TreeListView and Checkbox

You need to manually loop through the nodes and show/hide the ones you want. To hide all nodes except for the root, do this.

foreach (TreeListNode aNode in YourTreeListView.Nodes)
 foreach (TreeListNode aNode2 in aNode.Nodes)
  aNode2.CheckBoxVisible = false;

Assuming there is only one level of children. To only show the Children do this.

foreach (TreeListNode aNode in YourTreeListView.Nodes)
  aNode.CheckBoxVisible = false;

Thanks,
HH