namespace WpfApplication1
{
    public class recSet
    {
        public string Name { get; set; }
        public string Number { get; set; }

        public recSet(string na, string num)
        {
            Name = na;
            Number = num;
        }
    }

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

            //create the list
            List<recSet> tmp = new List<recSet>();

            tmp.Add(new recSet("mark", "0123456789"));
            tmp.Add(new recSet("bob", "4578954425"));
            tmp.Add(new recSet("joe", "4587521665"));

            //bing the list to the combobox
            comboBox1.ItemsSource = tmp;

		//bind the properties
            comboBox1.DisplayMemberPath = "Name";
            comboBox1.SelectedValuePath = "Number";

            //default first element select
            comboBox1.SelectedIndex = 0;
        }
    }
}