Navigation in a Treeview control

[Guest]

In VB.Net:
I have a Treeview control with 3 nodes; the third node has a child node. The
first node is selected. if I use up arrow key; it selects the 3rd node.
How do I select the very last node of the tree which is, in my case, is a
child node 'Child1'?

Parent1
Parent 2
Parent 3
Child1

 

[Guest]

Try this for the keydown event on the tree view:
(i wrote it in c# and converted by hand so they may be a small error or two)

Private Sub treeView1_KeyDown(sender as Object, e as KeyEventArgs)
if (e.KeyCode == Keys.Up) then
if (treeView1.SelectedNode.Parent = null and
treeView1.SelectedNode.PrevVisibleNode = null) then
//find last node
TreeNode lastnode = treeView1.Nodes(treeView1.Nodes.Count - 1)
while (lastnode.Nodes.Count > 0)
lastnode = lastnode.Nodes(lastnode.Nodes.Count - 1)
end while

treeView1.SelectedNode = lastnode
e.Handled = true
End if
End If
End Sub



Ciaran O'Donnell

 

[Guest]

Ciaran,
Thanks, it worked fine.

Try this for the keydown event on the tree view:
(i wrote it in c# and converted by hand so they may be a small error or two)

Private Sub treeView1_KeyDown(sender as Object, e as KeyEventArgs)
if (e.KeyCode == Keys.Up) then
if (treeView1.SelectedNode.Parent = null and
treeView1.SelectedNode.PrevVisibleNode = null) then
//find last node
TreeNode lastnode = treeView1.Nodes(treeView1.Nodes.Count - 1)
while (lastnode.Nodes.Count > 0)
lastnode = lastnode.Nodes(lastnode.Nodes.Count - 1)
end while

treeView1.SelectedNode = lastnode
e.Handled = true
End if
End If
End Sub



Ciaran O'Donnell

 

[Guest]

You should mark the question as answered and the post as help full then. It
helps people when they are looking for solutions through the history

Ciaran