Opening Files in a Treeview

Question

Hi All,

I'vjust finished me aking a program which displays all the files in a directory in a ListBox and lets me open them when selected. The problem I found with this was the files were hard to see what folder/subfolder they belonged too. So I'm trying to do the same thing with a treeview however I can't get the files to open from the subfolders.

Code so far:

string dir = @"C:\Test\VideoTraining\";
        private void button1_Click(object sender, EventArgs e) // populate treeview
        {
            ListDirectory(treeView1, dir);            
        }

        private void ListDirectory(TreeView treeview1, string dir)
        {
            treeView1.Nodes.Clear();
            var rootDirectoryInfo = new DirectoryInfo(dir);
            treeView1.Nodes.Add(CreateDirectoryNode(rootDirectoryInfo));
        }

       private static TreeNode CreateDirectoryNode(DirectoryInfo directoryInfo)
        {
            var directoryNode = new TreeNode(directoryInfo.Name);
            foreach (var directory in directoryInfo.GetDirectories())
                directoryNode.Nodes.Add(CreateDirectoryNode(directory));
            foreach (var file in directoryInfo.GetFiles())
                directoryNode.Nodes.Add(new TreeNode(file.Name));
            return directoryNode;
        }

        private void button2_Click(object sender, EventArgs e) // to open file
        {
            string name = treeView1.SelectedNode.ToString().Replace("TreeNode: ",string.Empty);
            MessageBox.Show(dir + "\\" +  name);
            System.Diagnostics.Process.Start(dir + "\\" +  name);
        }