constants ArrangeSiblingEnum
The ArrangeSiblingEnum expression specifies how the first child node and its sibling nodes are arranged. Use the ArrangeSiblingNodesAs property to specify how the child nodes of the node are arranged.

NameValueDescription
exDefault0 The first child node and its sibling nodes are arranged vertically. 
exHorizontally1 The first child node and its sibling nodes are arranged horizontally.
exTree2 Aligns the child nodes as a tree, so each node is indented relative to its parent.
For instance, let's say that we have a parent item named Item1, and three child nodes, SubItem 1, SubItem 2 and SubItem 3. 

The exDefault arrangement looks like follows:

The exHorizontally arrangement looks like follows:

The exTree arrangement looks like follows: