public void OneWayBinding() { var vm = new PropertyChangedViewModel(); var control = new DependencyPropertyBehaviorTestControl() { DataContext = vm }; vm.SetReadOnlyProperty("1"); var behavior = new DependencyPropertyBehavior() { PropertyName = "Property" }; BindingOperations.SetBinding(behavior, DependencyPropertyBehavior.BindingProperty, new Binding("ReadOnlyProperty") { Mode = BindingMode.OneWay }); Interaction.GetBehaviors(control).Add(behavior); Assert.AreEqual(1, control.propertyChangedCounter); Assert.AreEqual("1", control.Property); vm.SetReadOnlyProperty("2"); Assert.AreEqual(2, control.propertyChangedCounter); Assert.AreEqual("2", control.Property); }