Wpf binding in style not updating
The tradeoff is probably worth it if you have a high ratio of model modification to model creation. If you’re like me, the presence of “Text” everywhere in this set of examples has been like a little pebble stuck in your shoe.It’s annoying enough to irritate, but not necessarily quite annoying enough to fix at the moment.One of the central idioms of WPF development is having presentation tier classes implement the INotify Property Changed interface.Anybody who has done more than a “Hello World” WPF application or two is almost certainly familiar with this and quite probably knows it like the back of his or her hand.= value) before doing the setting or firing the event.
So here when I change the Cell No the Text will be updated and When I change the Cell No the Text will be updated. public string Cell Value // Using a Dependency Property as the backing store for Limit Value. public static readonly Dependency Property Cell Value Property = Dependency Property.However, continuing the silly metaphor, you eventually hit your breaking point, wrench off your shoe, and do something about it.With the magic strings, that came a few months back.The next thing that will probably occur to someone after working with this for a while (or at least it did to me), is that it might not be necessary to create the same object every time a property is set.
And that’s really what’s happening–you’re creating a new Property Changed Event Args(), which is handed over to any event handler and then (probably) subsequently discarded.The end effect is that, for the life of the object, you get the benefit from the previous example of a single creation and the additional benefit of not taking a huge hit at application startup for all (and some potentially unneeded) properties.