How to accomplish two-way data binding in WPF?
c#, data-binding, two-way-binding, wpf
Solution
If you haven't you'll need to implement `INotifyPropertyChanged` for your class that you're binding to.
Also, when you say you want the `ListBox` item to be updated immediately, you mean that you want it to change as you type in the `TextBox`. By default the `TextBox.Text` property updates its source when it loses focus, but you can change this by setting the binding `UpdateSourceTrigger` to `PropertyChanged`:
{Binding Source={...}, Path=Whatever, UpdateSourceTrigger=PropertyChanged}
Problem
I have heard a lot about two-way bindings in WPF, but I'm not entirely clear on how to accomplish it or what it actually means. I have a `ListView` with a bunch of items in it. When the user selects a new item, a `TextBox` in the application will change its text to display some property of the selected item. But when the user changes the text in the text box I want the `ListView` item to be updated immediately as well. Is there any "two-way binding" magical WPF way of accomplishing this?