public async Task <HttpResponseData> GetTodoItems([HttpTrigger(AuthorizationLevel.Anonymous, "get", Route = "todolists/{id}")] HttpRequestData req, int id, FunctionContext functionContext) { logger.LogInformation("Called GetTodoItems"); if (req.Headers.TryGetValues("Content-Type", out IEnumerable <string> values)) { if (values.Contains("text/csv")) { var request = new ExportTodosQuery() { ListId = id }; return(await this.processor.ExecuteAsync <ExportTodosQuery, ExportTodosVm>(functionContext, req, request, (r) => req.CreateFileContentResponseAsync(r.Content, r.ContentType, r.FileName))); } } var query = new GetTodoItemsWithPaginationQuery() { ListId = id }; return(await this.processor.ExecuteAsync <GetTodoItemsWithPaginationQuery, PaginatedList <TodoItemDto> >(functionContext, req, query, (r) => req.CreateObjectResponseAsync(r))); }