private static void WriteState(ApplicationState toReturn, Uri uri)
{
using (System.IO.FileStream tmp = System.IO.File.Create(uri.LocalPath))
{
XmlSerializer xs = new XmlSerializer(typeof(ApplicationState));
xs.Serialize(tmp, toReturn);//serialize it and save it
}
}
public static ApplicationState GetLastAppState(string relativePathToAppStateDoc)
{
ApplicationState toReturn = null;
Uri uri = GetUriToAppStateDoc(relativePathToAppStateDoc);
XDocument xmlAppStateDoc = null;
if (System.IO.File.Exists(uri.LocalPath))
{//load it
//TODO: add some schema validation for the document to make sure its properly formatted, etc.
xmlAppStateDoc = XDocument.Load(uri.LocalPath);
//serialize the xml to the appstate to return
XmlSerializer xs = new XmlSerializer(typeof(ApplicationState));
toReturn = xs.Deserialize(xmlAppStateDoc.CreateReader()) as ApplicationState;
}
else
{//first time, lets create it...
if (System.IO.Directory.Exists(uri.LocalPath))
{
//already there, the file is just gone...
}
else
{//make the dir
System.IO.Directory.CreateDirectory(uri.LocalPath.Replace(uri.Segments.Last(), string.Empty));
}
//create a new appstate
toReturn = new ApplicationState(new List<DisplayedStock>());
WriteState(toReturn, uri);
}
return toReturn;
}
public static void SaveCurrentAppState(ApplicationState curState, string relativePathToAppStateDoc)
{
WriteState(curState, GetUriToAppStateDoc(relativePathToAppStateDoc));
}