Create dynamic dragpanel in asp.net with c#

[Dawit]

I want to create ajax dragpanel dynamically and add the controls and panel dynamically.I used the below code for create the control dynamically.But I can`t able to drag it.\[code\]enter code hereprotected void Page_PreInit(object sender, EventArgs e){ DragPanelExtender drg = new DragPanelExtender(); drg.ID = "drg_1"; drg.DragHandleID = "pnl_1"; drg.TargetControlID = "pnl_2"; Panel p1 = new Panel(); p1.ID = "pnl_1"; Panel p2 = new Panel(); p2.ID = "pnl_2"; Label l1 = new Label(); l1.Text = "First"; TextBox t = new TextBox(); t.Text = "Enter text"; p2.Controls.Add(l1); p2.Controls.Add(t); p1.Controls.Add(p2); Page.Controls.Add(p1);}\[/code\]How to I create drag controls inside the panel