Gets or sets the path to an Int32 value on the source node item to serve as the indentation level in the hierarchical collection, or null to indicate that the indentation level is not provided by the source node item. The hierarchy is based on the indentation level values of the nodes, so that a node with a lower index in the collection and having a specific indentation level will become the parent node for the nodes with a higher index in the collection and having an increased indentation level. It is recommended to set this property. This is a dependency property.

[BindableAttribute(true)]
public string IndentationMemberPath { get; set; }

<BindableAttribute(True)> _
Public Property IndentationMemberPath As String