Use of the WPF control in ComboBox

The following is a simple and practical example of ComboBox.

XAML:

   <Grid>        <ComboBox Height="23" Margin="12,12,0,0" Name="comboBox1" VerticalAlignment="Top" HorizontalAlignment="Left" Width="120" />        <Button Height="23" Margin="21,53,69,0" Name="button1" VerticalAlignment="Top" Click="button1_Click">Get ComboBox select value</Button>    </Grid>

C # code:

    public partial class ComboBoxTest : Window    {        public ComboBoxTest()        {            InitializeComponent();            Bind();        }        public void Bind()        {            IList<customer> customList = new List<customer>();            customList.Add(new customer() { ID = 3, Name = "Tom" });            customList.Add(new customer() { ID = 4, Name = "Bob" });            customList.Add(new customer() { ID = 5, Name = "Cat" });            comboBox1.ItemsSource = customList;            comboBox1.DisplayMemberPath = "Name";            comboBox1.SelectedValuePath = "ID";            comboBox1.SelectedValue = 4;        }        private void button1_Click(object sender, RoutedEventArgs e)        {            MessageBox.Show(comboBox1.SelectedValue.ToString());        }    }    public class customer    {        public int ID{ get; set;}        public string Name { get; set; }    }