WebView2 how to load local file?

Question

I have a WebView2 control in my WinForm .NET Framework 4.7.2, how can i load inside it my local html file?

I was trying to set the .Source with file:// extention but nothing...

Here is what i've tryed:

private void Form1_Load(object sender, EventArgs e)
{
    webView.Source = new Uri("file://C:/Users/xxx/Desktop/VisualSelf/self.html");
}

https://stackoverflow.com/questions/13225796/load-local-html-into-webview — Rezaeimh7, Feb 03 '21 at 07:56
Others answers https://stackoverflow.com/questions/42417997/display-local-html-file-content-in-uwp-webview — Cyrille Con Morales, Feb 03 '21 at 08:01
i've added the html file from desktop to my project but if i try to do : `new Uri("ms-appx-web:///VisualSelf/self.html")` the webView still show nothing — Kasper Juner, Feb 03 '21 at 08:06
May you try to load a universal website e.g https://www.microsoft.com? — Rezaeimh7, Feb 03 '21 at 08:30
@m.r226 no... if i set webView.Source = new Uri("https://www.microsoft.com/it-it/") it still doesn't show nothing — Kasper Juner, Feb 03 '21 at 08:32
@m.r226 even if i set in property the source it's not showing anything — Kasper Juner, Feb 03 '21 at 08:34
@m.r226 i forget to install WebView2 Runtime... that was the problem — Kasper Juner, Feb 03 '21 at 08:44

score 9 · Accepted Answer · edited Jun 17 '21 at 02:00

9

You can read HTML file , and then NavigateToString

if (webView!= null && webView.CoreWebView2 != null)
{
     string text = system.IO.File.ReadAllText(@"C:/Users/xxx/Desktop/VisualSelf/self.html");
     webView.CoreWebView2.NavigateToString(text);
}

or you can Navigate to local file:

webView.CoreWebView2.Navigate("file:///C:/Users/xxx/Desktop/VisualSelf/self.html");

Also, you need to install Microsoft Edge WebView2 Runtime.

edited Jun 17 '21 at 02:00

Edward Brey

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answered Feb 03 '21 at 08:49

NajiMakhoul

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1

I used the Navigate("file:///my.html") method and the webview shows "File not found" – programmerRaj Jul 28 '22 at 20:46
This will fail if the HTML content is > 2MB, including embedded fonts from Google, – John Tamburo Dec 21 '22 at 21:54

WebView2 how to load local file?

1 Answers1