find control in panel

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C#

ASP.NET

C#4.0

hi all

i have a web form in which i took a asp.net panel

now at run time i make a table whose id is td

add rows and cells at runtime

now on button click i have to find out table in panel

but im not able to find out

the code for create table is

try
            {
                //Panel1.Controls.Add(new LiteralControl("<table id="as">"));
                Table td=new Table();
                td.ID = "td";
         
                TableRow tr;
                TableCell tc;
                TableCell tc2;
                TableCell tc3;
                int counter = GridView1.Rows.Count;
                for (int i = 0; i < counter; i++)
                {
                    CheckBox cb = ((CheckBox)(GridView1.Rows[i].Cells[0].FindControl("CheckBox1")));
                    Label lb1 = ((Label)(GridView1.Rows[i].Cells[1].FindControl("label1")));
                    Label lb2 = ((Label)(GridView1.Rows[i].Cells[2].FindControl("label2")));
                    Label lb3 = ((Label)(GridView1.Rows[i].Cells[3].FindControl("label3")));
                    Label lb4 = ((Label)(GridView1.Rows[i].Cells[4].FindControl("label4")));
                    
                    if (cb.Checked == true)
                    {
                       tr=new TableRow();
                        //Panel1.control
                     tc=new TableCell();
                        Label lb = null;
                        lb = new Label();
                        lb.ID = "lb" + i.ToString();
                        lb.Text = lb1.Text;
                        tc.Controls.Add(lb);
                        tr.Controls.Add(tc);
                        tc2 = new TableCell();
                       // this.Panel1.Controls.Add(lb);
                       // Panel1.Controls.Add(new LiteralControl("    "));
                        string sdf = (lb2.Text +" "+ lb3.Text +" "+ lb4.Text).ToString();
                        Label lb5 = null;
                        lb5 = new Label();
                        lb5.ID = "lb" + i.ToString();
                        lb5.Text = sdf;
                        tc2.Controls.Add(lb5);
                        tr.Controls.Add(tc2);
                       // this.Panel1.Controls.Add(lb5);
                        //Panel1.Controls.Add(new LiteralControl("    "));
                       TextBox tb = null;
                            tb = new TextBox();
                            tb.ID = "txt" + i.ToString();
                            tc3 = new TableCell();
                            tc3.Controls.Add(tb);
                            tr.Controls.Add(tc3);
                            td.Rows.Add(tr);
                            //this.Panel1.Controls.Add(tb);
                    //        Panel1.Controls.Add(new LiteralControl("<br>"));
                      //      Panel1.Controls.Add(new LiteralControl("<br>"));  
                    }
                    else
                    {
                    }

                }
                Panel1.Controls.Add(td);
            }
            catch (Exception re)
            {
                Response.Write("<script language='javascript'>alert('" + re.Message + "');</script>");
            }
            finally
            {
            }
</br></br></table>

and for find out table in panel is

if (Panel1.Controls.Count == 0)
            {

            }
            else
            {
                Table tf = (Table)this.Panel1.FindControl("td"); 
                int counter = tf.Rows.Count;
                for (int i = 0; i < counter; i++)
                {

                }

}

any idea thanks in advance