Question

我已经使用Desktop Bridge的最新版本（通过Visual Studio 2017中的打包项目）将我的Windows窗体（桌面）应用程序转换为UWP，现在正在测试我的应用程序的UWP安装和升级过程。当我的应用程序通过先前的方法（ClickOnce / .MSI / Windows Installer）部署时，我的用户设置（首选项）在我的应用程序升级到更高版本时已正确迁移和保留。在UWP下，所有用户设置在升级时丢失/重置。我的问题与此主题中描述的问题相同（未提供解决方案）：

Here is the prior thread I found, same issue, no resolution

有关如何正确保存通过桌面桥接到UWP的桌面应用程序的用户设置的任何想法？

谢谢！

Answer 1

将数据存储在ApplicationData.LocalSettings。

中

https://docs.microsoft.com/en-us/windows/uwp/design/app-settings/store-and-retrieve-app-data

Answer 2

您可以将先前的user.config文件加载到当前设置中。这只是一种解决方法，可用于过渡到ApplicationData.LocalSettings。

public static void Init() {
    LoadPreviousSettings(ApplicationSettings.Default, MyFancySettings.Default);
}

private static void LoadPreviousSettings(params ApplicationSettingsBase[] applicationSettings)
{
    const string companyName = "YOUR_COMPANY_NAME_HERE";
    var userConfigXml = GetUserConfigXml(companyName);
    Configuration config = ConfigurationManager.OpenExeConfiguration(
        ConfigurationUserLevel.PerUserRoamingAndLocal);
    foreach (ApplicationSettingsBase setting in applicationSettings)
    {
        try
        {
            // loads settings from user.config into configuration
            LoadSettingSection(setting, config, userConfigXml);
            config.Save(ConfigurationSaveMode.Modified);
            ConfigurationManager.RefreshSection("userSettings");
        }
        catch (FileNotFoundException)
        {
            // Could not import settings.
        }
        setting.Reload();
    }

}

private static void LoadSettingSection(ApplicationSettingsBase setting, Configuration config, XDocument userConfigXml)
{
    string appSettingsXmlName = setting.ToString();
    var settings = userConfigXml.XPathSelectElements("//" + appSettingsXmlName);
    config.GetSectionGroup("userSettings")
        .Sections[appSettingsXmlName]
        .SectionInformation
        .SetRawXml(settings.Single().ToString());
}

private static XDocument GetUserConfigXml(string companyName)
{
    var localPath = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData) + $@"\{companyName}";
    // previous package folder
    var previousLocal = GetDirectoryByWriteTime(localPath, 1);
    // previous version, e.g. 1.2.0
    var prevousVersion = GetDirectoryByWriteTime(previousLocal, 0);
    // application settings for previous version
    return XDocument.Load(prevousVersion + @"\user.config");
}

private static string GetDirectoryByWriteTime(string path, int order)
{
    var direcotires = new DirectoryInfo(path).EnumerateDirectories()
        .OrderBy(d => d.LastWriteTime)
        .Reverse()
        .ToList();
    if (direcotires.Count > order)
    {
        var previous = direcotires[order];
        return previous.FullName;
    }
    throw new FileNotFoundException("Previous config file not found.");
}

通过桌面桥将Windows窗体转换为UWP应用程序 - 用户设置在UWP应用程序升级时丢失/重置

2 个答案: