public static void PersistDeviceCodeHistory(DeviceCodeHistory codeHistory)
{
lock (codeHistory)
{
Stream stream = null;
try
{
IFormatter formatter = new BinaryFormatter();
stream = new FileStream(codeHistory.Filename, FileMode.OpenOrCreate, FileAccess.Write, FileShare.None);
formatter.Serialize(stream, codeHistory);
CNXLog.WarnFormat("Persisted DeviceCodeHistory {0}.", codeHistory.ToString());
}
catch (Exception e)
{
CNXLog.Error("PersistDeviceCodeHistory", e);
}
finally
{
if (null != stream)
{
stream.Flush();
stream.Close();
}
}
}
}
public static DeviceCodeHistory CreateDeviceCodeHistory(string filename)
{
DeviceCodeHistory dch = null;
Stream stream = null;
// load existing codes
try
{
IFormatter formatter = new BinaryFormatter();
stream = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.None);
dch = (DeviceCodeHistory)formatter.Deserialize(stream);
CNXLog.WarnFormat("CreateDeviceCodeHistory : from ({0}), {1}.", filename, dch.ToString());
}
catch (FileNotFoundException)
{
CNXLog.WarnFormat("CreateDeviceCodeHistory : Could not open persistent storage ({0}), Creating a new one.", filename);
}
catch (Exception e)
{
CNXLog.Error("CreateDeviceCodeHistory", e);
}
finally
{
if (null != stream)
{
stream.Close();
}
}
// may have a failure or no persitant store
if (dch == null)
{
dch = new DeviceCodeHistory();
}
dch.Filename = filename;
return(dch);
}