VB.Net - Treeview Logic Problem

[Unter]

Hi all
My Treeview is working fine with the following layout

1 Parent
 
2 Parent
    1 Child
    2 Child
 
3 Parent
..............etc

I have used the MSDN code sample

If tx.Text.Length <> tx.Text.Length Then
Return tx.Text.Length - ty.Text.Length
End If
Return String.Compare(ty.Text, tx.Text)

Which sorts by length - it works but not a whole lot of use.

Could someone point me please to the answers to my 2 problems.

1 How do I sort by node number 1 2 3 - 10 11 12 ...which is how the treeview starts off - at the moment with tv.sort I can only get it to sort back to 1 10 11 - 2 20 21 - etc...

2 Also I need to sort by parents with childs first then parents without like

1 Parent
    1 Child
    2 Cild
3 Parent
    1 Child
    2 Child
2 Parent
4 Parent
5 Parent

Can anyone help please with the logic to sort as described?
Or a link to a sample would be great as I can't find anything.
Many thanks in advance.

[debasisdas]

Are you retrieving data from database to populate the tree control?

If that is the case you can do that using SQL query.

[Killer42]

Just to let you know Unter, I've put some CODE tags in your post to maintain the indenting. Without them, everything just gets squashed to the left.

[Unter]

Thanks for editing the text for me.

The nodes are added by code from data supplied by the user.
Not from a database. And there are very few, perhaps 15 parent
nodes only and with perhaps 4 of them having two or three children.

Thanks for trying