WinForm_ComboBox显示值、实际值

 public partial class Aboutcbo : Form
    {
        public Aboutcbo()
        {
            InitializeComponent();
        }

        private void Aboutcbo_Load(object sender, EventArgs e)
        {
            List<StudentInfo> students = new List<StudentInfo>()
            {
                new StudentInfo() {StuID="001",StuName="张三",StuSex="男",StuAge=15,StuTel="1212121",StuDorm="302"},
                new StudentInfo() {StuID="002",StuName="王五",StuSex="男",StuAge=15,StuTel="1212121",StuDorm="302"},
                new StudentInfo() {StuID="003",StuName="李四",StuSex="男",StuAge=15,StuTel="1212121",StuDorm="302"},
                new StudentInfo() {StuID="004",StuName="刘红",StuSex="女人",StuAge=15,StuTel="1212121",StuDorm="302"}
            };
            this.comboBox1.DisplayMember = "StuName";//设置该属性以显示下拉框列表
            this.comboBox1.ValueMember = "StuID";//该属性为选择的Item实际值
            this.comboBox1.DataSource = students;
            this.comboBox1.SelectedIndex = 0;
        }
        /// <summary>
        /// 下拉框属性更改事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            MessageBox.Show(this.comboBox1.SelectedValue.ToString());
            //001  002  003
        }
    }