Quick treeview question

[Kay]

Hi all,

I have a treeview, each node's tag has a value. What I'm trying to do is
when a user click on a child node, I want to get the parent's tag value.
The problem i'm having is I don't know whether the selected node has a
parent or not... could u help?

Thanks~

Kay

 

[Scott M]

You could store a reference to the parent in the tag value. That would mean
you'd have to create a custom class to hold the information that you need
AND the parent.

 

[Cor Ligthert [MVP]]

Kay,

I have a treeview, each node's tag has a value. What I'm trying to do is
when a user click on a child node, I want to get the parent's tag value.
The problem i'm having is I don't know whether the selected node has a
parent or not... could u help?

Sometimes it helps to look at MSDN, it is complete exact as you ask
describted here.

http://msdn.microsoft.com/library/d...ystemWindowsFormsTreeNodeClassParentTopic.asp

I hope this helps,

Cor

 

[Phill. W]

The problem i'm having is I don't know whether the selected node
has a parent or not...

Every Node has a Parent property that holds a reference to
its immediate Parent Node, or nothing if it's at the root level,
as in :

If Not( tv.SelectedNode.Parent is Nothing ) then
Zap( tv.SelectedNode.Parent.Tag )
End If

(I /think/ it's SelectedNode - might be SelectedItem; haven't got
'Studio to hand at the moment).

HTH,
Phill W.

 

[Herfried K. Wagner [MVP]]

If Not( tv.SelectedNode.Parent is Nothing ) then
Zap( tv.SelectedNode.Parent.Tag )
End If

(I /think/ it's SelectedNode - might be SelectedItem; haven't got
'Studio to hand at the moment).

It's actually 'SelectedNode' .

 

[Kay]

Thanks a lot guys!

Cor thanks for remind me that, I tried the VS help (looked into the parent
property) but I didn't get what I need, now I know the online version is
different from the VS help!

 

[Cor Ligthert [MVP]]

Kay,

I never use the inbuild help anymore.

Here is the other one, sometimes better, sometimes worse.

http://lab.msdn.microsoft.com/searchbeta/



Cor