ASP.NET dynamically reassign controls in the control tree

Question

Let's say I have a custom control that looks like this

<cc:MyControl runat="server" ID="myc" LinkControlID="NewParent" />

and, on the same page:

<asp:TextBox runat="server" ID="NewParent" />

What I would like to do is, from MyControl, change NewParent's parent so that it would be part of MyControl's Controls collection. When I try to do this, from OnInit, I get:

The control collection cannot be modified during DataBind, Init, Load, PreRender or Unload phases.

Which makes sense, but is there a way around this? I'm OK if NewParent remains the child of the Page as long as from MyControl I can somehow redirect the rendering to MyControl's control.

Can this be done? Thanks.

EDIT:

To clarify here's a mockup of MyControl:

public class MyControl : Panel
{
  protected override void OnInit(System.EventArgs e)
  {
 base.OnInit(e);
 if (!String.IsNullOrEmpty(LinkControlID))
 {
   Control link = Parent.FindControl(LinkControlID);
   if (link != null)
   {
  Controls.Add(link);
   }
 }
  }
  public string LinkControlID { get; set; }
}

This assumes that MyControl and LinkControlID are placed on the same level in the tree hierarchy, which is OK in my case.

Answer 1

why don't you try adding it in Page_LoadComplete

myc.Controls.Add(NewParent);

Answer 2

I couldn't reproduce it, but as aman.tur suggested, have you tried another event? Overriding CreateChildControls() seems like the right place for it.