Question

I have worked through the answer provided here. I have been able to create a list of automatically generated Hyperlink buttons in a ListBox. The goal is that, when a different user is typed into the box and the button is clicked, they old artists are removed (assuming it’s a valid username) and replaced with the artists from the new last.fm user. However, now this line does not work:

ArtistsList.Items.Clear();

Is this only for text? If so, does anybody know another way to remove the hyperlink buttons once the Go! button has been clicked again? I’ll provide what I believe to be the pertinent page.xaml.cs code if that will help.

            if (uname.Text != String.Empty && uname.Text != "Try Another One!")
            {
                App app = (App)Application.Current;
                app.UserName = uname.Text;
                String getTopArtists = "http://ws.audioscrobbler.com/2.0/?method=user.gettopartists&user=" + app.UserName + "&api_key=d2d620af554a60f228faed8d502c4936";
                WebClient web = new WebClient();
                WebClient client = new WebClient();
                client.DownloadStringCompleted += new DownloadStringCompletedEventHandler(DownloadStringCompleted);
                client.DownloadStringAsync(new Uri(getTopArtists));
            }

This is what the HyperlinkButton looks like in the page.xaml code:

<ListBox FontFamily="Calibri" HorizontalAlignment="Center" VerticalAlignment="Center" Width="200" Height="200" Margin="50,140,50,50" x:Name="ArtistsList" Foreground="Crimson">
    <ListBox.ItemTemplate>
        <DataTemplate>
            <StackPanel>
                <HyperlinkButton Content="{Binding Name}" NavigateUri="{Binding Amazon}" TargetName="_blank" Width="173.5" Foreground="Crimson"></HyperlinkButton>
            </StackPanel>
         </DataTemplate>
    </ListBox.ItemTemplate>
</ListBox>

I believe this is all of the necessary code to answer the question. If not, I can provide more.

Answer 1

instead of using ArtistsList.Items.Clear();
just try
ArtistsList.ItemsSource=null;
ArtistsList.ItemsSource = [newlistsource].
If you do not understand please reply