public ListScreen()
{
this.InitializeComponent();
this.dbHelper = new DatabaseHelper();
ObservableCollection<Encryption> encryptions = dbHelper.GetEncryptions();
this.lv_crypt.DataContext = encryptions;
if (encryptions.Count == 0)
{
this.tb_empyList.Text = "No value to display";
}
else
{
this.tb_empyList.Text = "";
}
}