如何获得controls？

Question

        /**//// <summary>
        /// onrowdatabound
        /// </summary>
        /// <param name="e"></param>
        protected override void onrowdatabound(gridviewroweventargs e)
        {
            if (e.row.rowtype == datacontrolrowtype.header)
            {
                // gridviewrow的每个tablecell
                for (int i = 0; i < e.row.cells.count; i++)
                {
                    // tablecell里有一个control并且是linkbutton
                    if (e.row.cells[i].controls.count == 1 && e.row.cells[i].controls[0] is linkbutton)
                    {
                        // linkbutton的命令参数等于排序字段
                        if (((linkbutton)e.row.cells[i].controls[0]).commandargument == this.sortexpression)
                        {
                            image img = null;
                            label lbl = null;                            // 升序
                            if (this.sortdirection == sortdirection.ascending)
                            {
                                // 升序图片
                                if (!string.isnullorempty(_sorttip.sortascimage))
                                {
                                    img = new image();
                                    img.imageurl = base.resolveurl(_sorttip.sortascimage);
                                }
                                // 升序文字
                                if (!string.isnullorempty(_sorttip.sortasctext))
                                {
                                    lbl = new label();
                                    lbl.text = _sorttip.sortasctext;
                                }
                            }
                            // 降序
                            else if (this.sortdirection == sortdirection.descending)
                            {
                                // 降序图片
                                if (!string.isnullorempty(_sorttip.sortdescimage))
                                {
                                    img = new image();
                                    img.imageurl = base.resolveurl(_sorttip.sortdescimage);
                                }
                                // 降序文字
                                if (!string.isnullorempty(_sorttip.sortdesctext))
                                {
                                    lbl = new label();
                                    lbl.text = _sorttip.sortdesctext;
                                }
                            }                            // tablecell里加上图片
                            if (img != null)
                            {
                                e.row.cells[i].controls.add(img);
                            }
                            // tablecell里加上文字
                            if (lbl != null)
                            {
                                e.row.cells[i].controls.add(lbl);
                            }
                        }
                    }
                }
            }            base.onrowdatabound(e);
        }以上是采用的网上一段代码，
现在在gridview类中，重写LoadViewState方法，
请问如何获得类似的这个controls。
if (e.row.rowtype == datacontrolrowtype.header)e.row.cells[i].controls.add(img);排序字段名是可以知道的~~

Answer 1

    // 类似于下面的代码
    protected void grdPhoto_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            if ((DropDownList)e.Row.FindControl("ddlType") != null)
           {       
                DropDownList ddlType= (DropDownList)e.Row.FindControl("ddlType");
           }
         }
     }

Answer 2

http://www.cnblogs.com/webabcd/archive/2007/02/04/639830.html
look

Answer 3

不是啊，各位，
重写这个LoadViewState，在这个方法内，如何能找到类似的控制e.row.cells[i].controls.add(img); 而使得能够添加保存的图片img