public MainViewModel()
{
this.AddAttachementCommand = new RelayCommand(AddAttachement);
this.AddWrapperCommand = new RelayCommand(AddWrapper);
this.RemoveAttachementCommand = new RelayCommand <string>(RemoveAttachement);
this.LogoutCommand = new RelayCommand(Logout);
this.LoginCommand = new RelayCommand(Login);
this._attachements = new ObservableCollection <Attachement>();
var beginGetUserResult = _authCreds.BeginGetUser();
this.LoggedInUser = _authCreds.EndGetUser(beginGetUserResult);
Attachements.CollectionChanged += (sender, e) => RaisePropertyChanged(nameof(Attachements));
}
