private bool OnApplyingState(string property, ref object value)
{
var handler = ApplyingProperty;
if (handler != null)
{
TrackingOperationEventArgs args = new TrackingOperationEventArgs(this, property, value);
handler(this, args);
value = args.Value;
return(!args.Cancel);
}
else
{
return(true);
}
}
private object OnPersistingState(string property, object value)
{
var handler = PersistingProperty;
if (handler != null)
{
TrackingOperationEventArgs args = new TrackingOperationEventArgs(this, property, value);
handler(this, args);
if (args.Cancel)
{
throw new OperationCanceledException();
}
else
{
return(args.Value);
}
}
return(value);
}