C#：
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.OleDb;
using System.Web.UI.HtmlControls;

public partial class Default2 : System.Web.UI.Page
{
  string ConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|aspxWeb.mdb;Persist Security Info=True";
  OleDbConnection cn1;

  protected void Page_Load( object sender, EventArgs e )
  {
    if (!Page.IsPostBack)
    {
      OleDbConnection cn = new OleDbConnection(ConnectionString);
      cn.Open();
      cn1 = new OleDbConnection(ConnectionString);
      cn1.Open();
      OleDbCommand cmd = new OleDbCommand("select * from [Subject]", cn);
      OleDbDataReader dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
      MasterGridView.DataSource = dr;
      MasterGridView.DataBind();
      dr.Close();
      cmd.Dispose();
      cn.Dispose();
      cn1.Dispose();
      cn = cn1 = null;
    }
  }
  protected void MasterGridView_RowDataBound( object sender, GridViewRowEventArgs e )
  {
    if (e.Row.RowType == DataControlRowType.DataRow)
    {

      GridView oGridView = (GridView)e.Row.FindControl("DetailGridView");
      if (oGridView != null)
      {
        OleDbCommand cmd = new OleDbCommand("select top 10 * from Document Where pid = " + MasterGridView.DataKeys[e.Row.RowIndex].Value, cn1);
        OleDbDataReader dr1 = cmd.ExecuteReader();
        oGridView.DataSource = dr1;
        oGridView.DataBind();
        dr1.Close();
        cmd.Dispose();
      }
    }
  }

  protected void DetailGridView_RowDeleting( object sender, GridViewDeleteEventArgs e )
  {
    GridView a = (GridView)sender;
    Response.Write("您要删除的记录是：" + a.DataKeys[e.RowIndex].Value.ToString() + " TODO：执行删除动作");
    // TODO：执行删除动作
  }
  protected void DetailGridView_RowCommand( object sender, GridViewCommandEventArgs e )
  {

  }
}
注意：EnableViewState="true" 是必须的。