How to add Data to a WPF datagrid programatically

Question

How can I add data Items to a DataGrid programmatically in WPF which do not have bindings? The DataGrid has 4 columns.

Answer 1

.xaml:

.cs:

public class DataItem
{
    public bool Column1 { get; set; }
    public string Column2 { get; set; }
}

/// 

/// Interaction logic for MainWindow.xaml
/// 
public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
    }

    private void Window_Loaded(object sender, RoutedEventArgs e)
    {
        DataItem item = new DataItem();
        item.Column1 = true;
        item.Column2 = "test";
        dataGrid.Items.Add(item);
    }
}