I had a problem described by @Aviv in this post: http://www.devtrends.co.uk/blog/donut-output-caching-in-asp.net-mvc-3#125
I searched for the error here and Codeplex , but could not find it.
Medium Trust Environment!
Route
public static void RegisterRoutes(RouteCollection routes) { routes.IgnoreRoute("{resource}.axd/{*pathInfo}"); routes.IgnoreRoute("{*favicon}", new { favicon = @"(.*/)?favicon.ico(/.*)?" }); routes.IgnoreRoute("elmah.axd"); routes.MapRoute( "Default", // Route name "{controller}/{action}/{id}", // URL with parameters new { controller = "Home", action = "Index", id = UrlParameter.Optional }, // Parameter defaults new[] { "LetsGo.Controllers" } ); }
Controller
[DonutOutputCache(CacheProfile = "StaticPage")] public ActionResult Index() { return View(_themeParty.Repository.Query().Published(true).ToList()); } [ChildActionOnly] [DonutOutputCache(CacheProfile = "DataCache")] public PartialViewResult Subsidiaries() { return PartialView(_subsidiaries.Repository.Query().Published().ToList()); }
Web.config
<caching> <outputCacheSettings> <outputCacheProfiles> <add name="DataCache" enabled="true" duration="10800" varyByParam="*" /> <add name="StaticPage" enabled="true" duration="21600" varyByParam="*" /> <add name="ByHeader" enabled="true" duration="300" varyByHeader="*" /> </outputCacheProfiles> </outputCacheSettings> </caching>
_Layout.cshtml
... @Html.Action("Subsidiaries", "Home", new { area = "" }) ...
Complete mistake
Server Error in '/LetsGo' 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: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [NullReferenceException: Object reference not set to an instance of an object.] DevTrends.MvcDonutCaching.KeyGenerator.GenerateKey(ControllerContext context, CacheSettings cacheSettings) +777 DevTrends.MvcDonutCaching.DonutOutputCacheAttribute.ExecuteCallback(ControllerContext context, Boolean hasErrors) +43 System.Web.Mvc.ControllerActionInvoker.InvokeExceptionFilters(ControllerContext controllerContext, IList`1 filters, Exception exception) +168 System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +652 System.Web.Mvc.Controller.ExecuteCore() +161 System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +304 System.Web.Mvc.<>c__DisplayClassb.<BeginProcessRequest>b__5() +61 System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +19 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +461 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +370 Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.272
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