comboBox1如何赋值的问题

说明一下：comboBox1已经绑定了一个数据源，使comboBox1显示自己想要的字段，并且增加了一个gridcontrol，而gridview中只有id，想要点击gridview的行，获取id，comboBox1再显示对应的名称。

代码如下：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using DevExpress.XtraGrid.Views.BandedGrid;
using DevExpress.XtraGrid.Views.Base;
using System.Linq;
using DevExpress.XtraGrid.Columns;
using DevExpress.XtraEditors.Repository;
using DevExpress.XtraGrid.Views.Grid;

namespace test
{
    public partial class Form3 : Form
    {

        GridView gridview = new GridView();
        
        public Form3()
        {
            InitializeComponent();

            InitGrid();
           
         }

    private void InitGrid()
        {

            //模拟几个数据
             List<ClassNo> listDataSource2 = new List<ClassNo>();
            listDataSource2.Add (new ClassNo (1,1,"计算机班01","备注01"));
            listDataSource2.Add(new ClassNo(2, 2, "计算机班02", "备注02"));
            listDataSource2.Add(new ClassNo(3, 3, "计算机班03", "备注03"));
            listDataSource2.Add(new ClassNo(4, 1, "计算机班 ", "备注01"));
             //绑定数据源并显示
             comboBox1.DataSource = listDataSource2;
            comboBox1.DisplayMember = "Calssno"; //使显示为Calssno字段！
            this.comboBox1.ValueMember = "ID";   //这个是关键~

}

//一下可以按照大家实际的情况来设定。我在这样讲gridview1绑定了另外一个数据源，而数据源中有ClassNOId这个字段。这边我就不写了。
        private void gridview1_Click(object sender, EventArgs e)
        {
            int numnber = gridview1.FocusedRowHandle;

            this.comboBox1.SelectedValue = Int32.Parse(gridview1.GetRowCellValue(numnber, "ClassNOId").ToString ());
        }

 

 

 

        #region 运行时绑定到实现Ilist接口的数据源

       public class ClassNo
        {
            int id,recordId;

            string remark, calssno;
          

            public ClassNo(int id, int   recordId, string calssno, string remark)
            {
                this.id = id;
                this.recordId =recordId ;
                this.calssno = calssno;
                this.remark = remark;
            }
            public int ID { get { return id; } }
            public int RecordId
            {
                get { return recordId; }
                set { recordId = value; }
            }
        
            public string Remark
            {
                get { return remark; }
                set { remark = value; }
            }

            public string Calssno
            {
                get { return calssno ; }
                set { calssno = value; }
            }
  

        }

        #endregion