MapCulture.cs

using Bing.Maps;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Navigation;

namespace MapTest
{
    public sealed partial class MainPage : Page
    {
        public MainPage()
        {
            this.InitializeComponent();
            bingmap.HomeRegion = "US";
        }

        protected override void OnNavigatedTo(NavigationEventArgs e)
        {
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            switch ((sender as Button).Content.ToString())
            {
                case "zh-Hant":
                    bingmap.Culture = "zh-Hant";
                    break;
                case "ko":
                    bingmap.Culture = "ko";
                    break;
                case "ja":
                    bingmap.Culture = "ja";
                    break;
            }
        }
    }
}