Error in WinUI 3 Application.

[NaeemKhan972]

Hi everyone!I am trying to develop a WinUI 3 application in C#. Following is the GitHub repository link for the application code:My Friends CollectionIt is basically a duplicate application from a Packt book "Learn WinUI 3."I am having two issues, that I have been unable to resolve.1. The SelectedMedium is not displayed in the view, while in the debut info, it gets the correct value and all other variables are displayed correctly. The problem code is located in FriendDetailsViewModel.cs at line 77. We can add friends to the collection through the add button on the main page. When one double cl

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