c#之WebBrowser 控件不工作

我正在使用 C# 开发 Windows Phone 7 应用。

我正在尝试使用 Facebook 登录页面进行登录。

这是我的 CS 源代码:

namespace FacebookLogin 
{ 
    public partial class MainPage : PhoneApplicationPage 
    { 
        private const string appId = "xxx"; 
        private const string apiKey = "xxx"; //insert your apps key here... see developers.facebook.com/setup/ 
        private readonly string[] extendedPermissions = new[] { "user_about_me" }; 
        private bool loggedIn = false; 
        private FacebookClient fbClient; 
        PhoneApplicationService appService = PhoneApplicationService.Current; 
 
        // Constructor 
        public MainPage() 
        { 
            InitializeComponent(); 
            fbClient = new FacebookClient(); 
            FacebookLoginBrowser.Loaded += new RoutedEventHandler(FacebookLoginBrowser_Loaded); 
            //FacebookLoginBrowser.Navigated +=new EventHandler<System.Windows.Navigation.NavigationEventArgs>(FacebookLoginBrowser_Navigated); 
        } 
 
        private void FacebookLoginBrowser_Loaded(object sender, RoutedEventArgs e) 
        { 
            if (!loggedIn) 
            { 
                LoginToFacebook(); 
            } 
        } 
 
        private void FacebookLoginBrowser_Navigated(object sender, System.Windows.Navigation.NavigationEventArgs e) 
        { 
            FacebookOAuthResult oauthResult; 
            if (FacebookOAuthResult.TryParse(e.Uri, out oauthResult)) 
            { 
                if (oauthResult.IsSuccess) 
                { 
                    fbClient = new FacebookClient(oauthResult.AccessToken); 
                    loggedIn = true; 
                    loginSucceeded(); 
                } 
                else 
                { 
                    MessageBox.Show(oauthResult.ErrorDescription); 
                } 
            } 
        } 
 
        private void LoginToFacebook() 
        { 
            TitlePanel.Visibility = Visibility.Visible; 
            FacebookLoginBrowser.Visibility = Visibility.Visible; 
            InfoPanel.Visibility = Visibility.Collapsed; 
 
            var loginParameters = new Dictionary<string, object> 
                                      { 
                                          { "response_type", "token" } 
                                          // { "display", "touch" } // by default for wp7 builds only (in Facebook.dll), display is set to touch. 
                                      }; 
 
            var navigateUrl = FacebookOAuthClient.GetLoginUrl(appId, null, extendedPermissions, loginParameters); 
 
            FacebookLoginBrowser.Navigate(navigateUrl); 
        } 
 
        // At this point we have an access token so we can get information from facebook 
        private void loginSucceeded() 
        { 
            TitlePanel.Visibility = Visibility.Visible; 
            FacebookLoginBrowser.Visibility = Visibility.Collapsed; 
            InfoPanel.Visibility = Visibility.Visible; 
 
            fbClient.GetCompleted += 
                (o, e) => 
                { 
                    if (e.Error == null) 
                    { 
                        var result = (IDictionary<string, object>)e.GetResultData(); 
                        Dispatcher.BeginInvoke(() => MyData.ItemsSource = result); 
                    } 
                    else 
                    { 
                        MessageBox.Show(e.Error.Message); 
                    } 
                }; 
            fbClient.GetAsync("/me"); 
        } 
 
        protected override void OnNavigatedFrom(System.Windows.Navigation.NavigationEventArgs args) 
        { 
            appService.State["fbClient"] = fbClient; 
            base.OnNavigatedFrom(args); 
        } 
 
        protected override void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs args) 
        { 
            base.OnNavigatedTo(args); 
        } 
    } 
} 

这是我的 XAML 代码:

<phone:PhoneApplicationPage  
    x:Class="FacebookLogin.MainPage" 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone" 
    xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone" 
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
    mc:Ignorable="d" d:DesignWidth="480" d:DesignHeight="768" 
    FontFamily="{StaticResource PhoneFontFamilyNormal}" 
    FontSize="{StaticResource PhoneFontSizeNormal}" 
    Foreground="{StaticResource PhoneForegroundBrush}" 
    SupportedOrientations="Portrait" Orientation="Portrait" 
    shell:SystemTray.IsVisible="True"> 
    <Grid x:Name="LayoutRoot" Background="Transparent"> 
        <Grid.RowDefinitions> 
            <RowDefinition Height="Auto"/> 
            <RowDefinition Height="*"/> 
        </Grid.RowDefinitions> 
        <StackPanel x:Name="TitlePanel" Grid.Row="0" Margin="12,17,0,28" Visibility="Collapsed"> 
            <TextBlock x:Name="ApplicationTitle" Text="MI APLICACIÓN" Style="{StaticResource PhoneTextNormalStyle}"/> 
            <TextBlock x:Name="PageTitle" Text="nombre de la página" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/> 
        </StackPanel> 
        <Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0"> 
            <phone:WebBrowser HorizontalAlignment="Left" Name="FacebookLoginBrowser" Height="607" VerticalAlignment="Top" Width="450" /> 
            <Grid x:Name="InfoPanel" Grid.Row="1"> 
                <ListBox x:Name="MyData" Height="657" HorizontalAlignment="Stretch" VerticalAlignment="Top"> 
                    <ListBox.ItemTemplate> 
                        <DataTemplate> 
                            <Grid HorizontalAlignment="Stretch" MinWidth="500"> 
                                <Grid.ColumnDefinitions> 
                                    <ColumnDefinition/> 
                                    <ColumnDefinition/> 
                                </Grid.ColumnDefinitions> 
                                <TextBlock Grid.Column="0" Text="{Binding Key}"/> 
                                <TextBlock Grid.Column="1" Text="{Binding Value}" TextWrapping="Wrap"/> 
                            </Grid> 
                        </DataTemplate> 
                    </ListBox.ItemTemplate> 
                </ListBox> 
            </Grid> 
        </Grid> 
    </Grid> 
    <!--<phone:PhoneApplicationPage.ApplicationBar> 
        <shell:ApplicationBar IsVisible="True" IsMenuEnabled="True"> 
            <shell:ApplicationBarIconButton IconUri="/Images/appbar_button1.png" Text="Botón 1"/> 
            <shell:ApplicationBarIconButton IconUri="/Images/appbar_button2.png" Text="Botón 2"/> 
            <shell:ApplicationBar.MenuItems> 
                <shell:ApplicationBarMenuItem Text="Elemento de menú 1"/> 
                <shell:ApplicationBarMenuItem Text="Elemento de menú 2"/> 
            </shell:ApplicationBar.MenuItems> 
        </shell:ApplicationBar> 
    </phone:PhoneApplicationPage.ApplicationBar>--> 
</phone:PhoneApplicationPage> 

错在哪里？ FacebookLoginBrowser_Navigated 并非从未到达。

请您参考如下方法:

这是答案(我什至在查看您的代码之前就知道了，但我做了双重检查)。 WP7 浏览器控件默认禁用 JavaScript(我不明白他们为什么这样做)。因此，您需要将 Web 浏览器控件的“IsScriptEnabled”属性设置为 True(您可以在代码或 XAML 中执行此操作)，然后我敢打赌一切都会正常进行。