populate treeview

You can actually reduce your node description string to:

    String[] data = new string[] {"tv|comedy", "tv|horror", "game|pc|genre"};

Excellent.

It's lot different from my codes which I had struggled to make it work.

Thank you very much. :)

found a minor problem...

I  have some duplicate words in node description string, the treeview won't look right due to hashtable that doesn't accept any duplicate words...

example:

test|test|test
abc|test|abc
orange|apple|apple
etc.

any solutions to this problem?
thanks

In that case you would need to traverse the TreeView using a Recursive algorithm....I'll post another solution for ya.  =)

Try this out...

        private void button1_Click(object sender, EventArgs e)
        {
            String[] data = new string[] {"tv|comedy", "tv|horror", "game|pc|genre", "test|test|test", "abc|test|abc", "orange|apple|apple"};            

            treeView1.BeginUpdate();
            treeView1.Nodes.Clear();            
            foreach (String path in data)
            {
                buildNodes(path.Split("|".ToCharArray()), 0, null);
            }
            treeView1.ExpandAll();
            treeView1.EndUpdate();
        }

        private void buildNodes(String[] path, int level, System.Windows.Forms.TreeNode parentNode)
        {
            System.Windows.Forms.TreeNode node = null;

            if (parentNode == null)
            {              
                foreach (System.Windows.Forms.TreeNode curNode in treeView1.Nodes)
                {
                    if (curNode.Text.Equals(path[level]))
                    {
                        node = curNode;
                        break;
                    }
                }
            }
            else
            {
                foreach (System.Windows.Forms.TreeNode curNode in parentNode.Nodes)
                {
                    if (curNode.Text.Equals(path[level]))
                    {
                        node = curNode;
                        break;
                    }
                }
            }

            if (node == null)
            {
                node = new System.Windows.Forms.TreeNode(path[level]);
                if (parentNode == null)
                {
                    treeView1.Nodes.Add(node);
                }
                else
                {
                    parentNode.Nodes.Add(node);
                }
            }

            if (level < path.GetUpperBound(0))
            {
                buildNodes(path, ++level, node);
            }
        }

Did this fix your problem rizel?

Sorry, I was away for few days...I finally got a chance to write your code today.
Yes, it worked fine perfectly even with multi-language texts. :)

Thanks a bunch :)

Cool...   =)