void lnkSelectAllMediaTypes_Click(object sender, RoutedEventArgs e)
{
EnumWrapperList <MediaType> source = lstMediaTypes.ItemsSource as EnumWrapperList <MediaType>;
bool selectAll = (sender as Hyperlink) == lnkSelectAllMediaTypes;
source.SelectAll(selectAll);
SetListDataSource(lstMediaTypes, source);
}
void lnkSelectAllVideoFormats_Click(object sender, RoutedEventArgs e)
{
EnumWrapperList <VideoFormat> source = lstVideoFormats.ItemsSource as EnumWrapperList <VideoFormat>;
bool selectAll = (sender as Hyperlink) == lnkSelectAllVideoFormats;
source.SelectAll(selectAll);
SetListDataSource(lstVideoFormats, source);
}