我正在学习 WPF WebView 控件,我有以下 MainWindow.xaml
文件:
<Window x:Class="MyWPF.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:MyWPF"
xmlns:WPF="clr-namespace:Microsoft.Toolkit.Wpf.UI.Controls;assembly=Microsoft.Toolkit.Wpf.UI.Controls.WebView"
mc:Ignorable="d"
Title="MainWindow" Height="450" Width="800">
<Grid x:Name="Grid1" Grid.Row="1" Grid.Column="1">
<WPF:WebView x:Name="webView1"
Grid.Row="0"
Grid.Column="0"
Loaded="WebView_Loaded" />
</Grid>
</Window>
以及下面对应的MainWindow.xaml.cs
文件:
namespace MyWPF
{
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
webView1.Navigate(new Uri("https://www.google.com"));
}
private void WebView_Loaded(object sender, RoutedEventArgs e)
{
}
}
}
但我没有收到任何预期的弹出窗口。如果我删除
webView1.Navigate(new Uri("https://www.google.com"));
我可以获得一个空白的弹出窗口。我的代码有什么问题以及如何解决?
更新1
我添加了 Window_Loaded
事件处理程序并将以下两个事件移入其中,现在我可以看到一个空白的弹出窗口,但没有任何内容以及消息框。
Uri uri = new Uri("https://www.google.com");
WebView1.Navigate(uri);
整个更新的代码隐藏:
namespace MyWPF
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void Window_Loaded(object sender, RoutedEventArgs e)
{
MessageBox.Show("Loaded");
Uri uri = new Uri("https://www.google.com");
WebView1.Navigate(uri);
}
}
}
更新2
我在xaml文件中添加了1个超链接和1个按钮,以下是更新后的xaml文件:
<Window x:Class="MyWPF.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:MyWPF"
xmlns:WPF="clr-namespace:Microsoft.Toolkit.Wpf.UI.Controls;assembly=Microsoft.Toolkit.Wpf.UI.Controls.WebView"
mc:Ignorable="d"
Title="MainWindow" Height="450" Width="800" AllowsTransparency="False" >
<Grid x:Name="Grid1" Visibility="Visible" >
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition Width="71*"/>
</Grid.ColumnDefinitions>
<WPF:WebView x:Name="WebView1" Visibility="Visible" Grid.Column="1" Margin="50,50,50,50">
</WPF:WebView>
<Button Name="BTN1" Click="BTN1_Click" Margin="285,380,285,10" Grid.Column="1" >Click Me</Button>
<TextBlock Margin="0,0,747,390" Grid.ColumnSpan="2">
<Hyperlink
NavigateUri="http://www.google.com">
Google
</Hyperlink>
</TextBlock>
</Grid>
</Window>
并将 Button 单击事件处理程序添加到代码隐藏中,并在其中进行 webview 初始化:
namespace MyWPF
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void Window_Loaded(object sender, RoutedEventArgs e)
{
MessageBox.Show("Loaded");
//Uri uri = ;
WebView1.Navigate(new Uri("https://www.google.com"));
}
private void BTN1_Click(object sender, RoutedEventArgs e)
{
MessageBox.Show("Loaded");
WebView1.Navigate(new Uri("https://www.google.com"));
}
}
}
单击超链接后没有任何反应。单击按钮后我看到弹出消息框,但谷歌仍然没有显示。
更新3
我点击了链接:
https://learn.microsoft.com/en-us/windows/communitytoolkit/controls/wpf-winforms/webview#high-dpi
我在xaml文件中设置了Source属性Source="http://www.google.com"
,请参阅以下代码:
<Window x:Class="MyWPF.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:MyWPF"
xmlns:WPF="clr-namespace:Microsoft.Toolkit.Wpf.UI.Controls;assembly=Microsoft.Toolkit.Wpf.UI.Controls.WebView"
mc:Ignorable="d"
Title="MainWindow" Height="450" Width="800" AllowsTransparency="False" >
<Grid x:Name="Grid1" >
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition Width="71*"/>
</Grid.ColumnDefinitions>
<WPF:WebView x:Name="WebView1" Visibility="Visible" Grid.Column="1" Margin="50,50,50,50" Source="http://www.google.com" >
</WPF:WebView>
<Button Name="BTN1" Click="BTN1_Click" Margin="285,380,285,10" Grid.Column="1" >Click Me</Button>
<TextBlock Margin="0,0,747,390" Grid.ColumnSpan="2">
<Hyperlink
NavigateUri="http://www.google.com">
Google
</Hyperlink>
</TextBlock>
</Grid>
</Window>
但仍然无法工作。
更新4
我在按钮点击事件处理程序中添加了((ISupportInitialize)webView).BeginInit()
和((ISupportInitialize)webView).EndInit()
,请参见下面的内容:
using Microsoft.Toolkit.Wpf.UI.Controls;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace MyWPF
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void Window_Loaded(object sender, RoutedEventArgs e)
{
MessageBox.Show("Loaded");
}
private void BTN1_Click(object sender, RoutedEventArgs e)
{
MessageBox.Show("Loaded");
((ISupportInitialize)WebView1).BeginInit();
((ISupportInitialize)WebView1).EndInit();
WebView1.Navigate(new Uri("https://localhost:3000"));
Console.ReadLine();
}
}
}
但是在这一行收到以下错误消息:
((ISupportInitialize)WebView1).BeginInit();
:
- $exception {"Could not find any resources appropriate for the specified culture or the neutral culture. Make sure \"Microsoft.Toolkit.Win32.UI.Controls.DesignerUI.resources\" was correctly embedded or linked into assembly \"Microsoft.Toolkit.Wpf.UI.Controls.WebView\" at compile time, or that all the satellite assemblies required are loadable and fully signed."} System.Resources.MissingManifestResourceException
然后我返回并根据此链接添加了更多属性:
<WPF:WebView x:Name="WebView1" Visibility="Visible" Grid.Column="1" Margin="50,50,50,50" Source="http://www.google.com" IsIndexedDBEnabled="True"
IsJavaScriptEnabled="True"
IsPrivateNetworkClientServerCapabilityEnabled="True"
IsScriptNotifyAllowed="True" >
</WPF:WebView>
但 WebView 仍然无法工作。
最佳答案
我从第一个预览工具包升级时遇到了同样的问题,这都是因为 Navigate
功能导致启动窗口隐藏。
更改自:
WebView1.Navigate(new Uri("https://localhost:3000"));
致:
WebView1.Source = new Uri("https://localhost:3000");
关于c# - WPF WebView 不显示,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/55497936/