c# - Gecko/Firefox 38 not being recognized as FF on whatsappweb -

im trying create simple app has 1 form on load goes web.whatsapp.com using geckofx 38 (https://bitbucket.org/dherken/geckofx-38.0) , xulrunner 38.0 , browser picked on www.whatsmybrowser.org firefox 38

see here: http://imgur.com/5v5oh6g.png

still whatsapp web doesnt see it, see here: http://i.imgur.com/vyc4oec.png

i got snippet geckofx dev forked geckofx 38 me debugging in c# not know. converted vb.net using tool still not sure how incorporate app.

c# code:

geckopreferences.user["general.useragent.override"] = "mozilla/5.0 (windows nt " + environment.osversion.version.major + "." + environment.osversion.version.minor + "; rv:38.0) gecko/20100101 firefox/38.0"; geckopreferences.user["extensions.blocklist.enabled"] = false; geckopreferences.user["media.navigator.enabled"] = true; geckopreferences.user["media.navigator.permission.disabled"] = true;

converted vb.net code:

geckopreferences.user("general.useragent.override") = ("mozilla/5.0 (windows nt " + environment.osversion.version.major & ".") + environment.osversion.version.minor & "; rv:38.0) gecko/20100101 firefox/38.0" geckopreferences.user("extensions.blocklist.enabled") = false geckopreferences.user("media.navigator.enabled") = true geckopreferences.user("media.navigator.permission.disabled") = true

how ever didnt tell me import , pasting @ top of form sends declaration errors...if dim end of statement expected errors.

this current code:

public class form1  private sub form1_load(sender object, e eventargs) handles mybase.load     geckowebbrowser1.navigate("https://www.web.whatsapp.com") end sub 

end class

i love have working appreciated.