Use the Nodes property to access the control's nodes collection. Use the Add method to add new nodes to organigram. Use the Remove method to remove a specific node. Use the Item property to retrieve a node in the Nodes collection. Use the BeginUpdate and EndUpdate methods to maintain performance while adding new nodes. Use the Images method to assign a collection of icons to the control. Use the Root property to retrieve the root node. The Frames property of the control gives access to the Frames collection.