C# WebApplication with WebBrowser

Question

I am trying to run Javascript function inside ASP.Net Web Application, and i am using WebBrowser to do this:

JavaScriptSerializer js = new JavaScriptSerializer();
Dictionary<string, object> mainDic = (Dictionary<string, object>)js.DeserializeObject(fulljsFile);

String base64Content = (String)mainDic["html"];
String html = Base64.Base64Decode(base64Content);

Thread thread = new Thread(delegate()
{
    WebBrowser browser = new WebBrowser();

    browser.Navigate("about:blank");
    if (browser.Document != null)
    {
        browser.Document.Write(string.Empty);
    }

    browser.Document.Write(html);

    string name = (string)browser.Document.InvokeScript("extract");
});
thread.SetApartmentState(ApartmentState.STA);
thread.Start();
thread.Join();

This is the html var :

<html><script>
function extract()
{
    return 'Steve';
};
    </script>
</html>

The problem is that name is empty instead of Steve.

When i run it locally on my IIS server it's working, but when i upload it to my server it's fail to return something to name var.

There are better ways to do that, see for example [Embedding JavaScript engine into .NET](http://stackoverflow.com/questions/172753/embedding-javascript-engine-into-net). Anyway non-repro, this code does not "return" anything. Please show your actual code, and the exception handling you use. I'm fairly sure WinForms's WebBrowser doesn't like to be run on a server, as a service. — CodeCaster, Feb 04 '16 at 11:28

score 1 · Accepted Answer · answered Feb 04 '16 at 11:36

1

I am wondering if the document has loaded into the browser at the point that you try and run the script. So, can you try handling the navigation complete event and run the script from there instead.

answered Feb 04 '16 at 11:36

Justin Harvey

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When i am trying to get the WebBrowser source code i get it – YosiFZ Feb 04 '16 at 11:41

C# WebApplication with WebBrowser

1 Answers1