/// <summary>
/// Properties Dictionaryから復元する
/// </summary>
protected void LoadAppPreference()
{
if (App.Current.Properties.ContainsKey("AppPreference"))
{
var json = App.Current.Properties["AppPreference"] as string;
Preference = AppPreference.FromJson(json);
}
else
{
Preference = new AppPreference();
}
}
/// <summary>
/// 永続性サポートユーティリティー インスタンス化
/// </summary>
/// <param name="json"></param>
/// <returns></returns>
public static AppPreference FromJson(string json)
{
AppPreference ret = default(AppPreference);
try
{
using (var ms = new MemoryStream(Encoding.UTF8.GetBytes(json)))
{
var ser = new DataContractJsonSerializer(typeof(AppPreference));
ret = (AppPreference)ser.ReadObject(ms);
}
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.ToString());
ret = new AppPreference();
}
return ret;
}
/// <summary>
/// 永続性サポートユーティリティー JSON化
/// </summary>
/// <param name="instance"></param>
/// <returns></returns>
public static string ToJson(AppPreference instance)
{
string ret = null;
try
{
using (var ms = new MemoryStream())
{
var ser = new DataContractJsonSerializer(typeof(AppPreference));
ser.WriteObject(ms, instance);
var bytes = ms.ToArray();
ret = Encoding.UTF8.GetString(bytes, 0, bytes.Length);
}
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.ToString());
}
return ret;
}