private void systemFilesTreeView_BeforeExpand(object sender, TreeViewCancelEventArgs e)
{
if (e.Node.Nodes.Count > 0)
{
if (e.Node.Nodes[0].Text == "..." && e.Node.Nodes[0].Tag == null)
{
e.Node.Nodes.Clear();
string[] dirs = ctrl.loadSubDirectories(e.Node.Tag.ToString());
DirectoryInfo rootDir = new DirectoryInfo(e.Node.Tag.ToString());
foreach (var file in rootDir.GetFiles())
{
TreeNode n = new TreeNode(file.Name, 13, 13);
e.Node.Nodes.Add(n);
}
foreach (string dir in dirs)
{
DirectoryInfo di = new DirectoryInfo(dir);
TreeNode node = new TreeNode(di.Name, 0, 1);
try {
node.Tag = dir;
if (di.GetDirectories().Count() > 0)
{
node.Nodes.Add(null, "...", 0, 0);
}
foreach (var file in di.GetFiles())
{
TreeNode n = new TreeNode(file.Name, 13, 13);
node.Nodes.Add(n);
}
} catch (UnauthorizedAccessException) {
node.ImageIndex = 12;
node.SelectedImageIndex = 12;
} catch (Exception ex) {
MessageBox.Show(ex.Message, "DirectoryLister",
MessageBoxButtons.OK, MessageBoxIcon.Error);
} finally {
e.Node.Nodes.Add(node);
}
}
}
}
}