Wpf listview itemssource not updating


13-Sep-2020 16:07

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The example is pretty simple, with a User class that will keep the name of the user, a List Box to show them in and some buttons to manipulate both the list and its contents.

The Items Source of the list is assigned to a quick list of a couple of users that we create in the window constructor.

It's called Observable Collection, and you use it much like a regular List - that's all it takes!

This will make the Add and Delete button work, but it won't do anything for the "Change name" button, because the change will happen on the bound data object itself and not the source list - the second step will handle that scenario though.

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.

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I apologize for the inconvenience, thank you for your understanding. Progress Telerik Do you want to have your say when we set our development plans?As you will learn in this article, you need just a bit of extra work for this to happen, but fortunately, WPF makes this pretty easy.There are two different scenarios that you may or may not want to handle when dealing with data source changes: Changes to the list of items and changes in the bound properties in each of the data objects.You will have to actually kill the app by swiping in the suspended app list and restart the app.

Hi Zlatko, This forum is for UI for Xamarin, which is why I answered in the context of Xamarin Rad List View.

But one more issue with i OS is that when you exit the app by pressing the Home button, the app is actually in the suspended state and a snapshot of the current page is saved.