private async void CreateCases_Click(object sender, RoutedEventArgs e)
        {
            await SqliteContext.CreateCaseAsync(
                new Case
            {
                Title       = TbTitle.Text,
                Description = TbDescription.Text,
                CustomerId  = await SqliteContext.GetCustomerIdByName(cmbCustomers.SelectedItem.ToString())
            });

            await LoadCasesAsync();
        }