C# TreeView Nodes

Question

I'm going to make this as clear as I can, if I leave any details out that would help you help me get it working right, please let me know.

Ok, so what I want to do is:

I have a treeview list, which I want to add Parent Nodes and Child Nodes to, based on ID's.

So, ID's could come in like 32736 and I want it added to the Treeview (Even if it doesn't have any value between 6 - 32736)

Is there anyway possible of doing this? thanks.

A treeview implies a hierarchy and your question needs to better explain what constitutes a parent node vs. a child node. Perhaps you can provide a few examples of the input data and where on your treeview you'd expect each to appear. — Ben Hoffstein
– Ben Hoffstein, Commented Mar 29, 2011 at 19:05
"I have a treeview list" - there is no such thing. Also tag WinForms, WPF or WebForms — Henk Holterman
– Henk Holterman, Commented Mar 29, 2011 at 19:23

David · Accepted Answer · 2011-03-29 19:15:51Z

1

You can add nodes with any key (id) you want if you're adding them manually.

See here: http://msdn.microsoft.com/en-us/library/57aa8e09.aspx for WinForms. It's pretty much the same code for the Asp.Net TreeView.

Then just add it to the collection

TreeNode myNewNode = new TreeNode("SomeTextToDisplay", "SomeId");
myTreeView.Nodes.Add(myNewNode);

answered Mar 29, 2011 at 19:07

David

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Comments

JMcCarty · Accepted Answer · 2011-03-29 19:08:54Z

0

Check out http://msdn.microsoft.com/en-us/library/system.windows.forms.treeview.nodes.aspx When adding the nodes make sure to do it from the primary UI thread to avoid a cross thread exception or use the TreeView.BeginInvoke() method to have the action performed on the correct thread.

TreeViewToModify.BeginInvoke(delegate() => TreeViewToModify.Nodes.Add(new TreeViewNode(id)));

Keep in mind this is not taking into account adding to specific parent/child nodes but the logic is the same.

answered Mar 29, 2011 at 19:08

JMcCarty

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user153923 · Accepted Answer · 2011-03-29 19:09:23Z

0

TreeView1.Nodes.Clear();
TreeNode root = new TreeNode("Base");
TreeView1.Nodes.Add(root);
TreeNode sub = new TreeNode("32736");
root.Nodes.Add(sub);

answered Mar 29, 2011 at 19:09

user153923