private void button_Click(object sender, RoutedEventArgs e)
 {
     try
     {
         bl.deleteChild(int.Parse(textBox.Text));
     }
     catch (Exception Ex)
     {
         MessageBox.Show(Ex.Message);
     }
 }
 private void buttonDeleteChild_Click(object sender, RoutedEventArgs e)
 {
     try
     {
         bl.deleteChild(Convert.ToInt64(comboBoxChild.SelectedValue));
         MessageBox.Show("הילד/ה נמחק/ה בהצלחה");
         comboBoxChild.SelectedIndex     = -1;
         comboBoxMomDelete.SelectedIndex = -1;
     }
     catch (Exception Ex)
     {
         MessageBox.Show(Ex.Message);
     }
 }