TreeView Trouble

[Bam]

Hi,

Was wondering if anyone could enlighten me on this on;

I have a TreeView Control, The Control has 5 nodes and each node has 2 child nodes. Beside the TreeView Control I have a TextBox Control. What I want to do is everytime i click on a each node or child node i want the certain text to show in the TextBox.

I Figured that to do this would be a case of using a simple IF - ELSE statment to find the node and insert the piece of text...

But after the Following line of code im stuck

PrivateSub TreeView1_AfterSelect(ByVal sender As System.Object, ByVal e As System.Windows.Forms.TreeViewEventArgs) Handles TreeView1.AfterSelect

See I cant seem to find out which part of this statment holds which node is selected and since i don't know that i cant implement a IF - ELSE loop.

Any suggestions?

By the way the stament above is what is generated when you double click the TreeView control.

 

[BadgerByte]

Hey,

You can use e.Node to work out which node has been selected. e.Node.Text will return the text property of the node or e.Node.Tag will return it's tag.

Hope this helps.

 

[Bam]

Hey,

You can use e.Node to work out which node has been selected. e.Node.Text will return the text property of the node or e.Node.Tag will return it's tag.

Hope this helps.

I see,

So would i need to assign e.Node.Tag value to a variable to use in a IF - Else eg:

e.Node.Tag = PretendVariable

IF PretendVariable = 1 Then

Insert Code

End IF

And If this is true would it be a case of 0123456.... For the node Values?

 

[BadgerByte]

That's the bunny,

You could also use the text property but I prefer to use the tag.. You can set the tags to whatever you like.

 

[Bam]

Ok thats all well and good if i want to set the values, but i cant seem to go the other way ie: Get the value from the tag after a certian node is selected then use the value in the IF loop!

I can put up the code if you like.

 

[BadgerByte]

Hey,

I figured this should work if you set the tags beforehand, I may have got the wrong end of the stick here, or I may be just plain wrong, this is off the top of my head. Post back with your code if it doesn't and I'll have a proper look.

[SIZE=2][COLOR=#0000ff]Private [/COLOR][/SIZE][SIZE=2][COLOR=#0000ff]Sub[/COLOR][/SIZE][SIZE=2] TreeView1_AfterSelect([/SIZE][SIZE=2][COLOR=#0000ff]ByVal[/COLOR][/SIZE][SIZE=2] sender [/SIZE][SIZE=2][COLOR=#0000ff]As[/COLOR][/SIZE][SIZE=2] System.Object, [/SIZE][SIZE=2][COLOR=#0000ff]ByVal[/COLOR][/SIZE][SIZE=2] e [/SIZE][SIZE=2][COLOR=#0000ff]As[/COLOR][/SIZE][SIZE=2] System.Windows.Forms.TreeViewEventArgs) [/SIZE][SIZE=2][COLOR=#0000ff]Handles[/COLOR][/SIZE][SIZE=2] TreeView1.AfterSelect

If e.Node.Tag = 0 then
'Do Something
End If
if e.Node.Tag = 1 then
'Do Something else
End If
End Sub
[/SIZE]

 

[Bam]

Yeah thats like what my code is like, but you metioned setting the tags first. I was looking for the tags of the computer as such. For instance i thought that the nodes would have a "label" and you would call that "label" everytime you clicked on a certian node. I take it this is not the way treeview works. Forgive all the questions the Tome i have seems to just skip treeview altogther!

 

[BadgerByte]

No probs Bam,

I too found it kind of weird using treeviews, but there are quite a few strange ways of identifying them. I like to change the nodes Tag property (if you don't, as you've discovered this doesn't contain anything) and then use the code as above. A lot of people use the e.Node.Text to check. so if you had a node who's text was "Tree Node 1" then you could say If e.Node.Text = "Tree Node 1". But as I said I prefer the tag mathod, no particular reason.

Hope this clears things up.

 

[Bam]

Ha Ha it all makes sense!!!!

I can't belive it was that easy!

Thanks man