WebView2 Sample Code not working

[datovy-edam]

On which page?

https://platform.uno/docs/articles/controls/WebView.html

What's wrong?

I created a brand-new project using uno platform templates (5.3) and updated the MainPage.xaml as follows:

<Page x:Class="UnoApp2.MainPage"
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      xmlns:local="using:UnoApp2"
      xmlns:utu="using:Uno.Toolkit.UI"
      xmlns:um="using:Uno.Material"
      Background="{ThemeResource BackgroundBrush}">
    <Grid BorderBrush="Gray" BorderThickness="1" Padding="10">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto" />
            <RowDefinition Height="*" />
            <RowDefinition Height="Auto" />
        </Grid.RowDefinitions>
        <StackPanel Grid.Row="0" Background="LightBlue">
            <TextBlock Text="Hello" />
        </StackPanel>
        <WebView2 Grid.Row="1" x:Name="WebBrowser" />
        <StackPanel Grid.Row="2" Background="LightBlue">
            <TextBlock Text="Goodbye" />
        </StackPanel>
    </Grid>
</Page>

Following the sample I wrote "MainPage.xml.cs":

using Microsoft.Web.WebView2.Core;

namespace UnoApp1.Presentation;

public sealed partial class MainPage : Page
{
    public MainPage()
    {
        this.InitializeComponent();
        InitAsync();
    }
    public async Task InitAsync()
    {
        try
        {
            await WebBrowser.EnsureCoreWebView2Async();
            WebBrowser.CoreWebView2.SetVirtualHostNameToFolderMapping(
                "UnoNativeAssets",
                "WebContent",
                CoreWebView2HostResourceAccessKind.Allow);
            WebBrowser.CoreWebView2.Navigate("http://UnoNativeAssets/index.html");
        }
        catch (Exception ex)
        {

        }
    }
}

The above does not work in WinAppSDK, neither in WebAssembly.

Can you provide a VS (uno 5.2 and 5.3) simple Project that does work for both Win and WebAssembly targets?

I do have a project using (I guess) uno 5.2 with .Net 8.0 in where WebView2 works in WinAppSDK but not in WebAssembly. It looks like WebView2 is not implemented under WebAssembly in this case.

ANOTHER WEBVIEW2 ISSUE

Actually, that other application (see "https://github.com/datovy-edam/Edam.Data.Catalog") is using the Monaco Editor sample code in the uno-platform that uses WebView2 to view the editor and works as expected in WinAppSDK, but not in WebAssembly.

Any sugestions?

Hope to hear from you soon,

Eduardo

Any feedback?

No response

[jeromelaban]

Thanks for the report.

WebView2 support is in progress for some platforms, but we added support for Web in uno 5.5. It's required to upgrade the latest builds to use that feature.