cannot access runtime control

pls help me sir,
in my project i want to create table of controls at runtime, so i use the method given below

public void createcontrol(int id)
{
TableRow r = new TableRow();

TableCell d = new TableCell();
Label empname = new Label();
empname.Text="irfad";
empname.ID = "empname" + id.ToString();
d.Controls.Add(empname);


TableCell c = new TableCell();
TextBox openingbalance = new TextBox();
openingbalance.ID = "openingbalance" + id.ToString();
c.Controls.Add(openingbalance);
r.Cells.Add(c);
Table1.Rows.Add(r);
}
so in each row the id of each control will be change, ie id of the label empname like, empname0, empname1, etc.

here i have a problem like i'm not able to access these controls,i want to access each controls seperately, i hope think we can access the controls based on control id. But here it is not recognized.
what will i do sir,
please help me sir.............