webview2 events to inform the application for all static files loading-CodePudding

I want to know about all the static files which the webview2 component loads in order to perform some validations. Files that I want to be informed about are images, JavaScript and CSS files.

I spent several hours trying to find an event which will inform me about these files but I did not manage to make it work. I suppose there is some kind of low level management which will give me access to these information.

Can someone help me?

CodePudding user response：

You can use WebResourceRequested event which raises when the WebView is performing a URL request to a matching URL and resource context filter that was added with AddWebResourceRequestedFilter.

Example

In the following example, a message box will be displayed whenever an image is loading from any uri. To do so, drop a WebView2 on the Window and assign it a name webView21 and handle the Loaded event of the window with the following code:

//using Microsoft.Web.WebView2.Core;
//using System.Windows;
private async void Window_Loaded(object sender, RoutedEventArgs e)
{
    await webView21.EnsureCoreWebView2Async();
    webView21.CoreWebView2.AddWebResourceRequestedFilter(
        "*",
        CoreWebView2WebResourceContext.Image);
    webView21.CoreWebView2.WebResourceRequested  = (obj, args) =>
    {
        MessageBox.Show(args.Request.Uri);
    };
    webView21.CoreWebView2.Navigate("https://www.google.com");
}

You can find another example here: Edit HTTP Request header with WebView2.