void DisposeOldApps()
{
List <DemoAppRegistryEntry> appEntries = AppDictionary.Values.ToList();
DateTime timeLowerBoundary = DateTime.UtcNow.Subtract(AppDisposeTimeout);
foreach (DemoAppRegistryEntry appEntry in appEntries)
{
if (appEntry.LastAccessTime <= timeLowerBoundary)
{
DemoAppRegistryEntry removedEntry;
AppDictionary.TryRemove(appEntry.DemoApp.Id, out removedEntry);
appEntry.DemoApp.Dispose();
}
}
}
