There are a couple of cool things that for some reason or other I wasn’t expecting to happen, but was pleasantly surprised when they did. ![]() Now every time a new selection is made in the Picker, a new value is set in the SelectedCheese property. Then to hook it up, all one would need to do, other than setting the BindingContext, is the following: New Cheese Ī very simple view model – only has one property, and that will be the selection from the Picker. The IList is not typed to anything – so you could put a list of whatever type you want into the Picker.įor all the examples that follow, the source of the Picker is the following: public class Cheese This is an IList which controls what each element within the Picker contains. ItemsSource, SelectedItem, and ItemDisplayBinding. There are 3 new properties introduced to the Picker as part of the new data binding functionality (more if you count the backing static BindableProperty properties, but we don’t need to directly address those). Read on to get the full run down of the new data binding! New Properties Finally, ItemDisplayBinding can receive another binding (from a property within the class’s that make up the IList bound to the ItemsSource), that will determine what gets displayed. Then bind whatever you want receiving updates to the SelectedItem. If you’re only here for the goodness of how to data bind to a Picker … first bind an IList collection to the ItemsSource property. And today we’re going to talk about a feature that I keep trying to use, thinking it’s already implemented in Forms… but every time I try, I slap my forehead and remember it’s not there yet … binding a data source to a Picker !! tl dr Īll the code from this post can be found on GitHub here. It’s really cool tracing through the source code to see how a new feature is being implemented and coming together. ![]() ![]() I’m rather starting to like doing these look aheads to features coming out in future versions of Xamarin.Forms.
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