GridView如何赋值，访问自定模板中的textbox控件的值

前台页面如下：
        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" ></asp:GridView>
后台代码如下：
using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using zp_Biz;
using System.Data;

public partial class DataGridTest : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

        BasicTableBiz btbiz = new BasicTableBiz();
        //DataSet ds = btbiz.GetInterviewerByComIDAll("137");
        DataSet ds = btbiz.GetInterviewerByComIDNoAccount("137");

        DataSet ds1 = btbiz.GetInterviewerByRel_ID("86","0");

        BoundField mCol_1 = new BoundField();
        mCol_1.DataField = "";
        mCol_1.HeaderText = "序号";
        GridView1.Columns.Add(mCol_1);

        BoundField mCol_2 = new BoundField();
        mCol_2.DataField = "ub_name";
        mCol_2.HeaderStyle.Width = 80;
        mCol_2.HeaderText = "名称";
        mCol_2.ControlStyle.Width=80;
        GridView1.Columns.Add(mCol_2);

        foreach (DataRow perRow in ds.Tables[0].Rows)
        {
            TemplateField tft = new TemplateField();
            //表头信息
            string studentName = perRow["ier_Name"].ToString();
            tft.HeaderText = studentName;
            MyTemplate mtt = new MyTemplate();
            string str = "ierid" + btbiz.GetInerIDByNameComID(studentName, "137");
            mtt.ProName = str;//数据源字段
            tft.ItemTemplate = mtt;
            this.GridView1.Columns.Add(tft);
        }

        GridView1.Visible = true;        //是否隐藏
        GridView1.DataSource = ds1.Tables["zp_ResumeAnalysis"];
        GridView1.DataKeyNames = new string[] { "puser_id" };
        GridView1.DataBind();

       if (GridView1.Rows.Count <= 1)
        {
            return;
        }
        for (int i =1; i <5; i++)
        {
            TableCell oldtc = GridView1.Rows[0].Cells[i];
            for (int j = 1; j < GridView1.Rows.Count; j++)
            {
                TableCell newtc = GridView1.Rows[j].Cells[i];
                if (newtc.Text == oldtc.Text)
                {
                    newtc.Visible = false;
                    if (oldtc.RowSpan == 0)
                    {
                        oldtc.RowSpan = 1;
                        oldtc.RowSpan = oldtc.RowSpan + 1;
                        oldtc.VerticalAlign = VerticalAlign.Middle;
                    }
                    else
                    {
                        oldtc = newtc;
                    }
                }
            }
        }


    }

    public class MyTemplate : System.Web.UI.ITemplate
    {
        private string proName;
        public MyTemplate()
        {
            //
            //TODO: 在此处添加构造函数逻辑
            //
        }
        public string ProName//要绑定的数据源字段名称
        {
            set { proName = value; }
            get { return proName; }
        }

        public void InstantiateIn(Control container)//关键实现这个方法
        {
            TextBox hi = new TextBox();
            hi.DataBinding += new EventHandler(hi_DataBinding);//创建数据绑定事件

            container.Controls.Add(hi);
        }

        void hi_DataBinding(object sender, EventArgs e)
        {
            TextBox hi = (TextBox)sender;
            GridViewRow container = (GridViewRow)hi.NamingContainer;
            //关键位置
            //使用DataBinder.Eval绑定数据
            //ProName,MyTemplate的属性.在创建MyTemplate实例时,为此属性赋值(数据源字段)
            hi.Attributes.Add("Text", "'<%#Eval(" + DataBinder.Eval(container.DataItem, ProName).ToString() + ") %>'");

        }
    }


}
就是赋值到自定义模板中，然后再取出来这个值来，就是搞不定
如GridView1.Rows[0].Cells[1].Control[0]，就是不行，郁闷中，在线等在线结贴 --------------------编程问答-------------------- 建一个table,把textbox的值给table.然后绑定. --------------------编程问答--------------------

补充：.NET技术 ,  C#