Error when using partial view :ProductVariant_SKU_Man_Stock

Just try this, i have not tested it , just a guess :

Add this line to PrepareProductOverviewModels [Nope.WebControllers.CatalogController]

var quantity = productVariant.AllowedQuantities;

after this line
var productVariant = _priceCalculationService.GetProductVariantWithMinimalPrice(productVariants, _workContext.CurrentCustomer, true, int.MaxValue, out minimalPrice); //line248

Now add this line in the ProductOverviewModel
public string quantity { get; set; } it should be included in the partial class
public partial class ProductPriceModel : BaseNopModel

Now call quantity in the _ProductBox.cshtml
like:
@Html.Raw(Model.ProductPrice.quantity)

Hi

Well as you posted the above code I had just worked out that I may be able to get to the Stock Qty by using this line in the productVariant.StockQuantity; at the line in the code u suggested.

However I was still trying to work out how how to get that in to the view, so I followed the code u suggested with a couple of minor changes

priceModel.StockQty = productVariant.StockQuantity; instead of
var quantity = productVariant.AllowedQuantities;

public int StockQty { get; set; } instead of public string quantity { get; set; }

and @Model.ProductPrice.StockQty instead of
@Html.Raw(Model.ProductPrice.quantity)

and it worked :) thank you again for your time and patience, I am begining to learn a little C# and MVC. :)

Thanks