UI使用BLL及Model

protected void btnAdd_Click(object sender, EventArgs e)
{

  MODEL.User mu = new MODEL.User();

  mu.U_name = tb_name.Text;

  mu.U_pwd = tb_pwd.Text;

  BLL.User bu = new BLL.User();
  Response.Write(bu.Add(mu).ToString());
 }
protected void btnQueryId_Click(object sender, EventArgs e)
{
    BLL.User bu = new BLL.User();
    Response.Write(bu.GetId(tb_name.Text, tb_pwd.Text));
}