how to visible the panel in asp.net?

 for (int i = 1; i <= test; i++)
        {
            Panel panel = (Panel)TabContainer1.FindControl("tab3").FindControl("P"+i.ToString());
 string t=panel.ID;
}
// Here I stored the panel id in 't'.
Now if panel id is "P1", the P1 panel should display. like wise panel2.
i have placed some controls in panel




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