Wpf mvvm listview not updating

The MVVM pattern is a close variant of the Presentation Model pattern, optimized to leverage some of the core capabilities of WPF , such as data binding, data templates, commands, and behaviors.

It can also greatly improve code re-use opportunities and allows developers and UI designers to more easily collaborate when developing their respective parts of the application. The item is deleted from the collection but the List View is not reflecting it.The app has to be restarted to see that the item is deleted.The following sections describe the responsibilities and characteristics of each of the classes in the MVVM pattern.The view's responsibility is to define the structure and appearance of what the user sees on the screen.

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