如何在DataGrid中添加AutoIncrease的列

using System;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
namespace yinzx
{
    public class DemoAutoIncreaseRowID:Form
    {
        [STAThread]
        public static void Main() 
        {
            Application.Run(new DemoAutoIncreaseRowID());
        }
        public DemoAutoIncreaseRowID()
        {
            //设置连接字符串及查询语句
            string strCnn = "User ID=sa;Password=zhang;Data Source=zzy;Initial Catalog=pubs";
            string strSql = "Select fname,lname From employee";
            SqlDataAdapter da = new SqlDataAdapter(strSql,strCnn);

            //获取Employee表的结构(Schema)
            DataSet ds = new DataSet();
            da.FillSchema(ds,SchemaType.Source,"Employee");
            DataTable t = ds.Tables["Employee"];

            //在原有表结构的基础上加入一个列，用来保存自动增加的列号
            DataColumn c = t.Columns.Add("RowID",typeof(int));
            c.AutoIncrement = true;
            c.AutoIncrementSeed = 1;
            c.AutoIncrementStep = 1;

            //填充数据到DataSet中,并设置RowFilter
            da.Fill(ds,"Employee");
            DataView dv = new DataView(t);
            dv.RowFilter = "RowID >10 And RowID<20";

            //将数据绑定到DataGrid上
            DataGrid grd = new DataGrid();
            this.Controls.Add(grd);
            grd.Dock = DockStyle.Fill;
            grd.DataSource = dv;
        }
    }
}

参考资料：《ADO.NET 技术内幕》，7-302-07203-5/TP·5245，第201页