First of all, the description may be a little long with lots of code, but I wan't to provide with all the information I can. I'm working with tombstoning for my app, and I would like to save a serialized class:
[DataContract]
private class Tombstone
{
[DataMember]
public UserDetails UserProfile { get; set; }
}
// Create instance of the tombstone class
private Tombstone _tombstone;
public ProfileSetup()
{
_tombstone = new Tombstone();
}
//Add data to userProfile
void UserInformationAccess_OnGetUserDetailsComplete(GetUserDetailsResponse response)
{
_tombstone.UserProfile = response.userDetails;
}
And I have the exception in the on navigated from... exactly here:
protected override void OnNavigatedFrom(NavigationEventArgs e)
{
if (_tombstone != null)
this.SaveState("tombstone", _tombstone);
}
//The state manager class
public static class StateManager
{
/// <summary>
/// Saves a key-value pair into the state object
/// </summary>
/// <param name="phoneApplicationPage">The phone application page.</param>
/// <param name="key">The key.</param>
/// <param name="value">The value.</param>
public static void SaveState(this PhoneApplicationPage phoneApplicationPage, string key, object value)
{
if (phoneApplicationPage.State.ContainsKey(key))
{
phoneApplicationPage.State.Remove(key);
}
phoneApplicationPage.State.Add(key, value);
}
}
And now brace yourselves the exception is comming:
"SecurityException" at System.Runtime.Serialization.DataContract.DataContractCriticalHelper.CreateDataContract(Int32 id, RuntimeTypeHandle typeHandle, Type type) at System.Runtime.Serialization.DataContract.DataContractCriticalHelper.GetDataContractSkipValidation(Int32 id, RuntimeTypeHandle typeHandle, Type type) at System.Runtime.Serialization.DataContract.GetDataContractSkipValidation(Int32 id, RuntimeTypeHandle typeHandle, Type type) at System.Runtime.Serialization.DataContract.GetDataContract(RuntimeTypeHandle typeHandle, Type type, SerializationMode mode) at System.Runtime.Serialization.XmlObjectSerializerContext.GetDataContract(RuntimeTypeHandle typeHandle, Type type) at System.Runtime.Serialization.XmlObjectSerializerWriteContext.SerializeWithXsiType(XmlWriterDelegator xmlWriter, Object obj, RuntimeTypeHandle objectTypeHandle, Type objectType, Int32 declaredTypeID, RuntimeTypeHandle declaredTypeHandle, Type declaredType) at System.Runtime.Serialization.XmlObjectSerializerWriteContext.InternalSerialize(XmlWriterDelegator xmlWriter, Object obj, Boolean isDeclaredType, Boolean writeXsiType, Int32 declaredTypeID, RuntimeTypeHandle declaredTypeHandle) at System.Runtime.Serialization.XmlObjectSerializerWriteContext.InternalSerializeReference(XmlWriterDelegator xmlWriter, Object obj, Boolean isDeclaredType, Boolean writeXsiType, Int32 declaredTypeID, RuntimeTypeHandle declaredTypeHandle) at System.Reflection.RuntimeMethodInfo.InternalInvoke(RuntimeMethodInfo rtmi, Object obj, BindingFlags invokeAttr, Binder binder, Object parameters, CultureInfo culture, Boolean isBinderDefault, Assembly caller, Boolean verifyAccess, StackCrawlMark& stackMark) at System.Reflection.RuntimeMethodInfo.InternalInvoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, StackCrawlMark& stackMark) at System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters) at System.Runtime.Serialization.XmlFormatWriter.InternalSerialize(MethodInfo methodInfo, Object memberValue, Type memberType, Boolean writeXsiType, XmlObjectSerializerWriteContext context, XmlWriterDelegator xmlWriter) at System.Runtime.Serialization.XmlFormatWriter.WriteValue(Type memberType, Object memberValue, Boolean writeXsiType, XmlObjectSerializerWriteContext context, XmlWriterDelegator xmlWriter) at System.Runtime.Serialization.XmlFormatWriter.WriteMember(SerializingObject serObj, Int32 memberIndex, ClassDataContract derivedMostClassContract) at System.Runtime.Serialization.XmlFormatWriter.WriteClass(CallStackElement`1 callStackElement) at System.Runtime.Serialization.XmlFormatWriter.Serialize(XmlObjectSerializerWriteContext context) at System.Runtime.Serialization.XmlFormatWriter.InitializeCallStack(XmlWriterDelegator xmlWriterDel, Object obj, XmlObjectSerializerWriteContext writeContext, DataContract contract) at System.Runtime.Serialization.CollectionDataContract.WriteXmlValue(XmlWriterDelegator xmlWriter, Object obj, XmlObjectSerializerWriteContext context) at System.Runtime.Serialization.XmlObjectSerializerWriteContext.WriteDataContractValue(DataContract dataContract, XmlWriterDelegator xmlWriter, Object obj, RuntimeTypeHandle declaredTypeHandle) at System.Runtime.Serialization.XmlObjectSerializerWriteContext.SerializeWithoutXsiType(DataContract dataContract, XmlWriterDelegator xmlWriter, Object obj, RuntimeTypeHandle declaredTypeHandle) at System.Runtime.Serialization.DataContractSerializer.InternalWriteObjectContent(XmlWriterDelegator writer, Object graph) at System.Runtime.Serialization.DataContractSerializer.InternalWriteObject(XmlWriterDelegator writer, Object graph) at System.Runtime.Serialization.XmlObjectSerializer.WriteObjectHandleExceptions(XmlWriterDelegator writer, Object graph) at System.Runtime.Serialization.XmlObjectSerializer.WriteObject(XmlDictionaryWriter writer, Object graph) at System.Runtime.Serialization.XmlObjectSerializer.WriteObject(Stream stream, Object graph) at Microsoft.Phone.Shell.StreamPersister.Serialize(IDictionary`2 dictionary, IEnumerable`1 knownTypes) at Microsoft.Phone.Shell.StreamPersister.Save(ShellPage shellPage, String key, IDictionary`2 dictionary, IEnumerable`1 knownTypes) at Microsoft.Phone.Controls.PhoneApplicationPage.InternalOnNavigatedFrom(NavigationEventArgs e) at System.Windows.Navigation.NavigationService.RaiseNavigated(Object content, Uri uri, NavigationMode mode, Boolean isNavigationInitiator, PhoneApplicationPage existingContentPage, PhoneApplicationPage newContentPage) at System.Windows.Navigation.NavigationService.Journal_NavigatedExternally(Object sender, JournalEventArgs args) at System.Windows.Navigation.Journal.OnNavigatedExternally(String name, Uri uri, NavigationMode mode) at System.Windows.Navigation.Journal.ShellPage_NavigatedAway(Object sender, NavigateAwayEventArgs args) at Microsoft.Phone.Shell.Interop.ShellPageCallback.FireOnNavigateAway(IntPtr thisPage, Direction direction, IntPtr pageNext)
I have researched alot related to this, and I cam out empty :( any help is appreciated.
[EDITS]
Seams like the problem was that the TombStone class has private accessibility, I changed that... but than I got the following exception:
Type 'Newtonsoft.Json.Linq.JObject' with data contract name 'ArrayOfKeyValueOfstringJTokeneJCYCtcq:http://schemas.microsoft.com/2003/10/Serialization/Arrays' is not expected. Add any types not known statically to the list of known types - for example, by using the KnownTypeAttribute attribute or by adding them to the list of known types passed to DataContractSerializer.
also here is the UserDetails class
[KnownType(typeof(Phone[]))]
[KnownType(typeof(UserInterest<InterestCategory?, object>))]
[KnownType(typeof(UserInterest<InterestCategory?, object>[]))]
[DataContract]
public class UserDetails
{
/// <summary>
/// Specifies an identifier of user
/// </summary>
///
[DataMember]
public long userId { get; set; }
/// <summary>
/// Specifies a nick of user
/// </summary>
///
[DataMember]
public string nick { get; set; }
/// <summary>
/// Specifies a full name of user. The field is absent if it has null value
/// </summary>
[JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
[DataMember]
public string fullName { get; set; }
/// <summary>
/// Specifies a gender of user. The field is absent if it has null value
/// </summary>
[JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
[JsonConverter(typeof(EnumAttributeConverter<Gender>))]
[DataMember]
public Gender? gender { get; set; }
/// <summary>
/// Specifies a birthday of user as string in dd.MM.yyyy format.
/// The field is absent if it has null value.
/// </summary>
[JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
[DataMember]
public string birthday { get; set; }
/// <summary>
/// Specifies an e-mail of user. The field is absent if it has null value
/// </summary>
[JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
[DataMember]
public string email { get; set; }
/// <summary>
/// Specifies a website of user. The field is absent if it has null value.
/// </summary>
[JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
[DataMember]
public string website { get; set; }
/// <summary>
/// Specifies a general information about user. The field is absent if it has null value.
/// </summary>
[JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
[DataMember]
public string about { get; set; }
/// <summary>
/// Specifies a place of birth for user. The field is absent if it has null value.
/// </summary>
[JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
[DataMember]
public Address<Country?>? homeAddress { get; set; }
/// <summary>
/// Specifies a place of residence for user. The field is absent if it has null value.
/// </summary>
[JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
[DataMember]
public Address<Country?>? currentAddress { get; set; }
/// <summary>
/// Specifies a list of user's phones. The field is absent if it has null value.
/// </summary>
[JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
[DataMember]
public Phone[] phones { get; set; }
/// <summary>
/// Specifies an URI of avatar of profile. The field is absent if it has null value.
/// </summary>
[JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
[DataMember]
public string avatar { get; set; }
/// <summary>
/// Specifies a job. The field is absent if it has null value.
/// </summary>
[JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
[DataMember]
public string job { get; set; }
/// <summary>
/// Specifies a mood status of user as a color.The field is absent in read commands if it has null value.
/// </summary>
[JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
[DataMember]
public int? mood { get; set; }
/// <summary>
/// Specifies a relationship status of user.The field is absent if it has null value.
/// </summary>
[JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
[DataMember]
public RelationshipStatus? relationshipStatus { get; set; }
/// <summary>
/// Defines a discovery purpose specified by user.The field is absent if it has null value.
/// </summary>
[JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
[DataMember]
public DiscoveryPurpose? discoveryPurpose { get; set; }
/// <summary>
/// Specifies a list of user interests. The field is absent if it has null value.
/// </summary>
[JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
[DataMember]
public UserInterest<InterestCategory?, object>[] interests { get; set; }
/// <summary>
/// Specifies a status of user. The field is absent if it has null value.
/// </summary>
[JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
[DataMember]
public string status { get; set; }
/// <summary>
/// Specifies an availability status of user.
/// </summary>
[JsonConverter(typeof(EnumAttributeConverter<AvailabilityStatus>))]
[DataMember]
public AvailabilityStatus availabilityStatus { get; set; }
/// <summary>
/// Specifies a location of user. The field is absent if location is undefined.
/// </summary>
[JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
[DataMember]
public Location location { get; set; }
/// <summary>
/// Defines if the given user and the requestor interacted previously.
/// </summary>
[JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
[DataMember]
public bool interacted { get; set; }
/// <summary>
/// Defines the status of pending friendship request if it exists.
/// Equals NONE if there is no pending friendship request.
/// Equals PENDING_IN if the given user sent friendship
/// request to the user (requestor) who requests extended
/// information.
/// Equals PENDING_OUT if the requestor sent friendship
/// request to the given request.
/// </summary>
[JsonConverter(typeof(EnumAttributeConverter<FriendshipRequestStatus>))]
[DataMember]
public FriendshipRequestStatus friendshipRequestStatus { get; set; }
/// <summary>
/// Defines if the given user was ignored by the requestor.
/// </summary>
///
[DataMember]
public bool ignored { get; set; }
}
The exception indicates that one of the Types referenced is not accessible / visible in the context of the serializer... The problem is that you defined your class as private:
"private class Tombstone"
This means that it is only visible to the class in which it is defined.
You need to make this class public.