public void LoadOPC()
{
// Loading, clear existing nodes
this.PeopleCollection.Clear();
try
{
// Use the default path and filename if none were provided
if (string.IsNullOrEmpty(this.FullyQualifiedFilename))
{
this.FullyQualifiedFilename = People.DefaultFullyQualifiedFilename;
}
string tempFolder = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
App.ApplicationFolderName);
tempFolder = Path.Combine(tempFolder, App.AppDataFolderName + @"\");
OPCUtility.ExtractPackage(FullyQualifiedFilename, tempFolder);
XmlSerializer xml = new XmlSerializer(typeof(People));
using (Stream stream = new FileStream(tempFolder + OPCContentFileName, FileMode.Open, FileAccess.Read, FileShare.Read))
{
People pc = (People)xml.Deserialize(stream);
stream.Close();
foreach (Person person in pc.PeopleCollection)
{
this.PeopleCollection.Add(person);
}
// To avoid circular references when serializing family data to xml, only the
// person Id is seralized to express relationships. When family data is loaded,
// the correct person object is found using the person Id and assigned to the
// appropriate relationship.
foreach (Person p in this.PeopleCollection)
{
foreach (Relationship r in p.Relationships)
{
r.RelationTo = this.PeopleCollection.Find(r.PersonId);
}
}
// Set the current person in the list
this.CurrentPersonId = pc.CurrentPersonId;
this.CurrentPersonName = pc.CurrentPersonName;
this.PeopleCollection.Current = this.PeopleCollection.Find(this.CurrentPersonId);
}
this.PeopleCollection.IsDirty = false;
return;
}
catch
{
// Could not load the file. Handle all exceptions the same, ignore and continue.
this.fullyQualifiedFilename = string.Empty;
}
}
/// <summary>
/// Persist the current list of people to disk.
/// </summary>
public void Save()
{
// Return right away if nothing to save.
if (this.PeopleCollection == null || this.PeopleCollection.Count == 0)
{
return;
}
// Set the current person id and name before serializing
this.CurrentPersonName = this.PeopleCollection.Current.FullName;
this.CurrentPersonId = this.PeopleCollection.Current.Id;
// Use the default path and filename if none was provided
if (string.IsNullOrEmpty(this.FullyQualifiedFilename))
{
this.FullyQualifiedFilename = People.DefaultFullyQualifiedFilename;
}
// Setup temp folders for this family to be packaged into OPC later
string tempFolder = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
App.ApplicationFolderName);
tempFolder = Path.Combine(tempFolder, App.AppDataFolderName);
// Create the necessary directories
Directory.CreateDirectory(tempFolder);
// Create xml content file
XmlSerializer xml = new XmlSerializer(typeof(People));
using (Stream stream = new FileStream(Path.Combine(tempFolder, OPCContentFileName), FileMode.Create, FileAccess.Write, FileShare.None))
{
xml.Serialize(stream, this);
}
// save to file package
OPCUtility.CreatePackage(FullyQualifiedFilename, tempFolder);
this.PeopleCollection.IsDirty = false;
}