Toolip的经典用法

 

后台代码:
 protected string setToolip(string id)//提示
    {
        SqlConnection con = Class1.createCon();
        con.Open();
        string sql = "select * from userinfo where id=" + id;
        SqlCommand cmd = new SqlCommand(sql, con);
        SqlDataReader sdr = cmd.ExecuteReader();
        sdr.Read();

        string tooptip = "用户id:" + sdr.GetInt32(0) + "  " + "\n用户姓名:" + sdr.GetString(1) + "  " + "\n用户密码:" + sdr.GetString(2) + "  ";
        return tooptip;

    }
   
 前台代码:
 ToolTip='<%# setToolip(Eval("id").ToString()) %>'