System.Web.HttpException (0x80004005): Errore durante l'esecuzione della richiesta figlio per /Layouts/lay_iscrizione_eventi.aspx. ---> System.Web.HttpUnhandledException (0x80004005): Generata eccezione di tipo 'System.Web.HttpUnhandledException'. ---> System.InvalidOperationException: L'oggetto nullable deve avere un valore. in System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource) in System.Nullable`1.get_Value() in ASP.layouts_lay_iscrizione_eventi_aspx.__Render__control1(HtmlTextWriter __w, Control parameterContainer) in d:\inetpub\wwwroot\whynet\villabonin2018\layouts\lay_iscrizione_eventi.aspx:riga 99 in System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) in System.Web.UI.Page.Render(HtmlTextWriter writer) in System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) in System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) in System.Web.UI.Page.HandleError(Exception e) in System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) in System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) in System.Web.UI.Page.ProcessRequest() in System.Web.UI.Page.ProcessRequest(HttpContext context) in ASP.layouts_lay_iscrizione_eventi_aspx.ProcessRequest(HttpContext context) in c:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\3b39c5e2\2d334853\App_Web_te24zuam.0.cs:riga 0 in System.Web.HttpServerUtility.ExecuteInternal(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage, VirtualPath path, VirtualPath filePath, String physPath, Exception error, String queryStringOverride) in System.Web.HttpServerUtility.ExecuteInternal(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage, VirtualPath path, VirtualPath filePath, String physPath, Exception error, String queryStringOverride) in System.Web.HttpServerUtility.Execute(String path, TextWriter writer, Boolean preserveForm) in crossPublisher.WebApp.Include(String sPagina, String qString)