A data view that listens to a data grid in the same form shows detailed information about the object that is currently selected in the data grid. The listen target property allows you to select a data grid to listen to. The entity of the data view should be the same or a generalization of the entity in the data grid. An example of using listen target is a data grid showing orders and a data view showing detailed information about the order in the same form. For more information can be found here.