
            }
            var tempUser = _auth.GetCurrentUser();
            if (tempUser.IsSystem == true)
            {
                await base.OnActionExecutionAsync(filterContext, next);
                return;
            }
            var request = filterContext.HttpContext.Request;
            var moduleId = request.Cookies["currentmoduleid"];
            if (string.IsNullOrEmpty(moduleId) == true)
            {
                throw new Exception("很抱歉！参数传递错误，访问被拒绝！");
            }
            var tempRet = await _sysRoleAuthorizeApp.ActionValidate(tempUser.SysRoleId, moduleId, request.Path);
            if (tempRet == false)
            {
                throw new Exception("很抱歉！您的权限不足，访问被拒绝！");
            }
            await base.OnActionExecutionAsync(filterContext, next);
        }