protected internal virtual void RemovedControl (Control control)
{
control.UnloadRecursive (false);
control._parent = null;
control._page = null;
control._namingContainer = null;
if ((control.stateMask & AUTOID_SET) != 0) {
control._userId = null;
control.SetMask (ID_SET, false);
}
control.NullifyUniqueID ();
control.SetMask (REMOVED, true);
ResetControlsCache ();
}