GridView显示不出绑定的数据

private void GetConnect()
  {
        string strCon = " Provider = Microsoft.Jet.OLEDB.4.0;Data Source =E:\\asptest\\work.xls;Extended Properties=Excel 8.0";
        OleDbConnection myConn = new OleDbConnection(strCon);
        string strCom = "SELECT * FROM [sheet1$]";
        myConn.Open();
        OleDbDataAdapter myCommand = new OleDbDataAdapter(strCom, myConn);
        DataSet myda = new DataSet();
        myCommand.Fill(myda,"[sheet1$]");
        myConn.Close();
        GridView1.DataMember = "[sheet1$]";
        GridView1.DataSource = myda;
        Response.Write("数据绑定");
  }
    protected void Page_Load(object sender, EventArgs e)
    {
        
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        GetConnect();
    }

我的配置是vs2008+sql2008+office2003，，，，Excel 8.0改为excel 11.0就说"找不到可安装的 ISAM"，Excel 8.0的话没有出错，但是 GridView控件没显示数据，一片空白，请问各位大虾是什么问题啊，谢谢！