如何通过applicationsettingsbase重新加载不同的对象？

Question

// TestASettingsString and TestBSettingsString are byte[]
// TestASettings and TestBSettings are two objects to be saved

在SettingsSaving中，TestASettings和TestBSettings被序列化为两个独立的字节数组，然后保存(在其他函数中)

我的问题是如何在加载保存的设置中分别从TestASettingsString和TestASettingsString恢复TestASettings和TestBSettings？

这就是我做formatter.Deserialize(流)的时候；

如何将两个完全不同的对象TestASettings和TestBSettings从formatter.Deserialize(流)中分离出来？

谢谢

private void SettingsSaving(object sender, CancelEventArgs e)
    {

        try
        {
            var stream = new MemoryStream();
            var formatter = new BinaryFormatter();
            formatter.Serialize(stream, TestASettings);
    // TestASettingsString and TestBSettingsString are byte[]
            TestASettingsString = stream.ToArray();

            stream.Flush();
            formatter.Serialize(stream, TestBSettings);
            TestBSettingsString = stream.ToArray();   

            stream.Close();
        }
        catch (Exception ex)
        {
            Debug.WriteLine(ex);
        }
    }





private void LoadSavedSettings()
    {
        Reload();
        // how to get TestASettings and TestBSettings from TestASettingsString  and
        // TestASettingsString seperately?
    }

Answer 1

我怀疑问题的一部分在这里：

        TestASettingsString = stream.ToArray();
        stream.Flush();
        formatter.Serialize(stream, TestBSettings);
        TestBSettingsString = stream.ToArray();  

对于MemoryStream来说，Flush()是一个不可操作的东西。你的实际意思是：

        TestASettingsString = stream.ToArray();
        stream.SetLength(0);
        formatter.Serialize(stream, TestBSettings);
        TestBSettingsString = stream.ToArray();  

哪一项将重置流，将TestBSettingsString作为单独的数据块？目前，TestBSettingsString实际上同时包含TestASettings和TestBSettings。

完成后，应该只是一个反转的例子：

using(MemoryStream ms = new MemoryStream(TestASettingsString)) {
    BinaryFormatter bf = new BinaryFormatter();
    TestASettings = (WhateverType)bf.Deserialize(ms);
}
using(MemoryStream ms = new MemoryStream(TestBSettingsString)) {
    BinaryFormatter bf = new BinaryFormatter();
    TestBSettings = (WhateverOtherType)bf.Deserialize(ms);
}

另请注意:我建议使用而不是使用BinaryFormatter来持久化任何离线的东西(磁盘、数据库等)。

Answer 2

反序列化它们需要像这样的代码：

var ms = new MemoryStream(TestASettingsString);
var fmt = new BinaryFormatter();
TestASettings = (TestAClass)fmt.Deserialize(ms);

其中TestAClass是TestASettings的类型。您需要在序列化代码中重置流，将位置设置回0。