private Settings DeserializeSettings(string data)
{
Settings settings;
try
{
var ser = new DataContractSerializer(typeof(Settings));
using (var sr = new StringReader(data))
using (var xr = XmlReader.Create(sr))
settings = (Settings)ser.ReadObject(xr);
}
catch
{
settings = new Settings() { Version = -1 };
}
return settings;
}
private string SerializeSettings(Settings settings)
{
string data;
var ser = new DataContractSerializer(typeof(Settings));
using (var stream = new MemoryStream())
{
ser.WriteObject(stream, settings);
stream.Position = 0;
using (var reader = new StreamReader(stream))
{
data = reader.ReadToEnd();
}
}
return data;
}
/// <summary>
/// load the settings and all the feed data from isolated storage
/// </summary>
public void LoadState(bool forceRefresh = false)
{
IsBusy = true;
if (forceRefresh)
{
settings = GetSettingsFromConfigFile();
InitializeProperties();
}
else
{
var isoData = IsoHelper.LoadIsoString(ISO_STORE_FILE);
if (isoData == null || isoData.Length == 0)
{
settings = GetSettingsFromConfigFile();
InitializeProperties();
}
else
{
var configSettings = GetSettingsFromConfigFile();
var isoSettings = DeserializeSettings(isoData);
if (isoSettings.Version < configSettings.Version)
{
settings = configSettings;
InitializeProperties();
}
else
{
settings = isoSettings;
InitializeProperties();
}
}
}
IsBusy = false;
}
