In the examples so far, data updates flow from the source to the target. But, in some cases, the target property can be directly changed by users, and it would be useful to support the flowing of such changes back to the source. Indeed,
Binding supports this (and more) via its
Mode property, which can be set to one of the following values of the
OneWay—The target is updated whenever the source changes.
TwoWay—A change to either the target or source updates the other.
OneTime—This works just like ...