protected void InsertChildProvider(bool raiseEvent, FragmentControlProvider childProvider, int index, bool recursive)
{
if (Navigation.ChildrenContains(childProvider))
{
return;
}
if (index == FAKE_INDEX_TREATED_AS_END || !Navigation.IsIndexValid(index))
{
Navigation.AppendChild(childProvider);
}
else
{
Navigation.InsertChild(index, childProvider);
}
NotifyOnChildStructureChanged(childProvider, StructureChangeType.ChildAdded, raiseEvent);
if (recursive)
{
childProvider.InitializeChildControlStructure();
}
}