private void ButtonEdit_Click(object sender, RoutedEventArgs e) { // check we have got a rabbit if (rabbit != null) { if (ButtonEdit.Content.ToString() == "Edit") { // shade the boxes so it's clear we are editing var shader = new SolidColorBrush(Color.FromRgb(249, 238, 169)); TextBoxRabbitName.Background = shader; TextBoxRabbitAge.Background = shader; // make boxes editable TextBoxRabbitName.IsReadOnly = false; TextBoxRabbitAge.IsReadOnly = false; ButtonEdit.Content = "Save"; } // user hits 'save' else { // check name not null if (TextBoxRabbitName.Text.Length > 0) { // find matching rabbit in database using (var db = new RabbitDatabaseEntities()) { Int32.TryParse(TextBoxRabbitAge.Text.ToString(), out int rabbitage); var rabbitToUpdate = db.Rabbits.Find(rabbit.RabbitId); rabbitToUpdate.RabbitName = TextBoxRabbitName.Text; rabbitToUpdate.Age = rabbitage; // update database db.SaveChanges(); // update list ListViewRabbits.ItemsSource = null; rabbits = db.Rabbits.ToList(); ListViewRabbits.ItemsSource = rabbits; } } // put back to default TextBoxRabbitName.Background = Brushes.White; TextBoxRabbitAge.Background = Brushes.White; TextBoxRabbitName.IsReadOnly = true; TextBoxRabbitAge.IsReadOnly = true; ButtonEdit.Content = "Edit"; } } }
private void ButtonAddRabbit_Click(object sender, RoutedEventArgs e) { if (ButtonAddRabbit.Content.ToString() == "Add Rabbit") { // text boxes now become editable TextBoxRabbitName.IsReadOnly = false; TextBoxRabbitAge.IsReadOnly = false; // clear all text boxes TextBoxRabbitId.Text = ""; TextBoxRabbitName.Text = ""; TextBoxRabbitAge.Text = ""; ButtonAddRabbit.Content = "Save"; } else { // save new rabbit to database if (TextBoxRabbitName.Text.Length > 0) { Int32.TryParse(TextBoxRabbitAge.Text, out int rabbitage); var rabbitToAdd = new Rabbit() { RabbitName = TextBoxRabbitName.Text, Age = rabbitage }; // get database into memory (db = local computer copy of database) using (var db = new RabbitDatabaseEntities()) { db.Rabbits.Add(rabbitToAdd); db.SaveChanges(); // update list // firstly set to null ListViewRabbits.ItemsSource = null; // secondsly re-read rabbits afresh from database rabbits = db.Rabbits.ToList(); ListViewRabbits.ItemsSource = rabbits; } } ButtonAddRabbit.Content = "Add Rabbit"; } }
private void ListViewRabbits_MouseRightButtonUp(object sender, MouseButtonEventArgs e) { // must have selected a rabbit if (rabbit != null) { // only open database when needed using (var db = new RabbitDatabaseEntities()) { // find in the database the rabbit which has an ID the same as the selected rabbit var rabbitToDelete = db.Rabbits.Find(rabbit.RabbitId); var result = MessageBox.Show($"Delete Rabbit {rabbit.RabbitId}? Are you sure?", "Rabbit Database", MessageBoxButton.OKCancel); if (result == MessageBoxResult.OK) { db.Rabbits.Remove(rabbitToDelete); db.SaveChanges(); ListViewRabbits.ItemsSource = null; // reset to zero rabbits = db.Rabbits.ToList(); // refresh rabbits from database ListViewRabbits.ItemsSource = rabbits; // refresh view } } } }