//Show a form for adding a new rule.
private void btnAddGrammar_Click(object sender, RoutedEventArgs e)
{
AddGrammar frm = new AddGrammar(_proxy);
frm.ShowDialog();
btnGrammar_Click(null, null);
}
//Show a form for editting the book.
private void btnEditGrammar_Click(object sender, RoutedEventArgs e)
{
int id = Convert.ToInt32((sender as Button).Tag);
AddGrammar form = new AddGrammar(_proxy, id);
form.ShowDialog();
btnGrammar_Click(null, null);
}
