Server Error in '/' Application. Object reference not set to an instance of an object. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.NullReferenceException: Object reference not set to an instance of an object. Source Error: Line 336: @foreach (var product in dropDownValues) Line 337: { Line 338: string url = Url.GetProductUrl(product); Line 339: string selected = product.Id == productId ? "selected=\"selected\"" : ""; Line 340: <option @(Html.Raw(selected)) value="@url">@product.Size, @product.Price.ToString("c")</option> Source File: c:\Websites\RedCaviar\Views\Home\ProductInfo.cshtml Line: 338 Stack Trace: [NullReferenceException: Object reference not set to an instance of an object.] Awers.RedCaviarMvc.Infrastructure.ViewHelper.GetProductUrl(UrlHelper url, Product product) in C:\Git\AwersWebSites\RedCaviarMvc\Infrastructure\ViewHelper.cs:26 ASP._Page_Views_Home_ProductInfo_cshtml.Execute() in c:\Websites\RedCaviar\Views\Home\ProductInfo.cshtml:338 System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +251 System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +147 System.Web.WebPages.StartPage.ExecutePageHierarchy() +85 System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +106 System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +377 System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +90 System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +793 System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +81 System.Web.Mvc.Async.<>c__DisplayClass3_1.<BeginInvokeAction>b__5(IAsyncResult asyncResult) +188 System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +38 System.Web.Mvc.<>c.<BeginExecuteCore>b__152_1(IAsyncResult asyncResult, ExecuteCoreState innerState) +29 System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +73 System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +52 System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +39 System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +38 System.Web.Mvc.<>c.<BeginProcessRequest>b__20_1(IAsyncResult asyncResult, ProcessRequestState innerState) +43 System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +73 System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +38 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +431 System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +75 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +158 Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.3928.0