WebView在Windows 10通用应用程序中不显示HTML字符串内容

本文关键字：HTML 显示 字符串 Windows 10通 应用程序 WebView | 更新日期: 2023-09-27 18:21:52

当导航到Windows 10 Universal应用程序时，我正试图显示从上一页以字符串形式发送到当前页的静态HTML内容。

我在XAML中有以下WebView，它将显示HTML内容：

<Grid>    
<StackPanel Orientation="Vertical">
            <WebView x:Name="NewsContent" ext:MyExtensions.HTML="{Binding Source={Binding Content}}" Margin="10,0,0,0"/>
        </StackPanel>
</Grid>

C#部分：

public sealed partial class NewsItemView : Page
{
    WebLink link;
    public NewsItemView()
    {
        this.InitializeComponent();
    }
    protected override void OnNavigatedTo(NavigationEventArgs e)
    {
        NewsContent.NavigateToString((e.Parameter as WebLink).Content); 
}

Helper类实现：

public class MyExtensions
{
    public static string GetHTML(DependencyObject obj)
    {
        return (string)obj.GetValue(HTMLProperty);
    }
    public static void SetHTML(DependencyObject obj, string value)
    {
        obj.SetValue(HTMLProperty, value);
    }
    // Using a DependencyProperty as the backing store for HTML.  This enables animation, styling, binding, etc...  
    public static readonly DependencyProperty HTMLProperty =
        DependencyProperty.RegisterAttached("HTML", typeof(string), typeof(MyExtensions), new PropertyMetadata(0));
    private static void OnHTMLChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
    {
        WebView wv = d as WebView;
        if (wv != null)
        {
            wv.NavigateToString((string)e.NewValue);
        }
    }
}

调试时，HTML内容在（e.Parameter as WebLink）.content中可用，但不显示在WebView中。任何建议都将不胜感激！

WebView在Windows 10通用应用程序中不显示HTML字符串内容

问题是：StackPanel隐藏了您的网络视图。将webview放在StackPanel之外应该可以使其工作。

你也有问题的扩展：

更改

public static string GetHTML(DependencyObject obj)
public static void SetHTML(DependencyObject obj, string value)
public static readonly DependencyProperty HTMLProperty =
    DependencyProperty.RegisterAttached("HTML", typeof(string), typeof(MyExtensions), new PropertyMetadata(0));

至

public static string GetHTML(WebView obj)
public static void SetHTML(WebView obj, string value)
public static readonly DependencyProperty HTMLProperty =
    DependencyProperty.RegisterAttached("HTML", typeof(string), typeof(MyExtensions), new PropertyMetadata("", OnHTMLChanged));
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