Web Browser control window.external always returns exception

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I am using web browser control for one of my application.
I need the javascript function in the document to call a function in the application through objectforscripting.

I have set the object for scripting like this
webBrowser1.ObjectForScripting = this;

and I am using a function like this

C#

public void getData()
       {
lbl.Text="Something";

       }

I am calling the function like this

XML

<script type="text/javascript">
function callFunc(){window.external.getData();}
</script>

I am always getting the error "Unable to get property 'getData' of undefined or null reference".

Do u guys know any solution for this. ??

Posted 31-May-14 7:29am

Prasaad SJ

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Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 31-May-14 15:34pm

Where you set the ObjectForScrpting?

1 solution

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netfed · Accepted Answer · 2014-05-31T19:51:00

Solution 1

Principally and first of all:

1) you can't test for or invoke a function before the Object is rendered on the page, so you will have to interact With the Control after the page is drawn in the browser (See jquery document.ready() for example)
2) It sounds very, very strange to put a webbrowser Control onto a web page

If it is in a winforms Application, you have the following option:

Link to info

or this to bring you further (since the question was very vague:

More info

Posted 31-May-14 19:51pm

netfed

Updated 31-May-14 19:55pm

v3

Comments

Prasaad SJ 1-Jun-14 22:41pm

Hi.. Thanks for the reply. I am using the WebBrowser control on a windows application. I figured out later that I am using "webBrowser1.ObjectForScripting = Form.ActiveForm;" under the document_completed event. "webBrowser1.ObjectForScripting=this" under Form load event gives me the correct solution. Thank you guys.. :)