public void RestoreState(IDictionary <string, object> storedState)
{
object stateAsString;
Dictionary <string, object> collections;
if (storedState.TryGetValue("DataServiceState", out stateAsString))
{
var dsState = DataServiceState.Deserialize((string)stateAsString);
this._context = dsState.Context as OratorEntities;
collections = dsState.RootCollections;
if (collections != null)
{
if (collections.ContainsKey("Events"))
{
this.Events = collections["Events"] as DataServiceCollection <Event>;
if (collections.ContainsKey("Sessions"))
{
this.Sessions = collections["Sessions"] as DataServiceCollection <Session>;
if (collections.ContainsKey("Speakers"))
{
this.Speakers = collections["Speakers"] as DataServiceCollection <SessionSpeaker>;
}
if (collections.ContainsKey("SessionFiles"))
{
this.SessionFiles = collections["SessionFiles"] as DataServiceCollection <SessionFile>;
}
}
}
}
// Restore entity properties from the stored URI.
_context.TryGetEntity <Session>(storedState["CurrentSession"] as Uri, out _currentSession);
_context.TryGetEntity <Event>(storedState["CurrentEvent"] as Uri, out _currentEvent);
_context.TryGetEntity <SessionSpeaker>(storedState["SingleSpeaker"] as Uri, out _singleSpeaker);
// Restore other non-entity properties.
this.TotalSessionCount = (int)storedState["TotalSessionCount"];
this.Message = (string)storedState["Message"];
this.CountMessage = (string)storedState["CountMessage"];
this.QueryInfo = (QueryHelper)storedState["QueryInfo"];
this.SessionCategories = (List <string>)storedState["SessionCategories"];
this.SessionDates = (List <string>)storedState["SessionDates"];
this.SessionTracks = (List <string>)storedState["SessionTracks"];
}
}
// Define a base paged LINQ query for sessions.
//DataServiceQuery<Session> sessionsQuery;
public MainViewModel()
{
// Instantiate the context and binding collection.
_context = new OratorEntities(_rootUri);
}
