I currently have a bunch of config files I need to load into an IOrderedEnumerable My current approach looks like so:

```
foreach (var item in configFiles)
{
    XDocument myxml = XDocument.Load(item);
    var items = myxml.Root.Elements("Item");
    Items = items.OrderBy(x => x.Attribute("ID").Value);
    ItemsLength += Items.Count();              
}

```

The problem is, instead of making `Items` equal to `items.OrderBy(x => x.Attribute("ID").Value)` I'd like to join that to the end of the currently existing IOrderedEnumerable so I'm not overwriting it each time I load a new XDocument and get all of the elements from it. How would I do this?

EDIT: I know that if I change this `ItemsLength += Items.Count();` will no longer function properly. That's something I'll change on my own.