TypeMismatchException When Using SpecializedProperties.LinkItem

EthanX

Vote:

I tried to create a LinkItem property in a block, but run into an error on initialization which seems only happen when the property type is not valid.

I am not sure if this exception is expected because I found an article: Backing type for LinkItem?. And it seems that the LinkItem was not working at that time.

However I am using the latest v8.11.0, so I just want to check out if this is still normal in this version and see if there is anything wrong with my Epi instance.

Here is the error shown in browser:

Server Error in '/' Application.

Type 'EPiServer.SpecializedProperties.LinkItem' could not be mapped to a PropertyDefinitionType

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: EPiServer.Core.TypeMismatchException: Type 'EPiServer.SpecializedProperties.LinkItem' could not be mapped to a PropertyDefinitionType

Source Error: 


[No relevant source lines]

Source File: c:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\fdc7017f\5b127880\App_global.asax.0.cs    Line: 0 

Stack Trace: 

[TypeMismatchException: Type 'EPiServer.SpecializedProperties.LinkItem' could not be mapped to a PropertyDefinitionType]
   EPiServer.DataAbstraction.RuntimeModel.PropertyDefinitionSynchronizer.ResolveType(PropertyDefinitionModel model) +438
   EPiServer.DataAbstraction.RuntimeModel.PropertyDefinitionSynchronizer.CreatePropertyDefinition(PropertyDefinitionModel model, Int32 contentTypeID) +270
   EPiServer.DataAbstraction.RuntimeModel.ContentTypeModelRegister.CommitProperties(Boolean deleteUnusedTypes) +407
   EPiServer.DataAbstraction.RuntimeModel.ContentTypeModelScanner.Sync(Boolean commitChanges) +302
   EPiServer.Initialization.ModelSyncInitialization.Initialize(InitializationEngine context) +569
   EPiServer.Framework.Initialization.ModuleNode.Execute(Action a, String key) +64
   EPiServer.Framework.Initialization.InitializationEngine.InitializeModules() +314

[InitializationException: Initialize action failed for Initialize on class EPiServer.Initialization.ModelSyncInitialization, EPiServer, Version=8.11.0.0, Culture=neutral, PublicKeyToken=8fe83dea738b45b7]
   EPiServer.Framework.Initialization.InitializationEngine.InitializeModules() +855
   EPiServer.Framework.Initialization.InitializationEngine.Initialize(HostType hostType) +168
   EPiServer.Framework.Initialization.InitializationModule.Initialize(HostType hostType) +935
   EPiServer.Framework.Initialization.InitializationModule.FrameworkInitialization(HostType hostType) +104
   EPiServer.Global..ctor() +110

[TargetInvocationException: Exception has been thrown by the target of an invocation.]
   System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck) +0
   System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark) +159
   System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark) +256
   System.Activator.CreateInstance(Type type, Boolean nonPublic) +127
   System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes, StackCrawlMark& stackMark) +14297981
   System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes) +198
   System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture) +28
   System.Web.HttpRuntime.CreateNonPublicInstance(Type type, Object[] args) +83
   System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +312
   System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +475

[HttpException (0x80004005): Exception has been thrown by the target of an invocation.]
   System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +12618692
   System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +159
   System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +12458309

#133745

Sep 10, 2015 0:14

henriknystrom

Vote:

Ethan,

This exception is indeed expected as there is currently no built-in property type for LinkItem.

#133747

Sep 10, 2015 1:37

Venkata.Vivid

Vote:

Hi Ethan,

There is no built in property type for link item, however you can create the LinkItem collection and map only one item.

[Display(GroupName = GroupNames.Default, Order = 5, Name = "Quick Links", Description = "Quick Links")]
[CultureSpecific]
public virtual LinkItemCollection QuickLinks { get; set; }

Regards

Venkata Phani kumar R

#133752

Sep 10, 2015 5:38

EthanX

Vote:

Thanks henriknystrom & Venkata,

These are really helpful, it calms my mind that this is not a potential problem. And I am acutally using the solution Venkata suggested, who doesn't like more buttons.

#133811

Sep 10, 2015 15:51

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TypeMismatchException When Using SpecializedProperties.LinkItem