private void Delete_selected_rows(object sender, RoutedEventArgs e)
{
foreach (CurrencyRow row in this.available_rows.Where(row => row.Selected == true).ToList())
{
if (row.Currency_name != "USD")
{
DatabaseHandler.Delete_row_from_currencies(GlobalVariables.temporary_file_path, row.Id);
}
}
this.Set_rows();
}
