Hi Shyam,

In the future, could you please post the details of your issue directly in the forum post, rather than on an external link as a) links often end up breaking and b) the content of the google doc is not searchable and so anyone with a similar issue will not be able to find this post.

Bellow is the content of the document as of 2021-04-14 09:15am

1.Case First when calling CalculatePrice() method getting alway 0 price

.html Form Code when call CalculatePrice() method-

<h3>@(Model.Content.CalculatePrice()?.Formatted())</h3>

.cs file Code

   public static string GetProductReference(this IPublishedContent content)
    {
        return content.Key.ToString();
    }

    public static IProductSnapshot AsVendrProduct(this IPublishedContent content)
    {
        return VendrApi.Instance.GetProduct(content.GetProductReference(), null);
    }

    public static Price CalculatePrice(this IPublishedContent content)
    {
        return content.AsVendrProduct()?.CalculatePrice();
    }

See prize on browser-

2.Case Second when calling AddToCart() method getting an error-

Browser view when click on “Add To Cart” Button-

.html form file code-

<h3>@(Model.Content.CalculatePrice()?.Formatted())</h3>
@using (Html.BeginUmbracoForm("AddToCart", "CartSurface"))
{
    @Html.Hidden("productReference", Model.Content.GetProductReference())
    <div class="input-group">
        @Html.TextBox("quantity", 1, new { @type = "number", @class = "form-control input-number" })
    </div>

    <div class="input-group-btn">
        <button class="btn btn-warning">Add to Cart <i class="fas fa-cart-plus"></i></button>
    </div>
}

.cs file code-

     [HttpPost]
public ActionResult AddToCart(AddToCartDto postModel) 
{
    try
    {
        using (var uow = _unitOfWorkProvider.Create())
        {
            var currentPage = CurrentPage;
            var store = CurrentPage.GetStore();
                var order = _sessionManager.GetOrCreateCurrentOrder(store.Id)
                .AsWritable(uow)
                .AddProduct(postModel.ProductReference, postModel.Quantity);

            _orderService.SaveOrder(order);

            uow.Complete();
        }
    }
    catch (ValidationException ex)
    {
        ModelState.AddModelError("productReference", "Failed to add product to cart.");
        return CurrentUmbracoPage();
    }

    TempData["addedProductReference"] = postModel.ProductReference;

    return RedirectToCurrentUmbracoPage();
}

Getting error in .cs file screen shot-

After clicking “Add To Cart” Button then browser screen showing that type error-

is working on a reply...