Gets or sets the node indent. This is a dependency property.
A Double value that specifies the node indent, in pixels.
Indents specify an offset by which data cells are horizontally shifted to the right (to the left if RTL orientation is used). This is required to indicate nesting levels, display expand buttons and images. An indent is specified by the RowIndent property, in pixels. The number of indents that specify the offset depends on the node's nesting level, whether the expand button and image are required to be displayed.
For example, in the image above, the root node has two indents that specify the offset of its data cells. First level nodes (in the image below) contain three indents, etc.