با سلام و احترام
ممنون از پاسخ شما
این تست کرده بودم میتونید خالی نبودن متغیر فوق ببینید اینم فیلدهای اصلی این کلاس
#region Properties /// <summary> /// Gets or sets the product variant identifier /// </summary> public int ProductVariantId { get; set; } /// <summary> /// Gets or sets the product identifier /// </summary> public int ProductId { get; set; } /// <summary> /// Gets or sets the name /// </summary> public string Name { get; set; } /// <summary> /// Gets or sets the SKU /// </summary> public string SKU { get; set; } /// <summary> /// Gets or sets the description /// </summary> public string Description { get; set; } /// <summary> /// Gets or sets the admin comment /// </summary> public string AdminComment { get; set; } /// <summary> /// Gets or sets the manufacturer part number /// </summary> public string ManufacturerPartNumber { get; set; } /// <summary> /// Gets or sets a value indicating whether the product variant is gift card /// </summary> public bool IsGiftCard { get; set; } /// <summary> /// Gets or sets the gift card type /// </summary> public int GiftCardType { get; set; } /// <summary> /// Gets or sets a value indicating whether the product variant is download /// </summary> public bool IsDownload { get; set; } /// <summary> /// Gets or sets the download identifier /// </summary> public int DownloadId { get; set; } /// <summary> /// Gets or sets a value indicating whether this downloadable product can be downloaded unlimited number of times /// </summary> public bool UnlimitedDownloads { get; set; } /// <summary> /// Gets or sets the maximum number of downloads /// </summary> public int MaxNumberOfDownloads { get; set; } /// <summary> /// Gets or sets the number of days during customers keeps access to the file. /// </summary> public int? DownloadExpirationDays { get; set; } /// <summary> /// Gets or sets the download activation type /// </summary> public int DownloadActivationType { get; set; } /// <summary> /// Gets or sets a value indicating whether the product variant has a sample download file /// </summary> public bool HasSampleDownload { get; set; } /// <summary> /// Gets or sets the sample download identifier /// </summary> public int SampleDownloadId { get; set; } /// <summary> /// Gets or sets a value indicating whether the product has user agreement /// </summary> public bool HasUserAgreement { get; set; } /// <summary> /// Gets or sets the text of license agreement /// </summary> public string UserAgreementText { get; set; } /// <summary> /// Gets or sets a value indicating whether the product variant is recurring /// </summary> public bool IsRecurring { get; set; } /// <summary> /// Gets or sets the cycle length /// </summary> public int CycleLength { get; set; } /// <summary> /// Gets or sets the cycle period /// </summary> public int CyclePeriod { get; set; } /// <summary> /// Gets or sets the total cycles /// </summary> public int TotalCycles { get; set; } /// <summary> /// Gets or sets a value indicating whether the entity is ship enabled /// </summary> public bool IsShipEnabled { get; set; } /// <summary> /// Gets or sets a value indicating whether the entity is free shipping /// </summary> public bool IsFreeShipping { get; set; } /// <summary> /// Gets or sets the additional shipping charge /// </summary> public decimal AdditionalShippingCharge { get; set; } /// <summary> /// Gets or sets a value indicating whether the product variant is marked as tax exempt /// </summary> public bool IsTaxExempt { get; set; } /// <summary> /// Gets or sets the tax category identifier /// </summary> public int TaxCategoryId { get; set; } /// <summary> /// Gets or sets a value indicating how to manage inventory /// </summary> public int ManageInventory { get; set; } /// <summary> /// Gets or sets the stock quantity /// </summary> public int StockQuantity { get; set; } /// <summary> /// Gets or sets a value indicating whether to display stock availability /// </summary> public bool DisplayStockAvailability { get; set; } /// <summary> /// Gets or sets a value indicating whether to display stock quantity /// </summary> public bool DisplayStockQuantity { get; set; } /// <summary> /// Gets or sets the minimum stock quantity /// </summary> public int MinStockQuantity { get; set; } /// <summary> /// Gets or sets the low stock activity identifier /// </summary> public int LowStockActivityId { get; set; } /// <summary> /// Gets or sets the quantity when admin should be notified /// </summary> public int NotifyAdminForQuantityBelow { get; set; } /// <summary> /// Gets or sets a value indicating whether to allow orders when out of stock /// </summary> public int Backorders { get; set; } /// <summary> /// Gets or sets the order minimum quantity /// </summary> public int OrderMinimumQuantity { get; set; } /// <summary> /// Gets or sets the order maximum quantity /// </summary> public int OrderMaximumQuantity { get; set; } /// <summary> /// Gets or sets the warehouse identifier /// </summary> public int WarehouseId { get; set; } /// <summary> /// Gets or sets a value indicating whether to disable buy button /// </summary> public bool DisableBuyButton { get; set; } /// <summary> /// Gets or sets a value indicating whether to show "Call for Pricing" or "Call for quote" instead of price /// </summary> public bool CallForPrice { get; set; } /// <summary> /// Gets or sets the price /// </summary> public decimal Price { get; set; } /// <summary> /// Gets or sets the old price /// </summary> public decimal OldPrice { get; set; } /// <summary> /// Gets or sets the product cost /// </summary> public decimal ProductCost { get; set; } /// <summary> /// Gets or sets a value indicating whether a customer enters price /// </summary> public bool CustomerEntersPrice { get; set; } /// <summary> /// Gets or sets the minimum price entered by a customer /// </summary> public decimal MinimumCustomerEnteredPrice { get; set; } /// <summary> /// Gets or sets the maximum price entered by a customer /// </summary> public decimal MaximumCustomerEnteredPrice { get; set; } /// <summary> /// Gets or sets the weight /// </summary> public decimal Weight { get; set; } /// <summary> /// Gets or sets the length /// </summary> public decimal Length { get; set; } /// <summary> /// Gets or sets the width /// </summary> public decimal Width { get; set; } /// <summary> /// Gets or sets the height /// </summary> public decimal Height { get; set; } /// <summary> /// Gets or sets the picture identifier /// </summary> public int PictureId { get; set; } /// <summary> /// Gets or sets the available start date and time /// </summary> public DateTime? AvailableStartDateTime { get; set; } /// <summary> /// Gets or sets the shipped end date and time /// </summary> public DateTime? AvailableEndDateTime { get; set; } /// <summary> /// Gets or sets a value indicating whether the entity is published /// </summary> public bool Published { get; set; } /// <summary> /// Gets or sets a value indicating whether the entity has been deleted /// </summary> public bool Deleted { get; set; } /// <summary> /// Gets or sets the display order /// </summary> public int DisplayOrder { get; set; } /// <summary> /// Gets or sets the date and time of instance creation /// </summary> public DateTime CreatedOn { get; set; } /// <summary> /// Gets or sets the date and time of instance update /// </summary> public DateTime UpdatedOn { get; set; } /// <summary> /// Gets or sets CouponCreated /// </summary> public bool? CouponetCreated { get; set; } /// <summary> /// Gets or sets the date and time of CouponCreated /// </summary> public DateTime? CouponetCreatedOn { get; set; } #endregion