WPF Add Or Delete Rows In A DataGrid Using Observable Collection

Here's a simple way of adding/deleting WPF Datagrid rows using observable collection.
XAML Code

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<DataGrid AutoGenerateColumns="False" ItemsSource="{Binding}" Margin="12,12,12,41" Name="dataGrid1" CanUserResizeRows="False" CommandManager.PreviewExecuted="UserDataGrid_PreviewDeleteCommandHandler" RowEditEnding="dataGrid1_RowEditEnding" RowHeaderWidth="20"> <DataGrid.Columns> <DataGridTextColumn Binding="{Binding UserName, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" Header="User name" Width="230"> </DataGridTextColumn> <DataGridTextColumn Binding="{Binding FirstName, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" Header="First Name" Width="245"> </DataGridTextColumn> </DataGrid.Columns> </DataGrid>

C# Code

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public partial class MainWindow : Window { private ObservableCollection<User> users = new ObservableCollection<User>(); private StringBuilder builder; public ObservableCollection<User> AllUsers { get { return users; } set { users = value; } } private void Window_Loaded_1(object sender, RoutedEventArgs e) { } public MainWindow() { InitializeComponent(); users.Add(new User() { UserName = "Walter", FirstName = "Walter North" }); dataGrid1.ItemsSource = AllUsers; AllUsers.CollectionChanged += AllUsers_CollectionChanged; } private void dataGrid1_RowEditEnding(object sender, DataGridRowEditEndingEventArgs e) { // Get Items From Source builder = new StringBuilder(); if (e.EditAction == DataGridEditAction.Commit) { foreach (object item in AllUsers) { if (item.GetType().Equals(typeof(User))) builder.AppendLine(String.Format("{0},{1}", ((User)item).UserName, ((User)item).FirstName)); } MessageBox.Show(String.Format("{0}",builder.ToString()), "Items in collection!"); } } private void UserDataGrid_PreviewDeleteCommandHandler(object sender, ExecutedRoutedEventArgs e) { if (e.Command == DataGrid.DeleteCommand) { if (!(MessageBox.Show(String.Format("Delete Current Item {0} ?", ((User)((DataGrid)sender).CurrentItem).UserName), "Please confirm.", MessageBoxButton.YesNo) == MessageBoxResult.Yes)) { e.Handled = true; // Cancel Delete. } } } private void AllUsers_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e) { // If action is remove, show current collection if (e.Action == NotifyCollectionChangedAction.Remove) { builder = new StringBuilder(); foreach (var item in AllUsers) { builder.AppendLine(String.Format("{0},{1}", ((User)item).UserName, ((User)item).FirstName)); } MessageBox.Show(String.Format("{0}", builder.ToString()), "Items in collection!"); } } }

Screenshot