/// <summary>
/// User has changed their desired image source via changing the dropdown list on the GUI. Creates a new provider
/// based on the value of the dropdown that they selected.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private async void ImageSourceDropDown_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
NextButton.IsEnabled = false;
var providerName = e.AddedItems[0].ToString();
var providerFactory = new ImageProviderFactory();
// set the new imageprovider asynchronously since it requires downloading a page.
await Task.Run(() => { this._imageLinkProvider = providerFactory.CreateProvider(providerName); });
NextButton.IsEnabled = true;
}
public MainWindow()
{
InitializeComponent();
var providerFactory = new ImageProviderFactory();
var defaultProvider = providerFactory.ProviderNames.First();
ImageSourceDropDown.ItemsSource = providerFactory.ProviderNames;
ImageSourceDropDown.SelectedValue = defaultProvider;
}