Question

我的应用程序是一个Web浏览器。我在XAML中添加了一个进度条，但是当浏览器运行时，进度条不会运行，甚至会出现在GUI上，

我的代码：

protected override void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e)
{
    webBrowser1.Navigated += new EventHandler<System.Windows.Navigation.NavigationEventArgs>(Browser_Navigated);
    webBrowser1.Navigating += new EventHandler<NavigatingEventArgs>(Browser_Navigating);
    webBrowser1.Navigate(new Uri("http://nhomxe.vn", UriKind.Absolute));
}

进度：

void Browser_Navigating(object sender, NavigatingEventArgs e)
{
    ProgBar.Visibility = Visibility.Visible;
}

void Browser_Navigated(object sender, System.Windows.Navigation.NavigationEventArgs e)
{
    ProgBar.Visibility = Visibility.Collapsed;
}

的Xaml：

<!--ContentPanel - place additional content here-->
    <Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
        <ProgressBar Foreground="Green" x:Name="ProgBar" Visibility="Collapsed" IsIndeterminate="True" Height="50" HorizontalAlignment="Left" Margin="10,66,0,0" VerticalAlignment="Center" Width="480" />
        <phone:WebBrowser Name="webBrowser1" HorizontalAlignment="Stretch" Margin="0,-12,-13,0" VerticalAlignment="Stretch" IsScriptEnabled="True"/>
        <phone:WebBrowser Name="webBrowser2" Width="1" Height="1" IsScriptEnabled="True"></phone:WebBrowser>
    </Grid>

Answer 1

试试这个。您可以使用SystemTry

中的ProgressIndicator

protected override void OnNavigatedTo(NavigationEventArgs e)
{
    base.OnNavigatedTo(e);
    SystemTray.ProgressIndicator = new ProgressIndicator(); // << NEW

    webBrowser1.Navigated += new EventHandler<System.Windows.Navigation.NavigationEventArgs>(Browser_Navigated);
    webBrowser1.Navigating += new EventHandler<NavigatingEventArgs>(Browser_Navigating);
    webBrowser1.Navigate(new Uri("http://nhomxe.vn", UriKind.Absolute));
}

创建以下方法以显示ProgressIndicator

private void DisplayProgressIndicator(bool isvisible, string message = "")
{
    SystemTray.ProgressIndicator.Text = message;
    SystemTray.ProgressIndicator.IsIndeterminate = isvisible;
    SystemTray.ProgressIndicator.IsVisible = isvisible;
}

修改你的事件处理程序。

private void Browser_Navigating(object sender, NavigatingEventArgs e)
{
    DisplayProgressIndicator(true, "Loading...");
}

private void Browser_Navigated(object sender, NavigationEventArgs e)
{
    DisplayProgressIndicator(false);
}

这应显示SystemTry

中页面加载的进度

Answer 2

使用此Xaml代码而不是Xaml代码。

        <phone:WebBrowser Name="webBrowser1" HorizontalAlignment="Stretch" Margin="0,-12,-13,0" VerticalAlignment="Stretch" IsScriptEnabled="True"/>
        <phone:WebBrowser Name="webBrowser2" Width="1" Height="1" IsScriptEnabled="True"></phone:WebBrowser>
  <ProgressBar Foreground="Green" x:Name="ProgBar" Visibility="Collapsed" IsIndeterminate="True" Height="50" HorizontalAlignment="Left" Margin="10,66,0,0" VerticalAlignment="Center" Width="480" />
    </Grid>

在winphone上将进度条添加到webbrowser

2 个答案: