public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            List<Source> list = new List<Source>();
            list.Add(new Source
            {
                ID = "1",
                Name = "kobe"
            });
            list.Add(new Source
            {
                ID = "2",
                Name = "JORDAN"
            });
            this.comboBox1.DisplayMember = "Name";
            this.comboBox1.ValueMember = "ID";
            this.comboBox1.DataSource = list;

            this.comboBox2.DisplayMember = "Name";
            this.comboBox2.ValueMember = "ID";
            this.comboBox2.DataSource = list;
        }
    }
    public class Source
    {
        public string ID { get; set; }
        public string Name { get; set; }
    }

（选择后）为什么combox1变化后。。combox2跟着变化？？？？高手请教！！！...