If the CheckBoxes property of the ShellTreeView is true then this property can be used to get or set the check state. If the value that is set changes the item's checkstate, and a ShellControlConnector is assigned to the ShellTreeView the item is contained in, the SelectionList will be updated accordingly.

public CheckState CheckState { get; set; }

Public Property CheckState As CheckState

public:
property CheckState CheckState {
	CheckState get ();
	void set (CheckState value);
}