private void HandleExpandExecuted(object obj)
{
TreeItem ti = (TreeItem)obj;
if (ti == null)
{
return;
}
if (ti.IsFullyLoaded)
{
return;
}
ti.Children.Clear();
string path = ti.GetFullPath();
DirectoryInfo di = new DirectoryInfo(path);
try
{
foreach (DirectoryInfo sub in di.GetDirectories())
{
TreeItem item = new TreeItem(sub.Name, ti);
item.Children.Add(new TreeItem(_emptyName, item));
ti.Children.Add(item);
}
}
catch (UnauthorizedAccessException ex)
{
ti.Forbidden = true;
CheckSelected();
}
ti.IsFullyLoaded = true;
}