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Accessing the registry in UWP is more difficult. But by comparison, it is more common to use
LocalSettings, here is the document.
Windows.Storage.ApplicationDataContainer localSettings = Windows.Storage.ApplicationData.Current.LocalSettings; // set localSettings.Values["exampleSetting"] = "Hello Windows"; // get Object value = localSettings.Values["exampleSetting"];
You can store user settings this way (you can also provide a default value when you first read the settings).