How To Implement This Kind Of Sorting?

Here's a basic overview of my Table

ID identity int
ParentID int
Name varchar

Now, the root level items will have a ParentID of NULL, and the child nodes will have it's parent's ID in it's ParentID column (a simple self-referencing relationship).

However, when I select it, I would like to Order by ID, but then have all it's children right after it. For example, if this is the unsorted view:

Code:


ID ParentID Name
----------------------
1 <NULL> Test
2 1 Test Child 1
3 <NULL> Test 2
4 1 Test Child 2
5 3 Test 2 Child 1


I would like the sorted to look like:

Code:


ID ParentID Name
----------------------
1 <NULL> Test
2 1 Test Child 1
4 1 Test Child 2
3 <NULL> Test 2
5 3 Test 2 Child 1


Is this possible with my current structure? If not, how could I change it?