Treeview Tutorial
Does anyone know or a
REAL tutorial on Treeview. Not loading ado, xml, directories, etc. I mean one that
explains the properties of the Treeview control. The above is about all I can find on the internet.
What I am trying to do is add a node to the treeview in a predetermined location. I then want to add two sub-nodes to the one just entered.
DimoNodeAsNewTreeNode
oNode.Name ="Level1"
TreeView1.Nodes.Add(oNode)
TreeView1.SelectedNode.Name =oNode.Name==> Getting error here
TreeView1.Nodes.Add("Level1a")
TreeView1.Nodes.Add("level1b")
oNode =NothingThe error is "NullReferencException was unhandeled." and "Object reference not set to an instance of an object."Any tutorial on this subject would be greatly appreciated.
wayne your close... The treeview is a pain in the but I can say that, but to do what you want try to mess with the following code:
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private sub createlevel1()
{
Dim node as New TreeviewNode
node.text = "level 1"
Treeview1.Nodes.Add(node)
}
private sub createlevel2()
{
Dim node as new TreeviewNode
node.text = "Level 2"
Treeview1.SelectectedNode.Nodes.Add(node)
}
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Now what this will do is it will create a Level 1 node and then when you select that node and run the other method it will create a level 2 node under that. I hope this gives you some idea on how to use this control.
