Selects the specified node. This method is in effect only when multi-node selection is available. Otherwise, assign a required node to the FocusedNode property.
A node to select.
If multiple selection in the current TreeList is made by node (the TreeListOptionsSelection.MultiSelectMode property is set to RowSelect), the SelectNode method selects the specified node (the node is added to the TreeList.Selection collection). If multiple selection is made by cell (TreeListOptionsSelection.MultiSelectMode equals CellSelect), the SelectNode method selects all cells of the specified node.