Hi,

Use the flowchart's DeleteObject method to delete nodes. When a node is deleted, all arrows connected to it are deleted automatically so you don't have to deal explicitly with them.

Don't try to delete objects by removing them from a collection that contains them, but use DeleteObject because an item can be contained in several collections. E.g. an arrow is referenced by flowchart.Objects, flowchart.Arrows, aNode.IncomingArrows, otherNode.OutgoingArrows collections. Also DeleteObject takes care of saving undo/redo information and redrawing the invalid part of the diagram.

.NET does not allow to remove items from collections while they are enumerated using 'for each', so you could use the following:

while ChildList.Count > 0 do
  fc.DeleteObject(ChildList[ChildList.Count-1])

HTH
Stoyan