取不到控件的值，
這個可能是加載時的問題，但是用了ispostback,也沒有用。
不清楚是怎麼樣一個問題了。
請過路的大仙們指點一下，感謝人世分！
protected void tbnclick()
    {
        string jiZhong = TextBox1.Text;
        string[] arrJZ = jiZhong.Split(',');
        int jiZhongShu = arrJZ.Length;
        for (int i = 0; i < jiZhongShu; i++)
        {
            Table tab = new Table();
            tab.ID = "tab" + i.ToString();
            for (int b = 0; b < 4; b++)
            {
                string tr = "";
                switch (b)
                {
                    case 0:
                        tr = "first";
                        break;
                    case 1:
                        tr = "second";
                        break;
                    case 2:
                        tr = "three";
                        break;
                    case 3:
                        tr = "four";
                        break;
                }
                TableRow tabr = new TableRow();
                for (int r = 0; r < 2; r++)
                {
                    TableCell tabc = new TableCell();
                    TextBox tb = new TextBox();
                    tb.ID = tr + "td" + i.ToString();
                    TableCell tabc1 = new TableCell();
                    tabc1.Text = tr;
                    tabc.Controls.Add(tb);
                    tabr.Cells.Add(tabc);
                    tabr.Cells.Add(tabc1);
                }
                tab.Controls.Add(tabr);
            }
            this.Panel1.Controls.Add(tab);
        }

大家幫幫忙，別只看不頂，
路過的朋友也幫頂一下！