private async Task <IEnumerable <BlogViewModel> > LoadAll() { var result = new List <BlogViewModel>(); var filterRules = new FilterCondition(); if (SelectedCategories.IsNotNullOrEmpty()) { var filterCategories = new FilterGroup(); foreach (var category in SelectedCategories) { filterCategories.Add(new FilterRule { Field = "CategoryId", FilterOperator = FilterOperator.Equal, PropertyValues = new List <object> { Guid.Parse(category) }, LogicalOperator = LogicalOperator.Or }); } filterRules.Add(filterCategories); } if (SearchText.IsNotNullOrEmpty()) { var filterGroup = new FilterGroup() { LogicalOperator = LogicalOperator.And }; filterGroup.Add(new FilterRule("Title", FilterOperator.Contains, LogicalOperator.Or, SearchText)); filterGroup.Add(new FilterRule("Summary", FilterOperator.Contains, LogicalOperator.Or, SearchText)); filterGroup.Add(new FilterRule("MarkdownContent", FilterOperator.Contains, LogicalOperator.Or, SearchText)); filterRules.Add(filterGroup); } var pageQuery = new PagingQuery { Pagination = new Pagination { PageNumber = PageNumber, PageSize = PageSize, }, FilterCondition = filterRules }; var entities = await _dataAdminService.GetPagedArticles(pageQuery); Total = entities.TotalRecords; if (entities.Count > 0) { var viewModels = AppRuntimeContext.Current.Adapt <List <BlogViewModel> >(entities); result.AddRange(viewModels); } // await Task.Delay(1000 * 3); return(result); }