C# Invoke JavaScript in WebBrowser

Question

I am trying to invoke JavaScript method in my WebBrowser :

WebBrowser webBrowser = new WebBrowser();
webBrowser.NavigateToString(html);
webBrowser.LoadCompleted += ((s, r) =>
{
         try
         {
                 object tmp = webBrowser.InvokeScript("GetData");
         }
         catch (Exception exc)
         {
         }
});

This is the HTML :

<html><head>
<meta http-equiv="content-type" content="text/html; charset=ISO-8859-1">
<title></title>

<script type="text/javascript">
    function GetData ()
    {
        return 50;
    }

</script>

But when i invoke the javascript with :

object tmp = webBrowser.InvokeScript("GetData");

I get Exception:

Message:

An unknown error has occurred. Error: 80020006.

StakeTrace:

   at Microsoft.Phone.Controls.NativeMethods.ValidateHResult(Int32 hr)
   at Microsoft.Phone.Controls.WebBrowserInterop.InvokeScript(String scriptName, String[] args)
   at Microsoft.Phone.Controls.WebBrowser.InvokeScript(String scriptName)
   at YouTube.YouTubeExtractor.<>c__DisplayClass1.<ExtractVideoById>b__0(Object s, NavigationEventArgs r)

on the topic of Javascript invoke on WebBrowser control, see also stackoverflow.com/a/27468013/262379 — Dinis Cruz
– Dinis Cruz, Commented Dec 14, 2014 at 9:35

Olivier Payen · Accepted Answer · 2013-07-17 08:39:00Z

4

You need to set the WebBrowser.IsScriptEnabled to true (it is false by default)

answered Jul 17, 2013 at 8:39

Olivier Payen

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1 Comment

Nick Over a year ago

That is not a property for the WPF WebBrowser control.

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