一款经典的ajax登录页面 后台asp.net(9)

    protected void Page_Load(object sender, EventArgs e)
    {
        OleDbConnection Conn = DBcon.get_con();

        if (Request["uname"] != null)
        {
            string username = Request["uname"].ToString();
            string strSql = "select * from [user] where u_name='" + username + "'";
            Conn.Open();
            OleDbCommand Comd = new OleDbCommand(strSql, Conn);
            OleDbDataReader dr = Comd.ExecuteReader();
            if (dr.Read())
            {
                Response.Write("ok\n");
            }
            else
            {
                Response.Write("fail\n");
            }
            //if (Comd.ExecuteNonQuery() > 0)
            //{
            //    Response.Write("存在这个用户\n");
            //}
            //else
            //{
            //    Response.Write("没有此用户名\n");
            //}
            Conn.Close();
        }

        if (Request["name"] != null && Request["pwd"] != null)
        {
            string name = Request["name"].ToString();
            string pwd = Request["pwd"].ToString();
            string strSql = "select * from [user] where u_name='" + name + "'" + " and u_pwd='" + pwd + "'";
            Conn.Open();
            OleDbCommand Comd = new OleDbCommand(strSql, Conn);
            OleDbDataReader dr = Comd.ExecuteReader();
            if (dr.Read())
            {
                Response.Write("ok\n");
            }
            else
            {
                Response.Write("fail\n");
            }
        }
    }

5，新建一名为loginIndex.htm的静态页面，作为用户登录之后的首页

其body标签代码如下