Azure AD Authentication for WPF App using MSAL

MainWindow.xaml.cs

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
    }

    private async void SignInButton_Click(object sender, RoutedEventArgs e)
    {
        string[] scopes = new string[] { "user.read" };

        AuthenticationResult authResult = null;
        var app = App.PublicClientApp;
        try
        {

            ResultText.Text = "";

            authResult = await (app as PublicClientApplication).AcquireTokenInteractive(scopes)
                .ExecuteAsync();

            DisplayBasicTokenInfo(authResult);
            UpdateSignInState(true);
        }
        catch (Exception ex)
        {
            ResultText.Text = $"Error Acquiring Token:{Environment.NewLine}{ex}";
        }
    }

    private async void SignOutButton_Click(object sender, RoutedEventArgs e)
    {
        IEnumerable<IAccount> accounts = await App.PublicClientApp.GetAccountsAsync();
        try
        {
            while (accounts.Any())
            {
                await App.PublicClientApp.RemoveAsync(accounts.FirstOrDefault());
                accounts = await App.PublicClientApp.GetAccountsAsync();
            }

            UpdateSignInState(false);
        }
        catch (MsalException ex)
        {
            ResultText.Text = $"Error signing-out user: {ex.Message}";
        }
    }

    private void UpdateSignInState(bool signedIn)
    {
        if (signedIn)
        {
            SignOutButton.Visibility = Visibility.Visible;
            SignInButton.Visibility = Visibility.Collapsed;
        }
        else
        {
            ResultText.Text = "";
            TokenInfoText.Text = "";

            SignOutButton.Visibility = Visibility.Collapsed;
            SignInButton.Visibility = Visibility.Visible;
        }
    }

    private void DisplayBasicTokenInfo(AuthenticationResult authResult)
    {
        TokenInfoText.Text = "";
        if (authResult != null)
        {
            TokenInfoText.Text += $"Username: {authResult.Account.Username}" + Environment.NewLine;
            TokenInfoText.Text += $"Token Expires: {authResult.ExpiresOn.ToLocalTime()}" + Environment.NewLine;
        }
    }
}