getting the right index of a child node.

[Fuga]

Hi,

Im trying to use a treeview control to navigate through records on a different form, setting the position of the bindingsource on that form to the index of the selected node.

Now, the nodes I select are child nodes, so I need to get the index 5 if I select the first childnode under a parent and there are 4 other childnodes under different parents. As it is, I get index 1.

Do you know how I can solve this problem?

Fuga.

[techgnome]

don't use the index.... try setting the key value and use tat.

-tg

[Fuga]

Thanks for your reply.

The key value is set when you add the treenode, right? I can´t seem to access it. Here´s the code:

        For Each tvrw In tvds.Tables(0).Rows
            tvnode = New TreeNode
            tvnode.Tag = tvrw.Item("Fid")
            tvnode.Text = tvrw.Item("rubrik").ToString
            tvnode.ToolTipText = tvrw.Item("info").ToString
            Faktors.TreeView1.Nodes(0).Nodes.Add(tvnode)
            If tvnode.Tag.ToString = Evaluate.TextBox7.Text Then
                Faktors.TreeView1.SelectedNode = tvnode
            End If
        Next

I also tried using the name property but that didn´t work properly.

How do you think I should do it?

Thanks again.

Fuga.

[Phill64]

I've done similar before using the .Tag of the node, then finding the node with the appropriate tag, so it doesnt matter when its shifted around.

But if you can get a key method working as recommended (which i wasnt aware of) that would save searching the nodes.

[Fuga]

Thanks!

Yes I am using the tag, but for a different purpose.

The thing is, the posts are recorded in one way in the db, so I use the tag to find them there. But they are displayed in a different way in the form so I thought I should use the key for that.

I suppose I could use the tag and find the corresponding position in the bindingsource, move to that position etc, but I was hoping for a quicker way.

Fuga.

[Phill64]

Well a tag is of type "Object" menaing you could put anything in there, like an array to hold 2 values.

But as for the key value, I found this msdn entry about it http://support.microsoft.com/kb/311318 it seems to explain it in depth

[Fuga]

Thanks! That really helps a lot.

Well a tag is of type "Object" menaing you could put anything in there, like an array to hold 2 values.

Why is it that you always make a fool of yourself when you´re a beginner?

Great that I learned this, it´s going to help me in my project.

Fuga.

[Fuga]

Hmm...

I´ve been trying to use the tag as an array, but I can´t get it to work.

I know how to declare the array and to assign values, but I don´t know how to turn the tag into an array.

I´m doing something wrong, aren´t I?

Fuga.

[Fuga]

I've seen other people bump, so I try it too.

I haven´t been able to figure out how to assign an array to the tag property of a treenode. Can´t find it at msdn either.

Any help will be very appreciated.

Fuga.

[Phill64]

Hi again,

I thought you were going to use the keys solution from msdn?

Anwyay, a Tag is a type "Object" so it can be ANYTHING, so theres no reason why it can't be an array, there's several ways to go about it.

here is the 1 liner way to make an array, test this for yourself (im just using a buttons tag)

        Button1.Tag = New String() {"hi", "hello"}
        MsgBox(Button1.Tag(0))
        MsgBox(Button1.Tag(1))

a slower way, depending on your circumstances you may like better

        Dim a As New List(Of String)
        a.Add("hi")
        a.Add("hello")
        Button1.Tag = a.ToArray

Hope that helps.

[Fuga]

Thanks Phill64!

No, once you told me that a tag could hold an array, I thought that would be a good way to go about it. I thought the key method looked more complex, and since I barely know what I´m doing half the time I thought I'll try the array stuff.

However, I think I´ve managed to put an array of values into the tag, but I´ve run into a different problem, which I posted in another thread.

http://www.vbforums.com/showthread.php?t=498811

Fuga.