windows8 預設協議

windows預設協議推樣本這個樣本展示如何啟動使用者預設的應用程式檔案類型或協議。你也可以學習如何使您的應用程式使用預設的應用程式檔案類型或協議

 

 public sealed partial class LaunchUriInput : Page
    {
        // A pointer back to the main page which is used to gain access to the input and output frames and their content.
        rootPage rootPage = null;
        string uriToLaunch = @"http://www.bing.com";

        public LaunchUriInput()
        {
            InitializeComponent();
        }

        #region Template-Related Code - Do not remove
        protected override void OnNavigatedTo(NavigationEventArgs e)
        {
            // Get a pointer to our main page
            rootPage = e.Parameter as rootPage;
        }

        protected override void OnNavigatedFrom(NavigationEventArgs e)
        {
        }
        #endregion

        // Launch a URI.
        private async void LaunchUriButton_Click(object sender, RoutedEventArgs e)
        {
            // Create the URI to launch from a string.
            var uri = new Uri(uriToLaunch);

            // Launch the URI.
            bool success = await Windows.System.Launcher.LaunchUriAsync(uri);
            if (success)
            {
                rootPage.NotifyUser("URI launched: " + uri.AbsoluteUri, NotifyType.StatusMessage);
            }
            else
            {
                rootPage.NotifyUser("URI launch failed.", NotifyType.ErrorMessage);
            }
        }

        // Launch a URI. Show a warning prompt.
        private async void LaunchUriWithWarningButton_Click(object sender, RoutedEventArgs e)
        {
            // Create the URI to launch from a string.
            var uri = new Uri(uriToLaunch);

            // Configure the warning prompt.
            var options = new Windows.System.LauncherOptions();
            options.TreatAsUntrusted = true;

            // Launch the URI.
            bool success = await Windows.System.Launcher.LaunchUriAsync(uri, options);
            if (success)
            {
                rootPage.NotifyUser("URI launched: " + uri.AbsoluteUri, NotifyType.StatusMessage);
            }
            else
            {
                rootPage.NotifyUser("URI launch failed.", NotifyType.ErrorMessage);
            }

        }
        // Launch a URI. Show an Open With dialog that lets the user chose the handler to use.
        private async void LaunchUriOpenWithButton_Click(object sender, RoutedEventArgs e)
        {
            // Create the URI to launch from a string.
            var uri = new Uri(uriToLaunch);

            // Calulcate the position for the Open With dialog.
            // An alternative to using the point is to set the rect of the UI element that triggered the launch.
            Point openWithPosition = GetOpenWithPosition(LaunchUriOpenWithButton);

            // Next, configure the Open With dialog.
            var options = new Windows.System.LauncherOptions();
            options.DisplayApplicationPicker = true;
            options.UI.InvocationPoint = openWithPosition;
            options.UI.PreferredPlacement = Windows.UI.Popups.Placement.Below;

            // Launch the URI.
            bool success = await Windows.System.Launcher.LaunchUriAsync(uri, options);
            if (success)
            {
                rootPage.NotifyUser("URI launched: " + uri.AbsoluteUri, NotifyType.StatusMessage);
            }
            else
            {
                rootPage.NotifyUser("URI launch failed.", NotifyType.ErrorMessage);
            }
        }

        // The Open With dialog should be displayed just under the element that triggered it.
        private Windows.Foundation.Point GetOpenWithPosition(FrameworkElement element)
        {
            Windows.UI.Xaml.Media.GeneralTransform buttonTransform = element.TransformToVisual(null);

            Point desiredLocation = buttonTransform.TransformPoint(new Point());
            desiredLocation.X = desiredLocation.X + element.ActualWidth / 2;
            desiredLocation.Y = desiredLocation.Y + element.ActualHeight;

            return desiredLocation;
        }

    } 

 完整樣本/Files/risk/windows8/預設協議sample.rar