public async Task InitilizeData() { try { string accestoken = Convert.ToString(Settings.Customer_Access_Token); char quote = '"'; string modifiedString = quote + accestoken + quote; string query = @"{customer(customerAccessToken:" + modifiedString + "){ id firstName lastName email phone createdAt lastIncompleteCheckout{id createdAt webUrl lineItems(first: 5){ edges{ node{quantity id title variant{ id price selectedOptions{name value} image{ id originalSrc}}}}}}addresses(first: 3){edges{ node{ id firstName lastName address1 address2 city company country}}}orders(first: 3){edges{node{id orderNumber name email lineItems(first: 3){ edges{ node{quantity variant{ id image{ originalSrc}}}}}}}}}}"; var result = await _apiService.GetCustomer(query); if (result != null) { _lastIncomplete = result.data.customer.lastIncompleteCheckout; CartList = new ObservableCollection <Node>(); foreach (var item in result.data.customer.lastIncompleteCheckout.lineItems.edges) { CartList.Add(item.node); } } else { CartList = new ObservableCollection <Node>(); } CostSummary = CartList.Sum(s => Convert.ToDouble(s.variant.price) * s.quantity); ShippingPrice = 0; TotalQuantity = CartList.Count(); TotalPrice = ShippingPrice + CostSummary; if (CartList.Count > 0) { IsViewVisible = true; } else { IsViewVisible = false; } } catch (Exception ex) { CostSummary = 0; ShippingPrice = 0; TotalPrice = 0; } }