Thank you for the provided code.
I have created a sample example how to achieve the described approach using the new AutoCompleteView
control. We'd recommend AutoCompleteView as it provides more features and is more intuitive compared to the old AutoComplete control.
In short, what you need to change is the binding of the ItemsSource of the AutoCompleteView as when the control is placed inside an ItemTemplate, its binding context is the corresponding data item of the ListView source. Using Source
property of the binding you could reference the ListView itself and bind to its SelectedItems collection.
Please take a look at it and let me know if you have any other questions.
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