Question

我在保存游戏方面遇到了问题，而且我花了几个小时搜索解决方案而没有任何运气。我使用了这个代码写在某人的博客中：

public class SaveandLoad
{
    StorageDevice device;
    string containerName = "ChainedWingsContainer";
    string filename = "mysave.sav";
    public struct SaveGame
    {
        public int s_mission;
    }

    public void InitiateSave()
    {
        if (!Guide.IsVisible)
        {
            device = null;
            StorageDevice.BeginShowSelector(PlayerIndex.One, this.SaveToDevice, null);
        }
    }

    void SaveToDevice(IAsyncResult result)
    {
        device = StorageDevice.EndShowSelector(result);
        if (device != null && device.IsConnected)
        {
            SaveGame SaveData = new SaveGame()
            {
                s_mission = Game1.mission,
            };
            IAsyncResult r = device.BeginOpenContainer(containerName, null, null);
            result.AsyncWaitHandle.WaitOne();
            StorageContainer container = device.EndOpenContainer(r);
            if (container.FileExists(filename))
                 container.DeleteFile(filename);
            Stream stream = container.CreateFile(filename);
            XmlSerializer serializer = new XmlSerializer(typeof(SaveGame));
            serializer.Serialize(stream, SaveData);
            stream.Close();
            container.Dispose();
            result.AsyncWaitHandle.Close();
        }
    }

    public void InitiateLoad()
    {
        if (!Guide.IsVisible)
        {
            device = null;
            StorageDevice.BeginShowSelector(PlayerIndex.One, this.LoadFromDevice, null);
        }
    }

    void LoadFromDevice(IAsyncResult result)
    {
        device = StorageDevice.EndShowSelector(result);
        IAsyncResult r = device.BeginOpenContainer(containerName, null, null);
        result.AsyncWaitHandle.WaitOne();
        StorageContainer container = device.EndOpenContainer(r);
        result.AsyncWaitHandle.Close();
        if (container.FileExists(filename))
        {
            Stream stream = container.OpenFile(filename, FileMode.Open);
            XmlSerializer serializer = new XmlSerializer(typeof(SaveGame));
            SaveGame SaveData = (SaveGame)serializer.Deserialize(stream);
            stream.Close();
            container.Dispose();
            //Update the game based on the save game file
            Game1.mission = SaveData.s_mission;
        }
    }
}

但每当我运行它时，我都会收到此消息：

Microsoft.Xna.Framework.Storage.dll中出现未处理的“System.InvalidOperationException”类型异常

附加信息：在此PlayerIndex使用的所有预先容器已被处置之前，无法打开新容器。

我四处寻找答案，大多数建议建议使用Using语句。所以我使用像这样使用：

    void SaveToDevice(IAsyncResult result)
    {
        device = StorageDevice.EndShowSelector(result);
        if (device != null && device.IsConnected)
        {
            SaveGame SaveData = new SaveGame()
            {
                s_mission = Game1.mission,
            };
            IAsyncResult r = device.BeginOpenContainer(containerName, null, null);
            result.AsyncWaitHandle.WaitOne();
            using (StorageContainer container = device.EndOpenContainer(r))
            {
                if (container.FileExists(filename))
                    container.DeleteFile(filename);
                Stream stream = container.CreateFile(filename);
                XmlSerializer serializer = new XmlSerializer(typeof(SaveGame));
                serializer.Serialize(stream, SaveData);
                stream.Close();
                container.Dispose();
            }
            result.AsyncWaitHandle.Close();
        }
    }

但我仍然得到相同的结果。我究竟做错了什么？

Answer 1

此post中的人遇到了同样的问题，这是由于某种异常处理引起的，这种异常处理超出了using语句的范围，导致dispose无法被正确调用。尝试将try语句包装在try catch中。

此外，我发现此post在搜索解决方案时非常有用。

祝你好运。

为什么我不能在XNA中保存我的Xbox 360游戏？

1 个答案: