如何通過applicationsettingsbase重新加載不同的對象？

Question

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

在SettingsSaving中，將TestASettings和TestBSettings序列化為兩個單獨的字節數組，然后保存（在某些其他函數中）

我的問題是如何從loadavedsettings中的TestASettingsString和TestASettingsString中分別恢復TestASettings和TestBSettings？

那就是我做formatter.Deserialize（stream）;的時候。

如何將兩個完全不同的對象TestASettings和TestBSettings與formatter.Deserialize（stream）分開？

謝謝

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

我懷疑部分問題在這里：

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

對於MemoryStream ， Flush()是無操作的。 您實際上是說：

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

哪個將重置流，將TestBSettingsString作為單獨的數據塊提供？ 當前， TestBSettingsString實際上包含TestASettings和TestBSettings 。

完成此操作后，應該只是扭轉情況：

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);
}

另請注意：我建議不要使用BinaryFormatter持久存儲任何離線內容（磁盤，數據庫等）。

Answer 2

反序列化它們需要如下代碼：

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

其中，TestAClass是TestASettings的類型。 您需要在序列化代碼中重置流，將Position設置回0。