VB.Net Webview2 How can I get html source code?

user_13763149 0
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I sucessfully display a web site on WebView2 in my VB.net (Visual Studio 2017) project but can not get html souce code. Please advise me how to get html code.

My code:

Private Sub testbtn_Click(sender As Object, e As EventArgs) Handles testbtn.Click
        WebView2.CoreWebView2.Navigate("https://www.microsoft.com/")
End Sub

Private Sub WebView2_NavigationCompleted(sender As Object, e As CoreWebView2NavigationCompletedEventArgs) Handles WebView2.NavigationCompleted
        Dim html As String = ?????
End Sub

Thank you indeed for your advise in advance.

webview2 vb.net
2 Answers

I've only just started messing with the WebView2 earlier today as well, and was just looking for this same thing. I did manage to scrape together this solution:

Dim html As String
html = Await WebView2.ExecuteScriptAsync("document.documentElement.outerHTML;")

' The Html comes back with unicode character codes, other escaped characters, and
' wrapped in double quotes, so I'm using this code to clean it up for what I'm doing.
html = Regex.Unescape(html)
html = html.Remove(0, 1)
html = html.Remove(html.Length - 1, 1)

Converted my code from C# to VB on the fly, so hopefully didn't miss any syntax errors.

user_137722370

Adding to @Xaviorq8 answer, you can use Span to get rid of generating new strings with Remove:

html = Regex.Unescape(html)
html = html.AsSpan()[1..^1].ToString();
user_31870330
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