Grouping items in a ComboBox

Question

I have a ListView that contains two types of objects, single and multiple. The single is a ordinary TextBlock while the multiple is a ComboBox with items.

I\'m tryin

Answer 1

It is possible. Use a ListCollectionView with a GroupDescription as the ItemsSource and just provide a GroupStyle to your ComboBox. See sample below:

XAML:

Code-behind:

namespace StackOverflow
{
    /// 

    /// Interaction logic for MainWindow.xaml
    /// 
    public partial class MainWindow : Window
    {

        public MainWindow()
        {
            InitializeComponent();
            //this.comboBox.DataContext = this;

            List items = new List();
            items.Add(new Item() { Name = "Item1", Category = "A" });
            items.Add(new Item() { Name = "Item2", Category = "A" });
            items.Add(new Item() { Name = "Item3", Category = "A" });
            items.Add(new Item() { Name = "Item4", Category = "B" });
            items.Add(new Item() { Name = "Item5", Category = "B" });

            ListCollectionView lcv = new ListCollectionView(items);
            lcv.GroupDescriptions.Add(new PropertyGroupDescription("Category"));

            this.comboBox.ItemsSource = lcv;
        }


    }

    public class Item
    {
        public string Name { get; set; }
        public string Category { get; set; }
    }

}