Question

我正在构建Windows Phone 8.1 Silverlight应用程序。我可以使用以下注册表：

Windows.Storage.ApplicationData.Current.LocalSettings;

IsolatedStorageSettings.ApplicationSettings;

这两者之间有什么区别？
哪一个更好？

Answer 1

Windows.Storage.ApplicationData.Current.LocalSettings和IsolatedStorageSettings.ApplicationSettings之间的区别在于，第一个是较新的统一Windows应用商店应用API，而后者来自“旧的”Silverlight API。

新的并不总是更好，但我个人认为你应该选择modern version。两者都可以使用Silverlight，但是如果您必须将代码迁移到WinRT，那么由于IsolatedStorageSettings API在WinRT下不起作用，您将节省一些时间。

Answer 2

使用这两种设置存在巨大差异：

IsolatedStorageSettings的工作方式类似于词典，并且已将其序列化并保存到 IsolatedStorageFile ：

IsolatedStorageSettings提供了一种将用户特定数据作为键值对存储在本地IsolatedStorageFile中的便捷方式。

另请注意 IsolatedStorageSettings 必须保存 - IsolatedStorageSettings.Save。保存后，您将在应用程序的独立存储中找到 __ ApplicationSettings 文件。
ApplicationData.LocalSettings是ApplicationDataContainer。一旦你添加了一个值，它就会自动保存。它的模型is conceptually equivalent to the Windows registry。

所以它们完全不同，如果你在上面的设置中添加一个键，那么它就不会自动出现在第二个。考虑两个按钮：

const string firstKey = "firstKey";
const string secondKey = "secondKey";
IsolatedStorageSettings isoSetting = IsolatedStorageSettings.ApplicationSettings;
ApplicationDataContainer localSetting = ApplicationData.Current.LocalSettings;

private void Button_Click(object sender, RoutedEventArgs e)
{
    isoSetting.Add(firstKey, true);
    localSetting.Values[secondKey] = false;
    //isoSetting.Save(); // IsolatedStorageSettings have to be saved

    Debug.WriteLine("Is first key in LocalSettings: {0}", localSetting.Values.ContainsKey(firstKey));
    Debug.WriteLine("Is first key in ApplicationSettings: {0}", isoSetting.Contains(firstKey));
    Debug.WriteLine("Is second key in LocalSettings: {0}", localSetting.Values.ContainsKey(secondKey));
    Debug.WriteLine("Is second key in ApplicationSettings: {0}", isoSetting.Contains(secondKey));
}

private void Button_Click2(object sender, RoutedEventArgs e)
{
    // run this button after app restart without clicking first button
    // and saving IsoSettings
    Debug.WriteLine("Is first key in LocalSettings: {0}", localSetting.Values.ContainsKey(firstKey));
    Debug.WriteLine("Is first key in ApplicationSettings: {0}", isoSetting.Contains(firstKey));
    Debug.WriteLine("Is second key in LocalSettings: {0}", localSetting.Values.ContainsKey(secondKey));
    Debug.WriteLine("Is second key in ApplicationSettings: {0}", isoSetting.Contains(secondKey));
}

如果我正在编写一个新的应用程序，那么我将使用新的 ApplicationData.LocalSettings API - 它更新，将来将这样的应用程序移植到RunTime将会容易得多，因为WP8.1 RT不支持 IsolatedStorageSettings 。

LocalSettings和IsolatedStorageSettings之间的区别

2 个答案: