Hi Shareef,

If all objects in the group can be reached from the group's root node by following the outgoing arrows, it is enough to enable the Expandable property of the boxes in the group.

If there is no path between some box and the root, you might use the AttachTo method to add that box to the group and enable the root.SubordinateGroup.Expandable property. Then the attached box will be expanded/collapsed together with the objects connected to the root through arrows.

If your group is more complex than that, you could set the FlowChart.ExpandButtonAction to RaiseEvents - that will override the standard expand/collapse behavior and let you implement your own expand/collapse logic by handling the TreeExpanded/Collapsed events.

I hope that helps,
Stoyan

Hi,

That should be possible.

If you need to let your users do that, set the Expandable property of box 3 to true, set FlowChart.ExpandButtonAction to RaiseEvents and handle the TreeCollapsed/TreeExpanded event. From the TreeCollapsed handler change the arrow.Origin from 5 to 3, and hide boxes 4 and 5 by setting their Visible property to false. From TreeExpanded restore the arrow Origin and show the boxes.

If you need to show or hide the group only programmatically, you will do something similar, but not from those event handlers.

In both cases you will need to devise a method to store the group relationship, e.g. keep the indices of the group objects in the Tag property of box 3. You could also use the FlowChart.NET Group class to define your group, but that will make boxes 4 and 5 follow the root box 3 when it moves, and you might not want that.

Stoyan