public async Task <OperationResult <FlashSaleOrderResponse> > CheckCanBuyFlashSaleOrderAsync(FlashSaleOrderRequest request) { if (request == null || request.UserId == Guid.Empty || string.IsNullOrWhiteSpace(request.UseTel) || request.Products == null || !request.Products.Any()) { return(OperationResult.FromError <FlashSaleOrderResponse>("-1", "参数错误")); } else { return(OperationResult.FromResult(await FlashSaleManager.CheckCanBuyFlashSaleOrderAsync(request))); } }