public MainViewModel(UserSettings userSettings, IEnumerable<ClientVersion> clientVersions, IDialogService dialogService)
: base(App.ApplicationName, dialogService)
{
if (userSettings == null)
throw new ArgumentNullException("userSettings");
if (clientVersions == null)
throw new ArgumentNullException("clientVersions");
if (dialogService == null)
throw new ArgumentNullException("dialogService");
this.userSettings = userSettings;
this.clientVersions = clientVersions;
// Create user settings view model
this.userSettingsViewModel = new UserSettingsViewModel(userSettings);
// Create client version view model for each client settings object (via LINQ projection)
var viewModels = from v in clientVersions
orderby v.VersionCode descending
select new ClientVersionViewModel(v);
this.clientVersionViewModels = new ObservableCollection<ClientVersionViewModel>(viewModels);
}