在ascx中怎么获取后台遍历出来HtmlTextArea（多行文本域）的值并且把它传到aspx中？

public void Fill(int count,ArrayList sdf)   {       ArrayList ar = sdf;       Model.stock stockInfo = null;       for (int i = 0; i < ar.Count; i++)       {           stockInfo = Bll.Stock.GetStockByUUID(ar[i].ToString());           if (IsPostBack)           {               HtmlTextArea ht = new HtmlTextArea();               ht.ID ="stocs";               ht.Name = "hh" + i;               ht.InnerText = stockInfo.remark;               Panel1.Controls.Add(ht);           }       }   }

------解决方案--------------------
用反射？
http://www.cnblogs.com/insus/archive/2013/03/09/2951668.html

用委托？
http://www.cnblogs.com/insus/archive/2011/11/16/2251314.html
http://www.cnblogs.com/insus/archive/2013/02/03/2890664.html

用接口(interface)?
http://www.cnblogs.com/insus/archive/2012/09/26/2703462.html


用接口(interface) + FindControl()方法？
http://www.cnblogs.com/insus/archive/2012/10/07/2713568.html