I'm trying to serialize the state of my game on Windows Phone 7, and so made a "Save" struct so I could easily convert all the states into an XML doc using DataContractSerializer. The Save() code worked fine when I just serialized each data member of the Gamestate individually. However this led to a multiple xml root error, so I made the "Save" class to act as the sole root. Now I get a security exception whenever I try and call DataContractSerializer.WriteObject() on anything. I've been comparing my old and new code but just can't find anything wrong.
I've pasted all my code below in case the problem lies outside the Save() method.
Just look at the Save() method first since Exception Details:
Stack Trace:\[code\] 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.DataContract.GetDataContract(RuntimeTypeHandle typeHandle, Type type) at System.Runtime.Serialization.DataContract.GetDataContract(Type type) at System.Runtime.Serialization.DataContractSerializer.get_RootContract() at System.Runtime.Serialization.DataContractSerializer.InternalWriteStartObject(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 GameState_test.GameState.Save(String filename) at GameState_test.MainPage.SaveButton_Click(Object sender, RoutedEventArgs e) at System.Windows.Controls.Primitives.ButtonBase.OnClick() at System.Windows.Controls.Button.OnClick() at System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs e) at System.Windows.Controls.Control.OnMouseLeftButtonUp(Control ctrl, EventArgs e) at MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName)\[/code\]NEW CODE:\[code\] namespace GameState_test { //TODO: Find a way to not have this ignored [DataContract] public class Hazard { [IgnoreDataMember] public Planet CurrentPlanet;} public class Connections { public Connections(List<List<int>> connections = null) { this.cons = connections; } public bool AreConnected(int Planet1, int Planet2) { for (int i = 0; i < cons[Planet1].Count; i++) if (cons[Planet1] == Planet2) return true; return false; } public List<int> this [int index] { get { return cons[index]; } } internal readonly List<List<int>> cons; //internal so it can be read by serializer } [DataContract] public class GameState { public GameState(List<List<int>> connections) { this.Connections = new Connections(connections); } public GameState(Position pos, List<List<int>> con) { Position = pos; Connections = new Connections(con); } public GameState(string filename) //load a game { using (IsolatedStorageFile store = IsolatedStorageFile.GetUserStoreForApplication()) { if (!store.DirectoryExists("SavedGames")) store.CreateDirectory("SavedGames"); using (IsolatedStorageFileStream stream = store.OpenFile("SavedGames/" + filename + ".xml", System.IO.FileMode.Open, System.IO.FileAccess.Read)) { DataContractSerializer serializer = new DataContractSerializer(typeof(GameStateSave), new List<Type> {typeof(Hazard), typeof(Inventory), typeof(List<List<int>>), typeof(List<Planet>), typeof(Planet) }); GameStateSave Save = (GameStateSave)serializer.ReadObject(stream); Position position = new Position(Save.planets, Save.connections, Save.playerPosition); this.Position = position; this.PlayerInventory = Save.playerInventory; this.Connections = new Connections(Save.connections); } } } [DataMember] public readonly Connections Connections; [DataMember] public Position Position; [DataMember] public Inventory PlayerInventory; public void Save(string filename) { using (IsolatedStorageFile store = IsolatedStorageFile.GetUserStoreForApplication()) { if (!store.DirectoryExists("SavedGames")) store.CreateDirectory("SavedGames"); using (IsolatedStorageFileStream stream = store.OpenFile("SavedGames/" + filename + ".xml", System.IO.FileMode.OpenOrCreate, System.IO.FileAccess.Write)) { DataContractSerializer serializer = new DataContractSerializer(typeof (GameStateSave), new List<Type> {typeof(Hazard), typeof(Inventory), typeof(List<List<int>>), typeof(List<Planet>), typeof(Planet)} ); GameStateSave Save = GenerateSave(); serializer.WriteObject(stream, Save); //NOTE: Even when I comment everything out but this, I still get an exception: //serializer.WriteObject(stream, this.Position.Player); } } } private GameStateSave GenerateSave() { GameStateSave Save = new GameStateSave(); Save.connections = this.Connections.cons; Save.playerInventory = this.PlayerInventory; Save.planets = this.Position.Planets; Save.playerPosition = this.Position.Player; return Save; } } [DataContract] internal struct GameStateSave //only to be used here { [DataMember] public List<List<int>> connections; [DataMember] public Inventory playerInventory; [DataMember] public List<Planet> planets; [DataMember] public int playerPosition; } }\[/code\]OLD CODE:\[code\]namespace GameState_test{ [DataContract] public class Hazard { [IgnoreDataMember] public Planet CurrentPlanet;} public class Connections { public Connections(List<List<int>> connections = null) { this.cons = connections; } public bool AreConnected(int Planet1, int Planet2) { for (int i = 0; i < cons[Planet1].Count; i++) if (cons[Planet1] == Planet2) return true; return false; } public List<int> this [int index] { get { return cons[index]; } } internal readonly List<List<int>> cons; //internal so it can be read by serializer } [DataContract] public class GameState { public GameState(List<List<int>> connections) { this.Connections = new Connections(connections); } public GameState(Position pos, List<List<int>> con) { Position = pos; Connections = new Connections(con); } public GameState(string filename) { //load a game using (IsolatedStorageFile store = IsolatedStorageFile.GetUserStoreForApplication()) { if (!store.DirectoryExists("SavedGames")) store.CreateDirectory("SavedGames"); using (IsolatedStorageFileStream stream = store.OpenFile("SavedGames/" + filename + ".xml", System.IO.FileMode.Open, System.IO.FileAccess.Read)) { DataContractSerializer serializer = new DataContractSerializer(typeof(Hazard), new List<Type> { typeof(Inventory), typeof(List<List<int>>), typeof(List<Planet>), typeof(Planet) }); List<List<int>> Connections = (List<List<int>>) serializer.ReadObject(stream); Inventory PlayerInventory = (Inventory) serializer.ReadObject(stream); List<Planet> Planets = (List<Planet>) serializer.ReadObject(stream); int PlayerPosition = (int)serializer.ReadObject(stream); Position position = new Position(Planets, Connections, PlayerPosition); this.Position = position; this.PlayerInventory = PlayerInventory; this.Connections = new Connections(Connections); } } } [DataMember] public readonly Connections Connections; [DataMember] public Position Position; [DataMember] public Inventory PlayerInventory; public void Save(string filename) { using (IsolatedStorageFile store = IsolatedStorageFile.GetUserStoreForApplication()) { if (!store.DirectoryExists("SavedGames")) store.CreateDirectory("SavedGames"); using (IsolatedStorageFileStream stream = store.OpenFile("SavedGames/" + filename + ".xml", System.IO.FileMode.OpenOrCreate, System.IO.FileAccess.Write)) { DataContractSerializer serializer = new DataContractSerializer(typeof (Hazard), new List<Type> {typeof(Inventory), typeof(List<List<int>>), typeof(List<Planet>), typeof(Planet)} ); serializer.WriteObject(stream, this.Connections.cons); serializer.WriteObject(stream, this.PlayerInventory); serializer.WriteObject(stream, this.Position.Planets); serializer.WriteObject(stream, this.Position.Player); } } } internal class SerializableGameState //only to be used here { public List<List<int>> connections; public Inventory playerInventory; public List<Planet> planets; public int playerPosition; } }}\[/code\]
I've pasted all my code below in case the problem lies outside the Save() method.
Just look at the Save() method first since Exception Details: