System.Web.HttpUnhandledException (0x80004005): Exception of type 'System.Web.HttpUnhandledException' was thrown. ---> System.InvalidOperationException: Sequence contains no elements
at System.Linq.Enumerable.Last[TSource](IEnumerable`1 source)
at DataAccessLayer.GetSidebarMenuItems(Nullable`1 categoryId, Nullable`1 productId) in d:\webhome\elettromercato.ch\www\App_Code\DataAccessLayer.cs:line 342
at usercontrols_SidebarMenu.BindData() in d:\webhome\elettromercato.ch\www\usercontrols\SidebarMenu.ascx.cs:line 59
at usercontrols_SidebarMenu.Page_Load(Object sender, EventArgs e) in d:\webhome\elettromercato.ch\www\usercontrols\SidebarMenu.ascx.cs:line 30
at System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e)
at System.Web.UI.Control.OnLoad(EventArgs e)
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.HandleError(Exception e)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest()
at System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context)
at System.Web.UI.Page.ProcessRequest(HttpContext context)
at ASP.default_aspx.ProcessRequest(HttpContext context) in c:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\6d5b33cc\1348c503\App_Web_default.aspx.cdcab7d2.xbqwfrfc.0.cs:line 0
at System.Web.HttpServerUtility.ExecuteInternal(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage, VirtualPath path, VirtualPath filePath, String physPath, Exception error, String queryStringOverride)
at System.Web.HttpServerUtility.ExecuteInternal(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage, VirtualPath path, VirtualPath filePath, String physPath, Exception error, String queryStringOverride)
at System.Web.HttpServerUtility.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage)
at System.Web.HttpServerUtility.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm)
at System.Web.HttpServerUtilityWrapper.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm)
at Umbraco.Web.Templates.TemplateRenderer.ExecuteTemplateRendering(TextWriter sw, PublishedContentRequest contentRequest)
at Umbraco.Web.Templates.TemplateRenderer.Render(StringWriter writer)
at Umbraco.Web.UmbracoHelper.RenderTemplate(Int32 pageId, Nullable`1 altTemplateId)' -->